JP3149437B2 - Biofeedback device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a biofeedback device.

[Related Art] Conventionally, meditation using zazen or the like has been performed, and in various mental states such as mental unification, mental stability, selflessness, and relaxation, the generation of brain waves showing a waveform called an alpha wave from the cerebral neocortex. It has become known to accompany.
In the state of generating an alpha wave, the action of the autonomic nervous system becomes active, for example, the respiratory rate of 15 times per minute usually further decreases, the pulse becomes extremely slow, the blood pressure stabilizes at a low value,
It is well known that there is a clear change in biological activity such as an increase in blood flow. As a result, it is said that not only is it effective in relieving fatigue and relieving stress, but also through the training of meditation, expression of creativity, appropriate judgment, etc. are acquired. A biofeedback device is known as a tool for measuring mental stability as described above.
This device directly detects an alpha wave, or detects a change in biological information such as skin resistance that appears in response to an alpha wave being generated by the brain. For example, a sensor that detects a change in skin resistance at the fingertip or the like is fixed with an adhesive tape or the like, and when a change in skin resistance corresponding to alpha wave generation is detected, a buzzer sound is generated or the light emitting element is turned on Then, it is notified that an alpha wave is generated. Then, by repeatedly acquiring the mental state at the time of the notification and the process leading to the notification, the next mental stability can be easily executed.

[Problems of the prior art] In recent years, there have been many attempts to actively improve the mental state to a state where an alpha wave is generated, to maintain health and improve mental health, and to use it in daily life. I have. For this purpose, it is necessary to use the above-described biofeedback device and the like to repeat training for further stabilizing the mind while observing the progress of the mental state to a stable state. In a busy modern society, there is a demand that the above mental unification training can be easily executed even during a break or while traveling on a vehicle. However, the conventional biofeedback device has a problem that the device is large and cannot be carried, is extremely expensive, and cannot be easily used in a short time in a place where the user is going.

Further, there has been a problem that the degree of progress of the training is unknown only by the notification by the buzzer sound or the light emission, and the dissatisfaction remains.

[Object of the Invention] It is an object of the present invention to provide a biofeedback device which is a small device which is always portable, is inexpensive, and which allows the progress of training to be understood.

[Summary of the Invention] In order to achieve the above object, the present invention provides a function of continuously measuring blood pressure data and pulse data, a function of comparing the measured data with preset target data and displaying a result. The main point is that the degree of progress of training by biofeedback can be quickly and easily displayed even in a small device by incorporating the device into a small device that is always portable.

Example Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is an external view of an electronic wristwatch according to one embodiment of the present invention.

In FIG. 1, a watch case 1 has an LCD (liquid crystal display) 2 and its LCD
Is provided, and the watch glass 3 is fixed to the watch case 1 by a packing 4.

On the left side of the watch case 1, three push-button switches S1, S2, and S3 are provided, and below the LCD 2, two push-button switches S4, S5 are also provided. .

On the right side of the watch case 1 is provided a blood pressure detecting device 7 comprising a detecting unit 6 for detecting blood pressure from the inserted fingertip and a pump chamber 5 for injecting pressurized air into the detecting unit 6.

A band 7 is attached to the watch case 1, so that the watch case 1 can be attached and fixed to a wrist or the like.

FIG. 2 is a block diagram showing an internal circuit of the wristwatch shown in FIG.

In FIG. 2, a ROM 11 is a fixed memory containing a microprogram for controlling the system and data such as numerical values for various operations. Key input section
The switch 12 includes the switches S1, S2,..., And S5 described with reference to FIG. The control unit 13 includes a CPU such as a microprocessor, and controls the entire system based on a microprogram stored in the ROM 11. Control unit
Reference numeral 13 denotes a driving unit which outputs an operation signal a when the input signal from the key input unit 12 is a signal for instructing measurement of blood pressure.
Start 14 When the drive unit 14 receives the operation signal a from the control unit 13, the drive unit 14 drives the pump chamber 5 shown in FIG.

The detection unit 6 includes a fingertip insertion unit, a pressure-reducing / developing body which is provided inside the fingertip insertion unit, and which is formed of a synthetic rubber film (not shown) surrounding the inserted fingertip, and a light emitting diode which irradiates light toward the inserted fingertip. , Comprising a phototransistor and the like that detects the light that is irradiated and reflected inside the fingertip,
The control unit 13 detects the systolic blood pressure and the diastolic blood pressure by detecting the pulsating flow of the blood that stops or passes in accordance with the pressurizing and depressurizing of the pressurizing and depressurizing body of the inserted fingertip blood vessel, and detects the detected blood pressure data.
Output to

The control unit 13 compares the blood pressure data set in the RAM (random access memory) 15 in advance with the key input from the key input unit 12 and the blood pressure data input from the detection unit 6 as described later. In response to the comparison result, the operation signal b is output to drive the sounding unit 16 to sound a buzzer sound.

Further, the control unit 13 is connected to the transmitter 18 via the frequency division timing unit 17. The oscillator 18 generates a clock signal having a constant cycle and outputs the clock signal to the frequency division timing unit 17. The frequency division timing unit 17 includes a frequency division circuit and a timing generator, and outputs a clock signal and a timing signal for controlling each unit in time series to the control unit 13.

Further, the control unit 13 is also connected to the display unit 20 via the decoder / driver unit 19, and outputs various display data to the decoder / driver unit 19. The decoder / driver unit 19 decodes the display data input from the control unit 13 to create a display drive signal, and outputs the display drive signal to the display unit 20.
The display unit 20 includes the LCD 2 described in FIG. 1, and performs a predetermined display based on the display drive signal input from the decoder / driver unit 19.

FIG. 5 is a main internal configuration diagram of the RAM 15. The function of each register shown in FIG.

A display register 21 stores display data to be displayed on the LCD 2 of the display unit 20.

Current time register 22: Stores the current time generated based on the signal output from the frequency division timing section 17.

Register M is a flag register corresponding to the three basic display modes, and stores "0" in the basic clock mode, "1" in the blood pressure measurement mode, and "2" in the bio measurement mode.

Register F... M = 2 (the value of register M is “2”)
In the bio measurement display mode, “0” is stored in the bio display mode, “1” is stored in the bio measurement mode, and “2” is stored in the measurement data recall mode.

 Register G: "1" is stored during blood pressure measurement.

Register S0: Stores systolic blood pressure data during measurement.

Register D0: Stores diastolic blood pressure data during measurement.

Register S1: Stores the set systolic blood pressure data.

Register D1: Stores the set diastolic blood pressure data.

Register P... Is an address pointer of a register Lj to be described later for storing the measured blood pressure data.

 Register C: 10-second timer.

Register Lj (j = 1 to 30) ... consisting of 30 registers, each of which is composed of register sections S and D. Register section S stores measured systolic blood pressure data, and register section D measures The stored diastolic blood pressure data is stored.

In the above configuration, first, the switch shown in FIG.
The switching of the display mode set by S1 to S3 will be described.

As shown in FIG. 6, the value of the register M is changed from “0” → “1” → “2” → by the operation of the switch S1 as described later.
In response to the value of the register M, the basic clock mode indicated by MD10, the blood pressure measurement mode indicated by MD20, the biomeasurement mode indicated by MD30, and the biometric mode indicated by MD30 are displayed again. The display switches between the basic clock mode display.

In the display of the basic clock mode, for example, as shown by MD10 in FIG.
“57:23” is displayed on LCD2.

In the display of the blood pressure measurement mode, the MD in FIG.
As shown in 20, `` BP '' indicating that the measurement is blood pressure is LC
Displayed above D2. At the time of this display, when the fingertip of the right hand is inserted into the blood pressure detector 6 shown in FIG. 1, for example, the systolic blood pressure value “145” and the diastolic blood pressure value “80” detected from the fingertip are displayed below the LCD 2. And displayed on the right side of the center.

In the bio-measurement mode shown in MD30 in FIG. 6, the display mode is further switched by key input using switches S2 and S3. When the register F = 0, the bio-display shown in MD31 in FIG. Mode is displayed,
"BF" indicating the bio display mode, a target systolic blood pressure value such as "140" and a diastolic blood pressure value such as "7"
5 ”is displayed. When a key input by the switch S2 is made in the bio display mode, the register F = 1.
The display is switched to the bio-measurement mode display shown by MD32 in the same figure, and a heart-shaped display indicating the bio-measurement mode is displayed. Also in this case, by inserting the fingertip of the right hand into the blood pressure detecting unit 6 shown in FIG. 1, the biological measurement of the maximum and minimum blood pressures (the biological information such as the maximum and minimum blood pressures is measured and the next measurement is performed from the current measurement. In order to improve the biological state at the time of the measurement, measurement for the purpose of feedback to notify the measurement result, hereinafter referred to as bio measurement) is performed, and the measured value every 10 seconds described later is, for example, the systolic blood pressure value “ 14
"0" and the diastolic blood pressure value "75" are sequentially displayed. At this time,
In comparison with the set blood pressure data stored in the register S1 or the register D1 of the RAM 15 in advance, when the value of the bio-measured blood pressure data is equal to or lower than the value of the set blood pressure data, the sounding unit 16 is driven. A buzzer sounds to inform the user that the results are improving.

The bio-measurement of the blood pressure is performed every 10 seconds, the measurement is performed 30 times every 10 seconds, the bio-measurement is completed, and the display returns to the bio-display mode shown in FIG.

Next, at the time of the display in the bio-display mode, the register F = 2 by the key input of the switch S3, and the display is switched to the measurement data recall mode shown by MD33 in FIG. In this mode, the measured blood pressure data stored in the register Lj of the RAM 15 is sequentially read by a key input of the switch S4, and for example, as shown by MD33 in FIG. together, they indicate that it is stored at the head of the register L ₁ of the register Lj "1", the highest blood pressure value "138" and the diastolic blood pressure value is a measurement which is the stored is "80", is displayed in the LCD2 You. At this time, the displayed systolic blood pressure value and diastolic blood pressure value can be selected and set as a set value (target value) for the next biomeasurement.

Next, the operation of the time and bio measurement processing performed by the control unit 13 in each of the above display modes will be described with reference to the flowcharts of FIGS.

Clock and Blood Pressure Measurement Processing First, processing performed each time a clock signal of a predetermined cycle is output from the frequency division timing unit 17 will be described.

In FIG. 4, in the HALT state of step SA1,
When an input is made from the key input unit 12, the process proceeds to step SA6. On the other hand, when a clock signal is input from the frequency division timing unit 17, the process proceeds to step SA2. In step SA2, a time counting process is performed, and the obtained current time data is stored in the current time register 22 of the RAM 15. And the next step SA3
Then, it is determined whether or not the value of the register G is “1” (hereinafter, described as G = 1). If G = 1, it is determined that the blood pressure is being measured, the process proceeds to step SA4, and after performing a blood pressure measurement process shown in FIG.
Proceeding to SA5, display processing corresponding to the values of the registers M and F shown in FIG. 6 is performed, and the flow returns to step SA1.

In step SA3, if G is not 1, it is determined that the blood pressure is not being measured, and the measurement process is not performed.
Perform SA5 display processing.

By the above operation, when there is no key input in the HALT state, the timing process is performed every time the timing timing comes, and the current time is set.
It is stored in the current time register 22 of the RAM 15. If G = 1, the blood pressure measurement process is performed. If G = 1, the blood pressure measurement process is not performed, and the display mode set on the LCD 2 of the display unit 20 is displayed. Is displayed.

Display Mode Switching Process Next, a description will be given of a process of switching the display mode by operating the switches S1 to S3 shown in FIG. 6, that is, a process of changing the values of the registers M and F by operating the switches.

When there is a key input from the key input unit 12 in the HALT state of step SA1, the control unit 13 proceeds to step SA6 and determines whether the key input is a key input of the switch S1. If the input is the key input of the switch S1, it is determined that the cyclic switching of the three display modes has been instructed as shown in FIG. 6, and the process proceeds to Step SA7 where "1" is added to the register M. Next, the process proceeds to Step SA8, where M = 1
Is determined. If M = 1, it is determined that the mode has been switched from the basic clock mode to the blood pressure measurement mode,
Proceeding to step SA9, after setting G = 1 for performing blood pressure measurement, the process proceeds to the display processing in step SA5.

If M = 1 is not satisfied in step SA8, the process immediately proceeds to step SA5.

According to the above operation, the value of the register M is incremented by “1” (returned to “0” when “1” is added to “2”) for each key input of the switch S1, and based on the value of the register M,
The display mode cyclically switches to the basic clock mode, the blood pressure measurement mode, the bio measurement display mode, and the basic clock mode shown in FIG. In the blood pressure measurement mode of M = 1, “1” is set in the register G. This G = 1
Is determined at the next processing timing of step SA3, and the blood pressure measurement process is executed at step SA4.

If it is determined in step SA6 that the key input is not the key input of the switch S1, the process proceeds to step SA10 to determine whether the key input is the key input of the switch S2. If the key input is the switch S2, the flow advances to step SA11 to determine whether the key input is performed when M = 2 and F = 0. If M = 2 and F = 0, the switch S2 has been operated in the biomeasurement display mode and the biodisplay mode shown in MD31 in FIG. Is switched to the bio-measurement mode shown in MD32. That is, in this case, the process proceeds to step SA12, where "1" is set in the register F to set the bio-measurement mode, the register C is cleared to "0", the 10-second timer is started, and "1" is set and the execution of the blood pressure measurement is set.
Shifts to the display processing of.

In step SA11, if M = 2 and F = 0, the key input of the switch S2 is invalidated, and the process immediately proceeds to step SA5.

By the above operation, in the bio-display mode, if there is a key input of the switch S2, F = 1, the display mode is switched to the bio-measurement mode, and the blood pressure measurement flag G = 1 is set. Register C, which is a 10 second timer, starts. G = 1 is determined at the processing timing subsequent to step SA3, and the blood pressure measurement processing described in detail after step SA4 is executed based on the processing timing of the timer C every 10 seconds. When the mode is not the bio display mode, the key input of the switch S2 is ignored.

Next, in step SA10, when the key input is not the key input of the switch S2, the process proceeds to step SA13,
It is determined whether or not the key input is S3. And the switch
If the key input is S3, the process proceeds to step SA14, where it is determined whether or not the key input is performed when M = 2 and F = 0. Then, M = 2 and F =
If it is 0, the key input of the switch S3 has been made in the bio display mode shown in MD31 in FIG. 6, and the switching to the measurement data recall mode shown in MD33 in FIG. 6 has been instructed. Therefore, in this case, the process proceeds to step SA15, in which the register P, which is an address pointer, is initialized so that the measurement data can be read from the first register L1 of the register Lj. After setting "2" to set the measurement data recall mode, the flow shifts to the display processing in step SA5.

By the above operation, in the bio display mode, if there is a key input of the switch S3, the address pointer P is initialized, and the address is set so that the address can be sequentially specified from the first register L1 of the register Lj by updating the register P described later. You. Further, "2" is set in the register F, and the display is switched to the measurement data recall mode.

In step SA14, if M = 2 and F = 0, the flow advances to step SA17 to determine whether M = 2 and F = 2. If M = 2 and F = 2, it is determined that the key input of the switch S3 has been made in the bio measurement display mode and the measurement data recall mode, and therefore, the mode is switched to the bio display mode. .
That is, in this case, the process proceeds to step SA18, where "0" is set in the register F to set the bio-display mode, and the process proceeds to the display process in step SA5.

If M = 2 and F = 2 in the above step SA17, it is a key input made in step SA14 when M = 2 and not F = 0, and now when M = 2 and F = 2. In this case, the key input by the switch S3 is invalidated, and the process immediately proceeds to step SA5.

By the above operation, the key input of the switch S3 is ignored when the mode is not the bio-display mode shown by MD31 in FIG. 6 or the measurement data recall mode shown by MD33.

Setting of Blood Pressure Data Target Value Next, the setting process of the blood pressure data target value in the display mode of MD31 and MD33 shown in FIG. 6 which is set by key input of the switches S1 and S3 will be described.

When the key input of the switch S4 is detected in step SA19 in the flowchart of FIG. 4, the process proceeds to step SA20. In this case, whether the key input is performed when the display mode is M = 2 and F = 0. Determine whether or not. If M = 2 and F = 0, the flow shifts to step SA22, and it is determined whether or not the key input has been performed when M = 2 and the display mode is F = 2. If M = 2 and F = 2, a key input of the switch S4 is made in the measurement data recall mode shown in MD33 of FIG. 6, that is, the display of the biometric blood pressure value of the next storage order is instructed. Therefore, in this case, the process proceeds to Step SA23, where the value of the address pointer P is updated, and
After specifying the address of the register Lj storing the next bio-measured blood pressure value and reading out the bio-measured blood pressure value,
The process proceeds to the display process at step SA5.

By the above operation, in the measurement data recall mode shown in MD33 of FIG. 6, each time the switch S4 is pressed,
The 30 systolic blood pressure and diastolic blood pressure data stored by the bio-measurement are sequentially read from the head and displayed.

Next, in step SA20, if M = 2 and F = 0, it is determined that the key input of the switch S4 indicates selection of the currently displayed systolic or diastolic blood pressure value,
Proceeding to step SA21, the currently displayed systolic or diastolic blood pressure value is selected. In the above step SA20, M = 2
And if F = 0, step SA as described above
22. At step SA22, M = 2 and F = 2
If not, the key input of the switch S4 is invalidated, and the process immediately proceeds to the step SA5.

With the above operation, in the bio-display mode, the displayed systolic or diastolic blood pressure value can be selected as a target value by key input of the switch S4. When the mode is not the bio-display mode and the measurement data recall mode, the key input of the switch S4 is ignored.

Next, in step SA19, the key input is switched to switch S4.
If the key input is not the key input of the switch S5, it is determined that the key input is the key input of the switch S5.
It is determined whether or not the processing has been performed when 2 and F = 0. If M = 2 and F = 0, it is determined that the current mode is the bio-display mode, and that the target data can be set or corrected by key input of the switch S5. However, in this case, the process proceeds to step SA25 and proceeds to step SA21.
Performs the setting or correction processing of the target data selected in step S5, and if the target data is the systolic blood pressure value, the register S of the RAM 15
If the diastolic blood pressure value is 1, it is stored in the register D1 of the RAM 15.

By the above operation, in the bio-display mode, setting of the target value when the measured value to be selected in step SA21 is not yet stored, or correction / setting of the selected target value, is performed by key input of the switch S5. Can be performed by the instruction of

In step SA24, if M is not 2 and F is not 0, it is determined that a mode other than the bio display mode is set, and the flow advances to step SA26 to perform key input processing using the switch S5 in another mode display. For example, a setting process such as a time and an alarm is performed.

Blood pressure measurement process Next, when the value of the register G is set to "1", the control (b) 13 is executed by step SA4 in FIG.
The details of the blood pressure measurement process will be described with reference to the flowchart of FIG. This blood pressure measurement process is performed by detecting the highest and lowest blood pressure from the right fingertip inserted in the blood pressure detection device 7 provided in the watch case 1 shown in FIG.

In FIG. 5, first, at step SB1, it is determined whether or not M = 1, that is, whether or not the blood pressure measurement mode shown in MD20 of FIG. 6 is set. Proceeds to SB2 to output operation signal a and drive (b) 1
4 and activates the pump chamber 5 to detect the systolic and diastolic blood pressures by the detector 6, and stores the detected and measured maximal and diastolic blood pressure data in the register S0 of the RAM 15 respectively.
And D0. Then, the process proceeds to Step SB3, and G = 0.
To indicate the end of the blood pressure measurement process, return to the main flow of FIG. 4, and proceed to the display process of step SA5.
The measured maximum and minimum blood pressure data are displayed.

By the above operation, in the mode of MD20 in FIG. 6,
The systolic and diastolic blood pressure data detected by the measurement is RAM1
The stored blood pressure data is stored in the registers S0 and D0, and the stored blood pressure data is displayed on the LCD2.

Bio-measurement and sound processing In step SB1, if M = 1 is not set, the process proceeds to step SB4, where M = 2 and F = 1, that is, whether or not the bio-measurement mode shown in MD32 in FIG. Determine. And
If M = 2 and F = 1, proceed to step SB5,
“1” is added to the register C (timer C), and step SB6
Then, it is determined whether or not the timer value has reached 10 seconds.
If not seconds, the process ends, and steps SB1, SB4, SB
Repeat 5 and SB6. Then, when the timer value reaches 10 seconds, the process proceeds to step SB7, where the systolic blood pressure and the diastolic blood pressure data are measured as in the case of the blood pressure measurement mode, and the systolic blood pressure and the diastolic blood pressure data detected by the measurement are respectively
It is stored in the registers S0 and D0 of the RAM 15.

By the above operation, in the bio-measurement mode, the blood pressure data is measured by the blood pressure detection device 7 every 10 seconds.
The systolic blood pressure data and the diastolic blood pressure data detected by the measurement are stored in the registers S0 and D of the RAM 15, respectively.
Stored in 0.

Subsequent to the process of step SB7, the process proceeds to step SB8, where the measured systolic blood pressure data stored in the register S0 is smaller than the set systolic blood pressure data set in the register S1 (the blood pressure value is low), Or determine whether they are equal. In this determination, if the measured systolic blood pressure data stored in the register S0 is smaller than or equal to the set systolic blood pressure data set in the register S1, step SB
Proceeding to 10, the operation signal b is output to notify that the measured value of the blood pressure data was lower or the same as the corresponding set value, the sound (b) 16 was activated, and the buzzer sound was generated. generate.

If the measured systolic blood pressure data is larger than the set systolic blood pressure data (the blood pressure value is high) in step SB8 above,
Proceeding to SB9, it is determined whether the measured diastolic blood pressure data stored in the register D0 is smaller than or equal to the set diastolic blood pressure data set in the register D1. Then, if the measured diastolic blood pressure data is smaller than or equal to the set diastolic blood pressure data, the step in this case is also performed.
Proceed to SB10 to perform the sound processing. In step SB9 above,
If the measured diastolic blood pressure data is larger than the set diastolic blood pressure data, the process immediately proceeds to step SB11 described later.

According to the above operation, if any one of the measured values of the highest and lowest blood pressure data is smaller than or equal to the corresponding set value, a buzzer sound is generated and it is notified that the measurement result is improved.

Following the above, in step SB11, the address pointer P
Is updated, and the address of the register Li (i = j + 1) for sequentially storing the measured highest and lowest blood pressure data stored in the registers S0 and D0, respectively, is set. Li registers S and D
Then, the measured maximum and minimum blood pressure data stored in the registers S0 and D0 are transferred and stored. Next, proceeding to step SB12, it is determined whether or not the blood pressure measurement every 10 seconds is the last in the current measurement processing. This determination processing is performed, for example, when the value of the updated address pointer P is RA
It carried out by determining whether or exceeds the address of the final register L ₃₀ provided in the M. Then, if it is not the final yet, immediately return to the main flow of FIG.
The display processing of 5 is performed, and the above steps SB4 to SB12 are repeated again in the processing of FIG.

In step SB12, if the processing is final, the flow advances to step SB13 to set G = 0 to set the end of the blood pressure measurement processing, and set F = 0 to change from the bio-measurement mode to the bio-display mode. After switching to, the process returns to the main flow.

With the above operation, the register Lj is sequentially designated every 10 seconds until the measurement is completed, and the measurement data is sequentially stored in the designated register Lj.

In this way, in the above embodiment, the bio-measurement process is executed.
A measurement method that produces a feeling of pressure on the fingertip every second is not without danger of impairing mental concentration for training. In such a case, biomeasurement can be performed simply by lightly pressing a fingertip on a predetermined position of the present apparatus. For other embodiments of such a biofeedback apparatus, FIGS. This will be described below with reference to FIG. The same components as those of the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

FIG. 7 is an external view of an electronic wristwatch according to a second embodiment of the present invention.

In FIG. 7, a watch case main body 1 'is made of an electrically non-conductive synthetic resin or the like. On its front,
An LCD (Liquid Crystal Display) 2 and a watch glass 3 covering the LCD 2 are provided slightly toward the 12 o'clock side from the center, and the watch glass 3 is fixed to the watch case main body 1 ′ by a packing 4. Also, on the lower left side of the front of the watch case main body 1 ', an LED (light emitting diode) 10-1, a phototransistor 10-2, and light emitted from the LED 10-1 do not directly enter the phototransistor 10-2. Is buried on the concave surface 10-4, with only the head thereof being exposed to the outside, and a heart radio wave (electrocardiogram R)
(Wave) detection electrode 9-1 is provided. Further, push-button switches S1, S2, S3, S4 and S5 having the same functions as in the first embodiment are provided on the side surface of the watch case main body 1 ', for switching the display mode and for transmitting basic data. An operation such as an input is performed. A band 8 is attached to the watch case body 1 'so that the watch case body 1' can be attached and fixed to a wrist or the like.

FIG. 8 shows a detailed configuration of the display electrodes of the LCD2.
The LCD 2 is largely divided into three display portions, upper, middle, and lower. The upper portion is provided with a dot matrix display portion 2-1 capable of horizontally displaying 5 × 16 dots, and the dot matrix display portion 2-1 is provided. The numbers indicating the systolic blood pressure in six steps are printed from the top downward, 160, 150, ... 110 on the left side, and the numbers indicating the diastolic blood pressure in six steps are displayed on the right side. 100, 90,..., 50 are printed downward from. The middle stage of the LCD 2 is provided with a mode display unit 2-2 for notifying the display mode being executed, a small segment display unit 2-3 for displaying a pulse and the like, and a heart display unit 2-4 for blinking during blood pressure measurement. Have been. A large segment display 2 displays the current time in the clock mode and the highest (or lowest) blood pressure in the sphygmomanometer mode at the bottom of the LCD2.
-5 is provided. This large segment display is 6
Digit segment display, “1” display between the 2nd and 3rd digit segment display from the right, and colon display between the 4th and 5th digit display from the right body,
And A, P display members.

Next, FIGS. 9 and 10 are sectional views parallel to the 12 o'clock and 6 o'clock directions showing the internal structure of the watch case main body 1 '. Ninth
The figure is a cross-sectional view passing through the electrocardiographic detection electrode 9-1, and FIG. 10 is a cross-sectional view passing the vicinity of the partition 10-3 as viewed from the right side in FIG. In FIG. 9, the above-mentioned heart radio wave detection electrode 9-
A conductive electrocardiographic detection electrode constituting a pair of electrodes 1 covers a watch case main body 1 'as a back cover 9-2, and a circuit board 1-2 provided with an electronic circuit (not shown) is formed in a middle layer portion. Are located in The LCD2 is mounted on the circuit board 1-2.
Are connected via an interconnector 1-3. Further, as shown in FIG. 10, the phototransistor 10-2, the heart radio wave detection electrode 9-1 and the back cover 9-2
-3, 9-3...
The LED 10-1 shown in FIG. 7 is similarly electrically connected by a conductive member.

FIG. 11 is a block diagram showing an internal circuit of the wristwatch shown in FIG.

In FIG. 11, a ROM 11 is a fixed memory containing a microprogram for controlling the system and data such as numerical values for various operations. Key input section
The switch 12 includes the switches S1, S2,..., S5 described with reference to FIG. 7, and outputs an operation signal of each key to the control unit 13 '.
The control unit 13 'is composed of a CPU such as a microprocessor, and controls the entire system based on a microprogram stored in the ROM 11. When the input signal from the key input unit 12 is a signal for instructing measurement of blood pressure, the control unit 13 'outputs an operation signal c to activate the heart radio wave detection unit 9 described later and to perform other operations. Operation signal d
Is output to activate the pulse detection unit 10 described later. In addition, a timekeeping process is performed based on a timekeeping timing signal input from a frequency dividing timing unit 17 described later.

The heart radio wave detection unit 9 has the heart radio wave detection electrodes 9-1 and 9-2 (back cover 9-2) described in FIG. 7, and for example, is applied to the heart radio wave detection electrode 9-1. A heart radio wave (electrocardiogram R wave) is detected from the right fingertip and the left wrist in contact with the heart radio wave detection electrode 9-2, and the detected heart radio wave signal is output to the control unit 13 '.

In addition, the pulse detecting unit 10 is provided with the LED 10- described in FIG.
1. It has a phototransistor 10-2 and a partition 10-3, and detects a pulse by detecting a pulse flow of blood at the right fingertip applied to the concave surface 10-4 in which they are buried. The pulse signal is output to the control unit 13 '. This pulsation sensing / detection utilizes the property that hemoglobin in blood absorbs light of a specific wavelength well, that is, light emitted from LED 10-1 is reflected after passing through the skin surface of the fingertip. Before inputting to the phototransistor 10-2, the pulse is detected by utilizing the absorption effect received from the hemoglobin in the blood flow, which causes the light to diminish in inverse proportion to the amount of blood flow flowing through the fingertip. ing. This is because when the pulsating flow passes through the fingertip, the amount of blood flow is large, and the amount of light emitted from the LED 10-1 is greatly absorbed according to the amount of blood flow, so that the reflected light is reduced and the phototransistor 10 The light quantity input to -2 draws a wave that decreases and increases in accordance with the pulse. This input reflected light is reduced by phototransistor
The voltage signal is converted by 10-2 into a voltage signal, and the converted voltage signal is output to the control unit 13 'as the pulse signal. The heart radio wave is an electrical signal that flows instantaneously in the body, reaches the body surface at the same time as the pulsation of the heart that generates the R wave, and is detected by the heart radio wave detection unit 9. The pulse reaches the body surface, that is, the fingertip, and is detected by the pulse detection unit 10 later than the time at which the sent pulsation occurs, due to the resistance caused by the characteristics of the blood vessels and other reasons.

The control unit 13 'detects a time difference (pulse delay time) between the heart wave signal input from the heart wave detection unit 9 and the pulse signal input from the pulse detection unit 10 based on the heart wave signal. The blood pressure data is calculated based on the delay time data and the preset reference data, and the calculated blood pressure data is output to the decoder / driver unit 19.

The decoder / driver section 19 decodes the data input from the control section 13 ′ or data to be displayed such as time data, creates a display drive signal, and outputs it to the display section 20. The display unit 20 includes the LCD 2 described in FIG.
A predetermined display is performed based on the display drive signal input from the decoder / driver unit 19.

The oscillator 18 generates a clock signal having a constant cycle and outputs the clock signal to the frequency division timing unit 17. The frequency division timing unit 17 includes a frequency division circuit and a timing generator, and outputs a clock signal and a timing signal for controlling each unit in time series to the control unit 13 '. The RAM 15 'is a random access memory, and as shown in FIG.
Each register is configured to store predetermined data. The sounding unit 16 emits a buzzer sound to perform notification of switch operation confirmation and the like.

FIG. 12 is a main internal configuration diagram of the RAM 15 '.
The data stored in each register shown in FIG.

A display register 21 stores display data to be displayed on the LCD 2 of the display unit 20.

Current time register 22... Stores the current time counted based on the clock signal output from the frequency division timing section 17.

Register M: "0", "1", "2" corresponding to the three basic display modes (clock mode, blood pressure measurement mode, biofeedback mode) shown in FIG.
Is a register that stores the value of.

Register F... M = 1 (the value of register M is “1”)
In the blood pressure measurement mode, “0” is set in the normal measurement mode shown in FIG. 16 described later, and “1” is set in the rest measurement mode.
Is stored in the measurement mode immediately after exercise, and “0” is stored in the bioselection mode shown in FIG.
This register stores “2” in the bio measurement display mode.

Register G: A register for storing “1” during bio measurement.

Register J is a register for storing a value for selecting a set digit.

Register TTR: Stores the time difference data at rest.

 Register PR: stores pulse data at rest.

Register SR: Stores systolic blood pressure data at rest.

Register DR: Stores diastolic blood pressure data at rest.

Register TTE: Stores time difference data immediately after exercise.

 Register PE: stores pulse data immediately after exercise.

Register SE: Stores systolic blood pressure data immediately after exercise.

Register DE: stores the diastolic blood pressure data immediately after exercise.

Register MTT: Stores time difference data during measurement.

 Register MP: stores pulse data during measurement.

Register MS: Stores systolic blood pressure data during measurement.

Register MD: stores diastolic blood pressure data during measurement.

Register TS: The set systolic blood pressure data is stored.

Register TD: Stores the set diastolic blood pressure data.

 Register TP: Stores the set pulse data.

Register P: an address pointer for specifying a register Kj described later.

 Register C: 10-second timer.

Register Q: Stores a value for designating a target of bio measurement (one of systolic blood pressure, diastolic blood pressure, or pulse).

Registers Kj (j = 0, 1,... N) are composed of a large number of registers K0 to Kn, each of which is composed of a register section KS, KD, KP. The high blood pressure data is stored, the register unit KD stores the measured diastolic blood pressure data, and the register unit KP stores the measured pulse data.

Register L0: Stores two constants indicating the relationship between the systolic blood pressure and the pulse wave conduction velocity, which will be described later.

A register L1 stores two constants indicating the relationship between the diastolic blood pressure, the pulse wave conduction velocity, and the pulse, which will be described later.

In the above configuration, first, the switch shown in FIG.
The switching of the display mode set by S1 to S4 will be described.

As shown in FIG. 16, the value of the register M is changed from “0” → “1” → “2” → by the operation of the switch S1 as described later.
In response to the value of the register M, the display switches to the clock mode indicated by MD10, the blood pressure measurement mode indicated by MD20, the biofeedback mode indicated by MD30, and the clock again in accordance with the value of the register M. The display of the mode switches.

In the display of the clock mode, for example, the MD shown in FIG.
As shown in 10, the current time "Sunday, January 6, 1991, 10:57
"23 seconds" is displayed on LCD2.

When the register M = 1 and the blood pressure measurement mode indicated by MD20 in FIG. 16 is set, the other switches S2 to S4
The value of the register F is changed by the key input by, and the display mode is further switched. That is, the above M =
The blood pressure measurement mode 1 is set, and when the register F = 0, the normal measurement mode is set. In this normal measurement mode, the notification display of “OK!” Is displayed on the LCD2 as shown on MD21 in FIG.
Is displayed on the dot matrix display section 2-1. In the mode display section 2-2, an underbar display is displayed on the display section of "BP" to indicate that the normal measurement mode is set. The displayed “P” is displayed, and the “−−” display by the small segment display 2-3 and the heart display 2-4 blink at the display position where the pulse is to be measured and displayed. At the time of this display, the fingertip of the index finger of the right hand is applied to the pulse detection unit including the middle finger of the right hand, the LED 10-1, the phototransistor 10-2, and the partition 10-3 to the heart radio wave detection electrode 9-1 shown in FIG. By pressing, the blood pressure is calculated from the heart radio wave and the pulse detected from the fingertip by a calculation described later. As a result, for example, as shown in MD22 in FIG. The systolic blood pressure 122 and the diastolic blood pressure 70 "are displayed, and after a certain period of time, the display returns to the MD21 display.

The register M = 1 and the register F =
When the key input of the switch S2 is performed while the display mode set to “0” is being displayed, the value of the register F is switched to “2” and the display of the resting measurement mode indicated by MD23 in FIG. Switch to. In the rest measurement mode, the display of “OK!” Of the MD 21 is switched to the display of “REST” indicating the rest. In the rest measurement mode, various data such as the highest and lowest blood pressure at rest are input or measured, which will be described later.

Also, when the display indicated by MD21 in the figure is being performed,
When the key input of the switch S3 is performed, the value of the register F is switched to “3”, and the display is switched to the display of the measurement mode immediately after exercise shown by MD24 in FIG. In this measurement mode immediately after exercise,
The display of “OK!” Shown on MD21 in the above bio measurement mode is
The display switches to, for example, “EXER” (abbreviation of EXERCISE) indicating immediately after exercise. Also in this case, it is possible to input and measure various data immediately after the exercise, which will be described later in detail.

Next, when the display of the biofeedback mode shown in FIG. MD30 is performed corresponding to M = 2, the value of the register F is changed from “0” to “1” each time a key is input by the switch S2. The display is switched to "0", and when the register F = 1, the display of the bio display mode shown by MD32 in FIG. In the case of key input by the switch S3, the value of the register F switches from "0" → "2" → "0". When the register F = 2, the value of MD33 in FIG.
Is displayed in the bio display mode shown in FIG.

Next, in each of the display modes described above, the operation of the time, blood pressure data and pulse data displayed under the control of the control unit 13 ′, and the measurement processing and the input data storage processing for the display will be described with reference to FIGS. This will be described with reference to the flowchart shown in FIG.

FIG. 13 is a flowchart showing the flow of the entire program.

Timekeeping and Measurement Processing First, processing performed each time a clock signal of a predetermined cycle is output from the frequency division timing unit 17 will be described.

In FIG. 13, in the HALT state of step SC1,
When an input is made from the key input unit 12, the process proceeds to step SC6. On the other hand, when a clock signal is input from the frequency division timing unit 17, the process proceeds to step SC2. In step SC2, a time counting process is performed, and the obtained current time data is stored in the current time register 22 of the RAM 15 '. And the next step SC
At 3, it is determined whether or not the value of the register G is "1" (hereinafter, described as G = 1). If G = 1, it is determined that the blood pressure measurement (including the pulse measurement) is in progress, and the flow advances to step SC4 to execute a measurement process described later. Then, the flow advances to step SC5 to check the register shown in FIG. A display process according to the values of M and F is performed, and the process returns to step SC1.

In step SC3, G = 0 unless G = 1. In this case, since the blood pressure measurement is not being performed, the measurement process is not performed, and the process immediately proceeds to the display process in step SC5.

By the above operation, when the timing reaches the timing, the time is measured and the updated current time is stored in the current time register 22 of the RAM 15 '.
When G = 1, a blood pressure data measurement process, which will be described later in detail with reference to FIG. 14, is executed. When G = 0, the measurement process is not performed.

Display Mode Switching Process Next, the display mode switching process by operating the switches S1 to S4 shown in FIG. 16, that is, the process of changing the values of the registers M and F by operating the switches will be described.

In the HALT state of step SC1, when there is a key input from the key input unit 12, the control unit 13 'proceeds to step SC6, and determines whether or not the key input is a key input of the switch S1. When the key input of the switch S1 is performed, the display mode is switched between the clock mode, the blood pressure measurement mode, the biofeedback mode, and the clock mode again as shown in FIG. Therefore, in this case, the process proceeds to step SC7, where "1" is added to the value of the register M to switch to the next mode. Then, the process proceeds to step SC8, where the value of the register M is "1" (hereinafter, referred to as "SC1").
M is described as 1). M = 1
If so, the mode has been switched from the clock mode to the blood pressure measurement mode. In this case, the process proceeds to step SC9, where F =
Set to 0, set the normal measurement mode indicated by MD21 in FIG. 16 among the display modes of the blood pressure measurement mode, and further set G = 1 to measure the blood pressure data. Proceed to display processing.

When the mode is switched from the clock mode to the blood pressure measurement mode by the above operation, M = 1 and F = 0, and MD21 in FIG.
Is displayed in the normal measurement mode shown in FIG. Further, since G = 1, a measurement process described later in step SC4 is executed.

In step SC8, if M is not 1, step SC1
Proceeding to 0, it is determined whether or not M = 2. And M
If = 2, the mode has been switched from the blood pressure measurement mode to the biofeedback mode. In this case, the process proceeds to step SC11, where F = 0 is set, and the MD 31 in FIG. 16 of the biofeedback mode is set. After setting the bio selection mode shown, the process proceeds to the display process in step SC5.

When the mode is switched from the blood pressure measurement mode to the biofeedback mode by the above operation, M = 2 and F = 0, and the display of the bioselection mode shown by MD31 in FIG. 16 is made.

In step SC10, if M is not 2, M = 0.
That is, the mode is switched from the biofeedback mode to the clock mode. However, in this case, the process immediately proceeds to the display process of step SC5.

When the mode is switched from the biofeedback mode to the clock mode by the above operation, M = 0 is specified in FIG.
The clock mode display shown in MD10 is displayed.

Next, in step SC6, when the key input is not the key input of the switch S1, the process proceeds to step SC12,
It is determined whether or not the key input is S2. And the switch
If the key input is S2, the flow advances to step SC13 to determine whether the key input is made in the display mode of M = 1. If M = 1, the process proceeds to step SC14, where it is further determined whether or not F = 0, and if F = 0, the blood pressure measurement mode shown in FIG.
It is the normal measurement mode shown in MD21, that is, it is determined that the switching from the normal measurement mode to the resting measurement mode is instructed by the above key input, and the process proceeds to step SC15 where F = 1 is set to set the resting measurement mode. Then, after setting G = 1 to execute the measurement of the blood pressure data, the process proceeds to the display process of step SC5.

If F = 0 in step SC14, the flow advances to step SC16 to determine whether or not F = 1. If F = 1, M = 1 and F = 1 in FIG. It is determined that the key input of the switch S2 is an instruction to switch from the measurement mode at rest to the normal measurement mode, and the process proceeds to step SC16, where F =
After setting to 0 to switch to the normal measurement mode and setting to G = 0 to cancel the measurement execution, the process proceeds to the display processing in step SC5. If F = 1 is not set in step SC16,
It is determined that the key input of the switch S2 is invalid, and the process immediately proceeds to step SC5.

By the above operation, when the key input of the switch S2 is performed in the blood pressure measurement mode, the normal measurement mode shown in MD21 in FIG. 16 and the rest measurement mode shown in MD23 in FIG. 16 are alternately switched. . In the rest measurement mode, G
Since = 1, a blood pressure data measurement process described later in step SC4 is performed. In the blood pressure measurement mode, when neither the normal measurement mode nor the resting measurement mode is performed, the key input of the switch S2 is ignored.

Next, if M = 1 is not set in step SC13, the process proceeds to step SC18 to determine whether or not the key input of the switch S2 is performed when M = 2. If M = 2, the process proceeds to step SC19, where it is further determined whether or not F = 0. If F = 0, the biofeedback mode is indicated by MD31 in FIG. It is the bio selection mode, and it is determined that the switching from the bio selection mode to the bio setting mode indicated by MD32 has been instructed. The process proceeds to step SC20, where F = 1 is set, and the bio setting mode is set. Proceed to the display processing of.

Unless F = 0 in step SC19, step SC21
To determine whether or not F = 1. And F = 1
If so, it is determined that the bio setting mode of the MD 32 corresponds to M = 2 and F = 1, and that switching from the bio setting mode to the bio selection mode has been instructed. However, in this case, the process proceeds to step SC22, where F = 0 is set to switch to the bio selection mode, and then the display process proceeds to step SC5. If F = 1 is not set in step SC21,
It is determined that the key input of the switch S2 is invalid, and the process immediately proceeds to step SC5.

By the above operation, when the key input of the switch S2 is performed in the biofeedback mode, the operation shown in FIG. 16 is performed.
The bio selection mode shown by MD31 and the bio setting mode shown by MD32 in FIG. When the mode is not the bio selection mode or the bio setting mode, the switch S2
Is ignored.

If it is not M = 2 in step SC18, the process immediately proceeds to step SC5.

By the above operation, the key input of the switch S2 is ignored even in neither the blood pressure measurement mode nor the biofeedback mode.

If it is determined in step SC12 that the key input is not the key input of the switch S2, the process proceeds to step SC23 to determine whether the key input is the key input of the switch S3. If it is the key input of the switch S3, the process proceeds to step SC24 to determine whether or not the key input is made in the display mode of M = 1. If M = 1, it is determined that the blood pressure measurement mode is set, and that the key input of the switch S3 has instructed to switch between the normal measurement mode MD21 shown in FIG. 16 and the immediately after exercise measurement mode MD24 shown in FIG. Then, the process proceeds to Step SC25. In step SC25, if F = 0, set F = 2, switch from the normal measurement mode to the measurement mode immediately after exercise, and set G = 1, and set F =
If it is 2, F = 0 is reversed, the measurement mode is switched from the measurement mode immediately after exercise to the normal measurement mode, and G = 0.

By the above operation, when the key input of the switch S3 is performed in the blood pressure measurement mode, the normal measurement mode shown by MD21 in FIG. 16 and the measurement mode immediately after exercise shown by MD24 in FIG. 16 are alternately switched. In the measurement mode immediately after exercise, G
= 1, and the blood pressure data measurement process of step SC4 is executed later.

If M is not 1 in step SC24, the flow advances to step SC26 to determine whether or not the key input of the switch S3 is made in the display mode in which M = 1 and F = 0. Then, if M = 1 and F = 0, MD31 in FIG. 16 in the biofeedback mode
Therefore, it is determined that the switch to the bio measurement display mode has been instructed by the key input. However, in this case, the process proceeds to step SC27 to set F = 2 to set the bio-measurement display mode, and further to set G = 1 to execute the bio-measurement of blood pressure data, and then proceeds to step SC5. I do.
If M is not 2 and F is not 0 in step SC26, it is determined that the key input of the switch S3 is invalid, and the process immediately proceeds to step SC5.

By the above operation, when the key input of the switch S3 is performed in the biofeedback mode, the operation shown in FIG. 16 is performed.
The bio selection mode shown by MD31 and the bio measurement display mode shown by MD33 in FIG. When the mode is not the bio selection mode, the key input of the switch S3 is ignored. Further, even when the mode is not the blood pressure measurement mode or the biofeedback mode, the key input of the switch S3 is ignored.

Input of Blood Pressure Data In this embodiment, the systolic blood pressure value and the diastolic blood pressure value are bio-measured (measured). However, these blood pressure values may be obtained by actually measuring the blood pressure. And obtained from the following algorithm. That is, the seventeenth
FIG. 7A is a perspective view showing characteristics of systolic blood pressure values expressed by taking blood pressure values (blood pressure data) in the vertical direction and pulse wave conduction velocities (time difference data) in the horizontal direction. The hatched line A indicates a point 17-1 indicated by the systolic blood pressure value SE measured immediately after exercise and the pulse wave conduction velocity TTE at the time of measuring the systolic blood pressure, the systolic blood pressure value SR measured at rest and the systolic blood pressure measurement Pulse wave conduction velocity TT
It is obtained by connecting R and the point 17-2 indicated by R. The same person measures the systolic blood pressure and pulse wave conduction velocity in another state (other than at rest or immediately after exercise), and shows the points indicated by the measured systolic blood pressure and pulse wave conduction velocity (FIG. a) As described above, it is known that all these points converge near the oblique line A. Therefore, first, as described above, the systolic blood pressure value at rest and immediately after exercise and the pulse wave conduction velocity are measured and the constant of the above-mentioned oblique line A is recorded. Thereafter, only the conduction velocity MTT is measured. Is obtained by calculation. For example, if the measured conduction velocity is MT
If it is T, the corresponding blood pressure value MS can be obtained from the point 17-3 on the oblique line A, and this value is the systolic blood pressure value at that time.

The oblique line A can be expressed by a linear expression y = ax + b (a and b are constants), and the constants a and b are the maximum blood pressure values during exercise and at rest measured by another accurate blood pressure monitor. After measuring the pulse wave conduction velocity (time difference data) obtained from the pulse and the heart radio wave at the time of measuring the systolic blood pressure, for example, by operating a switch S5 key described later, the control unit 1
3 'and are stored in two areas in the register L0 of the RAM 15'. After this input and measurement, the pulse wave conduction velocity MTT is simply measured, and this MTT is substituted for x in the above-mentioned linear expression to calculate y, that is, the systolic blood pressure value MS is obtained. be able to.

Next, the diagonal line B shown in FIG. 17 (b) indicates the lowest blood pressure value in the vertical direction and the value indicated by the pulse wave conduction velocity × pulse data (pulse rate per minute) in the horizontal direction. It is a perspective view which shows the characteristic of a blood-pressure value. This oblique line B is a point 17-4 indicated by a diastolic blood pressure value DR measured at rest and a value TTR × PR obtained by integrating the pulse wave conduction velocity and pulse data at the time of measuring the diastolic blood pressure.
And a value TTE obtained by integrating the diastolic blood pressure value DE measured immediately after exercise and the pulse wave conduction velocity and pulse data at the time of measuring the diastolic blood pressure.
It is obtained by connecting points 17-5 indicated by × PE. As in the case of systolic blood pressure, the same person measures the diastolic blood pressure in another state, and points indicated by the measured diastolic blood pressure and the pulse and pulse wave conduction velocity at that time are described on the same figure (b). Then, it is known that all these points converge near the oblique line B. Therefore, first measure and input the diastolic blood pressure at rest and immediately after exercise as described above using another accurate sphygmomanometer, and also measure the pulse and pulse wave conduction velocity at the time of measuring the diastolic blood pressure. If the primary equation indicating the oblique line B indicating the above characteristics is recorded, then only the pulse and the heart radio wave are measured, and the pulse wave conduction velocity MTT and the pulse MP obtained from the measurement of the pulse and the heart radio wave are integrated. From the value MTT × MP, the corresponding point 17-6 on the oblique line B can be obtained, and the corresponding diastolic blood pressure value MD can be obtained from the point 17-6 on the oblique line B.

Incidentally, the oblique line B is also a linear expression y = mx + n (m, n
Are constants, and the constants m and n are determined by operating the switch S5 based on the input of the diastolic blood pressure value and the pulse wave conduction velocity obtained from the pulse and the heart wave measured at the time of measuring the diastolic blood pressure. Is calculated by the control unit 13 ', and RAM1
It is stored in two areas in the 5 'register L1. Then, the value MTT obtained by integrating the pulse wave conduction velocity and the pulse is
By substituting × MP for x in the above-described linear expression and performing calculation,
y, that is, the minimum blood pressure value MD can be calculated and obtained.

Next, input of blood pressure data measured by the accurate blood pressure monitor performed by the control unit 13 'in the present embodiment will be described.

In step SA28 of the flowchart of FIG. 13, when the key operation of the switch S4 is detected, the process proceeds to step SA29. If M = 1 in step SA29, the process proceeds to step SA28.
Proceeding to 30, it is determined whether or not F = 1 or 2. If F = 1 or 2, the key input of the switch S4 is performed in the measurement mode at rest or immediately after exercise in the blood pressure measurement mode of the MD20 in FIG. It is determined that digit selection for data input / setting has been instructed. However, in this case, the process proceeds to step SA31, where the measurement and the digit selection process of the input data are performed, and then the process proceeds to the display process of step SC5.

By the above operation, when the measurement mode is the rest measurement mode or the measurement mode immediately after exercise shown in FIG. 16, it is possible to select a digit for inputting measured blood pressure data or the like by key input of the switch S4. Although not particularly shown, the digit selection processing is performed sequentially based on the value of the register J by adding "1" to the value of the register J sequentially from "0" by a key input of the switch S4. That is, J = 0 indicates that the heart radio wave and the pulse are being measured at the time of measuring the systolic blood pressure at rest or immediately after exercise. If the S4 key is operated at this time, G = 0 is set and the measurement is completed. The indicated flag is set, and "1" is added to the register J, and digit selection processing for data input / setting is performed. In this digit selection process, since J = 1 in the first case, the digit of the systolic blood pressure is selected, and the digit of the systolic blood pressure as shown by R or S in FIG.
“0” or “157”) is displayed blinking. In the next operation of the switch S4 key, "1" is added to J = 2, digit selection processing for input / setting of diastolic blood pressure data is designated, and in the next "1" addition, J = 3, and the pulse is increased. Digit selection processing for data input / setting is specified. Here, when the key input of the switch S4 is further performed, the input of the measured blood pressure data ends. The data setting for the selected digit is performed by a setting process of the switch S5 for the selected digit, which will be described later.

If F = 1 or 2 is not satisfied in step SC30,
The process immediately proceeds to step SC5.

That is, in the blood pressure measurement mode, the key input of the switch S4 is ignored unless the measurement mode at rest of the MD23 in FIG. 16 or the measurement mode immediately after exercise shown in the MD24 is not used.

Next, a process of selecting and setting target data for executing biometric measurement will be described.

In step SC29, if M is not 1, step SC
Proceeding to 32, it is determined whether or not the key input of the switch S4 is M = 2, that is, whether the key input has been made in the biorecall mode. If M = 2, the process proceeds to step SC34, and it is determined whether or not the key input is made at F = 0. If F = 0, the key input of the switch S4 has been made in the bioselection mode indicated by MD31 in the biorecall mode of MD30 in FIG. It is determined that the digit selection of has been instructed. However, in this case, the process proceeds to step SC35, in which the digit of the target data of the bio measurement is selected by sequentially adding “1” to the register Q, and the process proceeds to the display process of step SC5.

By the above operation, in the bio selection mode shown in FIG. 16, the digit of the data to be subjected to bio measurement can be selected by key input of the switch S4. This digit selection process is performed sequentially based on the value of the register Q by adding "1" to the value of the register Q sequentially from "0" by the key input of the switch S4. That is, when Q = 1, the digit of the systolic blood pressure is selected, and the digit (130) of the systolic blood pressure blinks as shown by MD31 in FIG. In addition, switch S
If 4 is input by key, "1" is added and Q = 2
And the digit of the diastolic blood pressure is selected, and the next "1"
In the addition, Q = 3, and the digit of the pulse data is selected and designated. The setting of the target data in the digit selected here is performed by key input of the switch S4 performed after the mode change by the switch S2 (F = 1 inversion processing in step SC20).

That is, in step SC34, if F is not 0, the process proceeds to step SC36, where it is determined whether or not F = 1. If F = 1, the bio setting mode shown in MD32 in FIG. 16 is used. Then, the process proceeds to step SC37 to perform a process for setting the target data to the digit selected in step SC35. The target data is set in a work area (not shown) of the RAM 15 'or, for example, in a register K of the RAM 15'.
Among the specific registers of j, for example, the register units KS, KD, and KP of the register Ko, which are set by a switch S5 described later in the register unit corresponding to the selected digit.

By the above operation, when the bio setting mode in FIG. 16 is set, the target value of the target data of the bio measurement can be set by the key input of the switch S4.

If F = 1 is not set in step SC36, the process immediately proceeds to step SC5.

By the above operation, in the biofeedback mode, the key input of the switch S4 is ignored unless the bioselection mode is indicated by MD31 in FIG. 16 or the biosetting mode is indicated by MD32.

Next, in step SA28, if the key input is not the key input of the switch S4, it is determined that the key input is the key input of the switch S5, and the flow advances to step SA33 to perform the S5 key processing. For example, in the bio setting mode where M = 2 and F = 1, the setting process for the selected digit is performed. In this setting process, the data whose digits are selected in step SC36 and which can be set in step SC37 are set. Also, at the end of the processing, the data measured and selected in step SC31 and input are also changed by the switch S5 to the registers SR,
Stored in DR, PR or in registers SE, DE, PE. Further, the constants are stored in the registers L0 and L1 by the calculation as described above.

By the above operation, it is a rest measurement mode or a post-exercise measurement mode of the blood pressure measurement mode shown in FIG. 16, and
When the input digit selection process of the input data is performed by the switch S4, the data setting process for the selected digit is performed by the key input of the switch S5. Also, MD32
In the bio setting mode shown in FIG. 7 and the setting of the target data to the digit selected by the switch S4 is possible, the data setting process to the selected digit is performed by the key input of the switch S5.

Details of Blood Pressure Data Measurement Process When the value of register G is set to “1” by operating switches S1 to S5, G = 1 is determined in step SC3 in FIG. 13, and the blood pressure data measurement process is performed. Be executed.
On the other hand, when G = 0, display processing is executed. The blood pressure data measurement process is to measure the highest and lowest blood pressure data by measuring the heart radio wave and the pulse, the above-mentioned highest at rest and immediately after exercise, blood pressure data at the time of inputting the lowest blood pressure data, MD22 in Fig. 16 using the input data
The blood pressure data at the time of execution of the measurement in the normal measurement mode shown in FIG. 6 or the blood pressure data measurement process in the bio measurement display mode shown in MD33 in FIG. 16 using similarly input data is performed.

Here, the blood pressure data measurement processing in step SC4 will be described in detail with reference to the flowchart in FIG.

At step SD1 in FIG. 14, it is determined whether or not M = 1. If M = 1, the process proceeds to step SD2, and further, F
It is determined whether or not = 0. If F = 0, it is determined that the normal measurement mode shown in MD21 in FIG. 16 corresponding to M = 1 and F = 0, and the process proceeds to step SD3, which will be described later in detail with reference to FIG. The MTT / MP (pulse wave conduction velocity / pulse) measurement process is performed, and the process proceeds to step SD4 where the RAM 15 '
The systolic blood pressure data and the diastolic blood pressure data are calculated based on the set values stored in the registers L0 and L1 (constants for determining the linear expressions indicating the oblique lines A and B shown in FIG. 17). It is stored in the register MS and the register MD.
Subsequently, the flow advances to step SD5 to display the calculated systolic blood pressure data, diastolic blood pressure data, and measured pulse data as shown in MD22 in FIG. 16, and then to step SD20, where G = 0.
To indicate the end of the blood pressure measurement process, and returns to the main flow of FIG.

By the above operation, in the mode of MD21 in FIG. 16,
The systolic blood pressure and the diastolic blood pressure are displayed by the measurement.

If F = 0 in step SD2, step SD6
To determine whether or not F = 1. And F = 1
If it is, it is determined that the blood pressure measurement mode is the rest measurement mode, and in step SD7, the MTT / MP measurement process described later is performed, and the flow advances to step SD8 to perform the above measurement and register MTT
Then, the time difference data and the pulse data stored in the MP are stored in the registers TTR and PR of the RAM 15 ', respectively, and the process returns to the main flow of FIG. 13 to perform the display processing of step SC5.

By the above operation, when M = 1 and F = 1, the blood pressure measurement mode is in the rest measurement mode, and the heart radio wave detection unit 9 and the pulse detection unit 10 are used in the MTT / MP measurement process described later.
Pulse data and time difference data indicating pulse wave conduction velocity are measured, and the two measured values are stored in the register TTR of the RAM 15 '.
And PR.

Next, in step SD6, if F = 1 is not satisfied, the process proceeds to step SD9, and it is determined whether or not F = 2. F = 2
If so, it is determined that the mode is the measurement mode immediately after exercise in the blood pressure measurement mode, and the MTT / MP measurement processing is performed in step SD10, and the flow advances to step SD11 to perform the above measurement and register MTT
Then, the time difference data and the pulse data stored in the MP are stored in the registers TTE and PE of the RAM 15 ', respectively, and the process returns to the main flow of FIG. 13 to perform the display process of step SC5.

According to the above operation, when M = 1 and F = 2,
Immediately after the exercise in the blood pressure measurement mode, the measurement mode is set, and the pulse wave data and the time difference data are measured by the heart radio wave detecting unit 9 and the pulse detecting unit 10, and the two measured values are stored in the register T of the RAM 15 '.
Stored in TE and PE.

It should be noted that if F = 2 in step SD9 in FIG.
The process immediately returns to the main flow in FIG.

Next, the measurement processing of MTT / MP in steps SD3, SD7, and SD10 will be described in detail with reference to the flowchart in FIG.

In step SE1 of FIG. 15, the control unit 13 'outputs a signal a to detect a heart radio wave, activates the heart radio wave detection unit 9, and outputs a signal b to detect a pulse. To start the pulse detecting unit 10. Then, proceed to step SE2,
It is determined whether or not a heart radio wave (electrocardiogram R wave) has been detected. If no heart radio wave is detected in this determination, the flow advances to step SE5, where it is determined that N = 1 is not satisfied, and the flow advances to step SE9.
Since this is not the case, the process is repeated. However, when a heart radio wave is detected thereafter, step SE2 is performed.
From step SE3 to start the timer register T in the work area of the RAM 15 '(not shown) to start timekeeping.
Next, the process proceeds to step SE4, where "1" is set in a flag register N (not shown), and the process returns to the start routine.

With the above operation, the timer T is started by detecting the heart radio wave.

When the flag N becomes 1, the flow advances from step SE2 to step SE5 at the time of execution of the subsequent flow.
= 1 is determined. Then, since N = 1, the process proceeds to step SE6, and the determination is repeated as to whether or not the pulse after the detection of the heart radio wave is detected. If a pulse is detected, the timer register T is stopped in step SE7, "2" is set in the flag register N in step SE8, and the process returns to the departure routine.

When a pulse is detected by the above operation, the timer T
Stops, and the flag N is set to "2". That is, the timer T stores a time difference from the detection of the heart radio wave to the detection of the pulse at the fingertip, that is, pulse wave velocity data.

Next, in step SE5, it is detected that N is not 1, and the process proceeds to step SE9 to determine whether or not N = 2. Then, since N = 2, the next step SE
At 10, further detection of the next pulse is performed. Pulse data is obtained from the time difference between the second pulse and the previous pulse. Although not shown, the time difference data of the timer T measured from the heart radio wave detected in step SE2 and the pulse detected in step SE6 is stored in the register MTT of the RAM 15 '.
After the pulse data is stored in the register MP of the RAM 15 'as pulse data, N = 0 indicating the completion of the process is set.

By the above operation, pulse wave velocity data and pulse data are measured, and the pulse wave velocity data (time difference data) and pulse data are stored in the registers MTT and MP of the RAM 15 ', respectively.

Bio-Measurement and Display / Information Returning to FIG. 14 again, the bio-measurement and display / information in the bio-feedback mode will be described.

In step SD1 of FIG. 14, if M is not 1, step S
Proceeding to D12, it is determined whether M = 2 and F = 2. If M = 2 and F = 2, it is determined that the display mode is the bio-measurement display mode in the bio-feedback mode, and the flow advances to step SD13 to add "1" to the register C (timer C). It is determined whether or not the timer value has reached 10 seconds.
Repeat this. When the time reaches 10 seconds, the process proceeds to step SD15. In step SD15, the MTT / MP measurement processing is performed, whereby the time difference data and pulse data stored in the registers MTT and MP, and the set values set in the registers L0 and L1 (total of four constants) And stores the systolic blood pressure data and the diastolic blood pressure data in the registers MS and MD, respectively, and stores the systolic blood pressure data, the diastolic blood pressure data and the pulse data in the registers designated by the address pointer P of the RAM 15 '. Register section K of Kj
Store in S, KD, and KP.

By the above operation, in the bio measurement display mode,
By pressing the right fingertip against the heart radio wave detecting unit 9 and the pulse detecting unit 10, blood pressure data is detected every 10 seconds, and the systolic blood pressure data, the diastolic blood pressure data and the pulse data measured based on the detected data are: These are stored in the register units KS, KD, and KP of the predetermined register Kj of the RAM 15 ', respectively.

Following the processing of step SD15, step SD16
Then, among the measured pulse, systolic blood pressure, and diastolic blood pressure, the measurement target selected in the bio selection mode is compared with the target value data set in the bio setting mode. Then, when both match, the process proceeds to step SD17 to output the signal b to activate the sounding unit 16 and perform the notification by the buzzer sound. In step SD16 above,
If they do not match, the process immediately proceeds to step SD18 described later.

By the above operation, every time the bio measurement every 10 seconds, the measured value is compared with the set target value, and when both match,
A buzzer sounds.

Note that the above match is regarded as a match if it is within a predetermined range. For example, if 125 is set as the systolic blood pressure, it is determined to be a match if the measured blood pressure is between 123 and 127.

Next, the process proceeds to Step SD18, where the value of the address pointer P is updated and the register Ki (i =
j + 1), and proceeds to Step SD19.
It is determined whether or not the biometric measurement was final. This determination process is performed, for example, when the value of the updated address pointer P is
This is performed by determining whether or not it indicates that all the registers Kj provided in the RAM have been used. Then, if it is not the final yet, the process immediately returns to the main flow in FIG. 13, performs the display process in step SC5, and repeats steps SD12 to SD14 again in the process in FIG. If the processing is final in step SD19, the flow advances to step SD20 to set G = 0, set the end of the blood pressure measurement processing, and return to the main flow.

By the above operation, the register Kj is sequentially designated every 10 seconds until the measurement is completed, and the measurement data is sequentially stored in the designated register Kj. Then, the measurement data is displayed on the LCD 2 again.

In the display process of the biomeasurement, for example, as shown in FIG. 16 MD33, the target value `` 125 '' of the systolic blood pressure which is the selected and set biomeasurement target is blinked and displayed every 10 seconds as described above. The executed bio-measured value is compared with a target value for each measured value, and the comparison result is displayed on the dot matrix display unit 2-1. In the display, one measurement result is indicated by one dot, and displayed while being sequentially shifted from the right column to the left column in five vertical stages. For example, when the first measured value is largely separated from the target value, it is displayed on the uppermost line like a display dot 33-1 shown in MD33 in FIG. The display dot 33-1 is initially displayed at the top of the right end column, and is sequentially shifted to the left along with the display of the display dots 33-2 and 33-3 as subsequent measurement results. It is a thing. The display of the display dot 33-2 in the second row indicates that the measurement result at this time is slightly distant from the target value. The display of the display dot 33-3 in the middle indicates that the measurement result at this time is substantially the same as the target value. Furthermore, if the measurement result is slightly below the target value, it is displayed below the middle row, and if it is significantly below, it is displayed at the bottom row.

In this way, the result of comparison with the target value is displayed at a glance at each measurement with the biometric measurement. Also,
The display is shifted to the left sequentially as the measurement is performed, and becomes a graph display, so that the progress of biofeedback every 10 seconds can also be seen at a glance.

As described above, by simply wearing the watch on the wrist and pressing the two fingertips with the other hand against the concave pulse detector on the front and the heart radio wave detection electrode, the systolic blood pressure, diastolic blood pressure or pulse Bioassay can be performed easily. Therefore, it is not necessary to use a large device that requires a lot of trouble to handle, and it can be carried at all times, so that bio-measurement can be performed at any place or time zone, and the measurement site such as a fingertip is affected by pressure or the like. Because there is no distraction, training for mental unity and stability can be performed without disturbing the heart.

In the above embodiment, the comparison results are sequentially displayed on the display unit 2-1 each time the biometric measurement is performed. However, the comparison results may be recalled from the RAM after the measurement and displayed at once.

Further, in this embodiment, an example in which the present invention is applied to an electronic wristwatch has been described. However, the device itself may be a wristwatch type and may be a device dedicated to blood pressure measurement without a clock function. Further, other functions such as an electronic organizer function and a scheduler function can be incorporated, and various applications can be considered. In addition, although an LED and a phototransistor are used in combination for pulse detection, another pressure detection sensor may be used. Furthermore, constants calculated from the inputted maximum and minimum blood pressure values, the measured pulse and the time difference data (pulse wave velocity) are set in the registers L0 and L1.
Even if L0 and L1 are not provided, the blood pressure value at that time can be obtained by calculation for each blood pressure measurement.

Further, although there is no indication about the display of blood pressure data and pulse data stored in the register Kj, for example,
One switch S6 is provided, and each time the switch S6 is operated, the sequentially stored data is displayed on the display unit 2-3 of the LCD2.
-5 can be sequentially switched and displayed.

In the first embodiment as well, the comparison result of the measured data can be displayed on the LCD 2 as a graph.

[Effects of the Invention] According to the present invention, a function of measuring systolic / diastolic blood pressure or pulse, and a function of comparing a measurement result with a target value and notifying by a sound or display when the measured result agrees are incorporated in a small-sized device. Therefore, it is possible to carry the biofeedback measurement by always carrying it. In addition, since the display is a graph, the quality of the measurement result can be read quickly and easily.

[Brief description of the drawings]

FIG. 1 is an external view of an electronic wristwatch according to an embodiment of the present invention, FIG. 2 is a block diagram of the internal configuration of the electronic wristwatch, FIG. 3 is a main internal configuration diagram of a RAM, and FIG. 5 is a flowchart showing the flow, FIG. 5 is a flowchart showing details of the blood pressure measurement process in the flowchart of FIG. 4, FIG. 6 is a diagram for explaining a mode switched by operating switches S1, S2 and S3, and FIG. FIG. 8 is an external view of an electronic wristwatch according to another embodiment, FIG. 8 is a diagram showing a liquid crystal display section of the electronic wristwatch in detail, FIG. 9 and FIG. FIG. 11 is a block diagram of the internal configuration of the electronic wristwatch. FIG. 12 is a main internal configuration diagram of the RAM of the block diagram. FIG. 13 is a main flowchart showing a flow of the entire program. Detailing FIG. 15 is a flowchart showing details of the MTT / MP processing of FIG. 14, FIG. 16 is a view for explaining a mode switched by operating switches S1, S2, S3, and S4, and FIG. It is a figure which shows the correlation of a high blood pressure or a diastolic blood pressure and a pulse-wave conduction velocity. 1, 1 '... watch case main body, 1-2 ... circuit board, 1-3 ... interconnector, 2 ... LCD (liquid crystal display), 2-1 ... dot matrix display section, 2-2 ... ... Mode display section, 2-3 ... Small segment display, 2-4 ... Heart display, 2-5 ... Large segment display, 5 ... Pump room, 6 ... Detector, 7 ... Blood pressure Detecting device, 9: Heart radio wave detecting unit, 9-1: Heart radio wave detecting electrode, 9-2: Back cover (cardiac radio wave detecting electrode), 9-3: Conductive elastic member, 10: Pulse detection Section 10-1 LED (Effective diode), 10-2 Photo transistor, 11 ROM (fixed memory), 12 Key input section, 13 13 'Control section (CPU), 19 ...... Decoder / driver section, 20 ... Display section, 18 ... Oscillator, 17 ... Division / timing section, 15, 15 '... RAM (random Access memory), 16 …… Information section.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61B 5/16 A61B 5/02-5/0295

Claims (5)

(57) [Claims] 1. Data storage means for storing at least blood pressure data at rest and immediately after exercise, pulse data, and pulse wave conduction time data; heart wave detection means; pulse detection means; Measuring means for measuring delay time data from the generation of a cardiac wave to the detection of a pulse wave detected by the pulse detecting means; the delay time data measured by the measuring means; the pulse detected by the pulse detecting means Calculating means for calculating the blood pressure data at the time when the delay time data is measured, based on the data and the blood pressure data, pulse data and pulse wave conduction time data stored in the data storage means; Blood pressure data storage means for storing the obtained blood pressure data; calculating the blood pressure data stored in the blood pressure data storage means by the arithmetic means; Biofeedback device comprising comparing means for comparing been a blood pressure data, and informing means for informing the result of the comparison by the comparing means, to have a. 2. The biofeedback apparatus according to claim 1, wherein the blood pressure data stored in said blood pressure data storage means is systolic blood pressure data. 3. The biofeedback apparatus according to claim 1, wherein the blood pressure data stored in said blood pressure data storage means is diastolic blood pressure data. 4. The biofeedback apparatus according to claim 1, wherein the blood pressure data stored in said blood pressure data storage means is pulse data. 5. The biofeedback apparatus according to claim 1, wherein said notifying means displays a graph of the comparison data obtained as a result of the comparison by said comparing means.