JPH0454936A - Non-contact type body heat memory - Google Patents

Abstract

PURPOSE:To enable the discrimination of a high temperature period from a low temperature period by quick non-contact measurement of a woman by arranging a signal processing means to obtain an absolute value of body heat from a signal value only involving infrared rays from the body heat, a memory means to store the absolute value corresponding to a date read out from a date counting means and a display means. CONSTITUTION:This apparatus is provided with signal processing means 31, 32, 34, 36 and 40 which obtain an absolute value of body heat from a signal value only involving infrared rays from the body heat determined based on an output signal to be obtained with the impinging of infrared rays into an infrared sensor 26 and an output signal corresponding to a temperature to be obtained from a temperature measuring means 23 with the cutting of an infrared rays intercepting/passing means 22, a memory means 46 to store the absolute value of the body heat obtained corresponding to a date at which it is read out of a date counting means 44 and a display means 47 to show the absolute value of the body heat and/or the body heat stored. Thus, the absolute value of the body heat is stored corresponding to the date while the absolute value of the body heat and the body heat stored is displayed, thereby enabling noncontact measurement of the body heat of a woman or the like quickly and this also permits discrimination of a high temperature period involving a fundamental body heat from a low temperature period quickly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a non-contact body temperature storage device suitable for use in determining whether a woman's basal body temperature is in a high-temperature period or a low-temperature period.

[Summary of the invention]

The present invention relates to a non-contact body temperature storage device suitable for use in determining whether a woman's basal body temperature is high or low. A blocking and passing means, a temperature measuring means for measuring the temperature of the infrared blocking and passing means, and an output signal obtained when the infrared blocking and passing means are opened and the infrared rays are incident on the infrared sensor and the infrared blocking and passing means are blocked. and a signal processing means for obtaining an absolute value of body temperature from a signal value related only to infrared rays from the determined body temperature based on an output signal corresponding to the temperature obtained from the temperature measuring means, a sundial counting means, and a signal processing means. By comprising a storage means for storing the absolute value of the body temperature obtained in accordance with the date and time read from the date counting means, and a display means for displaying the absolute value of the body temperature and/or the stored body temperature, It is designed to enable the high temperature period and low temperature period related to the basal body temperature of women, etc. to be determined as quickly as possible.

[Conventional technology]

Conventionally, for example, as a means of measuring a woman's basal body temperature,
Mercury thermometers are well known. Additionally, digital thermometers that indicate body temperature numerically are widely used.

This digital thermometer has a temperature sensing part such as a thermistor or semiconductor temperature sensor that detects temperature by contacting the human body, and a temperature signal processing part that processes the signal obtained from this temperature sensing part into a value corresponding to body temperature. , consists of an LCD display section, etc. for displaying body temperature numerically, and the measured body temperature is displayed numerically.

The measured basal body temperature of the woman is then plotted on a line graph or the like to determine the so-called high temperature period or low temperature period.

[Problems to be Solved by the Invention] However, both mercury thermometers and digital thermometers take a relatively long time, for example, 45 seconds, to accurately determine body temperature, making it difficult to measure body temperature quickly. Especially,
Basal body temperature is measured every day, which is a burden, and there is also the drawback that it takes time and effort to plot and record the measured basal body temperature on a line graph, etc., in order to determine whether it is a high temperature period or a low temperature period. .

The present invention was made in view of the above-mentioned problems, and is an excellent non-contact device that can quickly measure a woman's body temperature without contact, store and display it, and quickly distinguish between high and low temperatures related to basal body temperature. The purpose is to provide a contact type body temperature storage device.

[Means to solve the problem]

For example, as shown in the non-contact body temperature storage device of FIGS. 1 to 5, the present invention includes an infrared sensor (26) and an infrared ray for blocking or passing infrared rays incident on the infrared sensor (26). blocking and passing means (22);
A temperature measuring means (23) for measuring the temperature of the infrared blocking and passing means (22), and an infrared blocking and passing means (22).
2) is opened and infrared rays are incident on the infrared sensor (26), resulting in an output signal and an infrared blocking and passing means (
22) is shut off, and the signal processing means (31) obtains the absolute value of the body temperature from the signal value related only to the infrared rays from the determined body temperature based on the output signal corresponding to the temperature obtained from the temperature measuring means (23). 32) (34) (36) (40
), a sundial counting means (44), and a signal processing means (31)
(32) (34) (36) A storage means (46) for storing the absolute value of body temperature obtained in (40) in correspondence with the date and time read out from the sun clock means (44), and the absolute value of body temperature. and/or display means (47) for displaying the stored body temperature.

[Effect]

According to the non-contact body temperature storage device of the present invention, the infrared rays from the living body are incident on the infrared sensor (26) and the output signal obtained from the infrared ray blocking/passing means (22) is blocked, and the temperature measuring means The absolute value of body temperature is obtained from the signal value related to infrared rays of only body temperature based on the output signal corresponding to the temperature obtained from (23), and the absolute value of body temperature obtained is further stored corresponding to the date and time. Along with this, the absolute value of body temperature and/or the stored body temperature is displayed. As a result, the body temperature of a woman or the like can be quickly measured without contact, stored and displayed, and the high temperature period and low temperature period related to basal body temperature can be determined as quickly as possible.

〔Example〕

Hereinafter, embodiments of the non-contact body temperature storage device of the present invention will be described in detail with reference to the drawings.

In Fig. 1, (10) indicates a person (living body), and (12) indicates the first value of the value corresponding to the level of infrared radiation emitted from each part of the person (10). A temperature detection section is shown which sends out a detection signal S1 of 1 and a second detection signal S2 indicating the temperature of a member of Nyatta (22), which will be described later. Furthermore, (14) is obtained by calculating the absolute value of the body temperature of the living body (10) from the value (voltage) of the second detection signal S2 indicating the input shutter temperature and the first detection signal S1. This is a signal processing and display unit that stores and displays the absolute value of body temperature.

In order to measure the body temperature of a desired part of the person (10), the temperature detection part (12) uses infrared radiation emitted from the part. The entire tube member (16) is movable so as to be able to accurately detect the object, and a condenser lens (objective lens) (20) is provided near one opening (18) of the tube member (16). Furthermore, a shutter (22) is provided after the condenser lens (20).
is provided, and this shutter (22) is connected to the drive unit (2
Opening or blocking is performed by driving 4). This blocks or allows infrared rays □ incident from the condenser lens (20) to pass through.

Furthermore, the absolute value (1) of the temperature detected from the member and the value of the second detection signal S2 (
A temperature detecting element (23) such as a thermistor or a semiconductor sensor whose value (Vs) changes according to a -order function is attached with an adhesive or the like.

Further, a pyroelectric infrared sensor (26) is provided at the bottom (16a) of the cylindrical member (16) behind the shutter (22), and the shutter (22) is momentarily opened (for example, for 1 second). When this infrared sensor (26) detects a person (
The infrared rays IRa emitted from the measurement site 10) are incident through the condensing lens (20) and the shutter (22), and a first detection signal S1 indicating a voltage having a corresponding value is sent out. . Here, a pyroelectric infrared sensor (2
6) shows the output characteristics shown in FIG. That is, the value of the first detection signal S1 (voltage Vout) and the person (1
0), the measurement site temperature T (t) is expressed by the following equation (1
).

Vout = f (T) - (1)
The first detection signal S1 obtained in this way and the second detection signal S1
The detection signal S2 is supplied to the input terminals Til, Ti2 of the signal processing and display unit (14), and then the amplifier (
31) and (32) respectively. Here, the digital first detection signal Sld is amplified to a predetermined value and then input to the A/D converter (34) (36) and quantized.
and a digital second detection signal S2d is output. Furthermore, a microprocessor (M P
U') (40) is provided. This MPU (
40) is a CPU (40a) that performs well-known control processing.
The program related to this calculation is stored, and the absolute value (1) of the member temperature of the shutter (22) is calculated from the value of the second detection signal S2 output from the temperature detection element (23). ROM (40
b) A working RAM (40C), and a CPU (40a) that processes the input signals of the first digital detection signal Sld and the second digital detection signal S2d, or outputs them from there. I10 ports (40d) (40e) that apply signals to predetermined signals, respectively
(40f). The MPU (40) is also provided with a measurement instruction switch (42) for instructing the start of measuring the body temperature of the measurement site of the person (10).

Furthermore, it has a timer/calendar circuit (44) that counts the time and shows the current time and year, month, and day, and stores up to 6 months of measured body temperature (absolute value °C) corresponding to the date of measurement. A readout instruction switch (48) for reading out the body temperature stored in the memory (46) on a monthly basis is connected to the memory (46).

Furthermore, a display device such as an LCD (47) is used to display the body temperature calculated by the MPU (40) or the body temperature read from the Memo'J (46) in a graph corresponding to each day.
) and red and blue LEDs (47a) (47b) to indicate the high temperature period (H) and low temperature period (L) are M
Connected to PU (40).

FIG. 3 shows the above external configuration.

A condenser lens ((20) is disposed in one opening (18) of a substantially rectangular cylindrical member (16) into which infrared radiation emitted from a person (10) is incident. 16
) are provided with a measurement instruction switch (42) for instructing the start of body temperature measurement and a display (47) such as an LCD. In addition, the LED (47a) (471:+) that displays the high temperature period (H) and low temperature period (L), the readout instruction switch (48), and the power switch (4
9) is provided.

Next, the operation related to the above configuration will be explained based on the flowchart of FIG. 4.

After the whole body moves, in order to measure the body temperature of a desired part of the person (10), the condensing lens ( 2
0) to face the site. Then, press the measurement instruction switch (
42) is turned on (ON), and MPU (40
) is started, and in step 100 a control signal S for closing the shutter (22) is sent to the drive unit (24).

Subsequently, in step 101, the shutter <22)
A second detection signal S2 from the temperature detection element (23) attached to the member, that is, a signal that detects the absolute value of the temperature of this member, is sent to the A/D converter (3) via the amplifier (32).
6) and the digital second detection signal S2s obtained here is sent to the CPU (40a) of the MPU (40).
The data is taken in under the control of Furthermore, in step 102, the captured digital second detection signal S2++ is
It is stored in the corresponding area of M (40c). Furthermore, in step 103, from the MPU (40) to the drive unit (24),
For example, a control signal S, which is on (○N), is sent out to open the shutter (22) for one second.

Subsequently, in step 104 (auxiliary operation), the shutter (22) is opened for one second by actuation of the drive section (24) based on the control signal S. Here, the condenser lens (2
The infrared rays IRa focused by the infrared sensor (26)
is incident on the A first detection signal SI of a voltage vout corresponding to the level of the infrared ray IRa based on the output characteristics shown in FIG. 2 is sent from this infrared sensor (26). Furthermore, in step 105, the amplifier (31) to which the first detection signal S1 is supplied and the A/D converter (
34) The digital first detection signal S+a obtained via
is taken in under the control of the CPU (40a) of the MPU (40).

In step 106, it is determined whether the first digital detection signal Sld has been captured. If NO, that is, the body temperature of the desired part of the person (10) is detected by the infrared sensor (26).
) is not detected normally, the process returns to step 103 and the detection of infrared IR is repeated. If Yes, the process proceeds to step 107, and the captured digital first detection signal Sld is stored in a different area from the corresponding digital second detection signal S2d of the RAM (40C). Furthermore, in step 108, RAM (4
0c) Digital second detection signal S2d stored in
is read out to the work area under the control of the CPU (40a). In step 109, based on the voltage value of the read digital second detection signal S2d, the ROM (40
b) Shutter (2) according to the conversion table stored in
2) Obtain the absolute temperature 11i[(t) of the member. Furthermore, in step 110, the output characteristics of the temperature detection element (23) and infrared sensor (26) shown in FIG. Vout = f (T) in equation (1)
The calculation is performed assuming that the measured body temperature (T) at is the value (Ts), and a voltage Vs corresponding to the value (voltage Vout) of the first detection signal Sl is obtained. Subsequently, in step 111, the digital first detection signal Sld stored in the RAM (40c) is sent to the CPU (40a).
The data is read out to the work area under the control of

Furthermore, in step 112, the read digital first
The voltage value V out of the detection signal Sld is the measured body temperature (
T) Absolute value T of the body temperature of the measurement site of the person (10) above
Convert to O. Here, first, the voltage Vs related to the absolute value of the temperature of the shutter (22) obtained in step 110 and the voltage value Vout of the digital first detection signal Sld are calculated as the output of the infrared sensor (26) shown in FIG. Expression showing the characteristic (
Convert from Vout = f (T) in 1). That is, when the shutter (22) is momentarily opened, the voltage value Vout detected by the infrared sensor (26) changes from the voltage vO corresponding to the desired body temperature of the specific region to the voltage Vs corresponding to the temperature of the shutter (22). It is calculated by the following formula by subtracting .

Vout = Vo -Vs - (2>, therefore, Vo = Vout -I-Vs - (3)
Furthermore, Vo = f (Ts), and the absolute value of body temperature (t) To is To =
f-' [Vout +Vs: i - (4).

In step 113, the person obtained in this way (1
0) is displayed in the body temperature display column N of the display screen of the display device (47) shown in FIG. Subsequently, in step 114, the CPU (40) of the MPU (40) is sent from the timer/calendar circuit (44) to the CPU (40) of the MPU (40).
a) The current month and day information is taken in by the control of. Furthermore, in step 115, take note of the information about the current month and date and the absolute value of body temperature (t) To! J (46
). Then, in step 116, for example, the absolute value (t) To of the body temperature measured every day is sequentially stored in the memo 'J (46) along with the current month and date. In this case, for example, the absolute value of daily body temperature for six months (1)
TO can be memorized, and the absolute value of body temperature ('C) is greater than this. When To is memorized, the absolute value of body temperature ('C) is
) To is deleted.

Further, in step 117, note 'J (46
) displays the absolute value To of the body temperature stored in the display (47).
It is then determined whether or not to display the graph visually as a line graph. That is, the read instruction switch (48) is turned on (O
N) It is determined whether or not it has been done. If Yes, proceed to step 118. In this case, it is possible to display the absolute value (t) of the stored daily body temperature for each of the six months, by sequentially turning on the readout instruction switch (48). , each month can be selected in the selection month column M shown in FIG. No
If so, proceed to step 121.

Then, step 118: Memo! Read out all the absolute values TO of body temperature measured in the days up to the present stored in J (46). Here, the absolute value of body temperature (t)T
The sum of o (a = b + c = - d = e - ·) is expressed as the corresponding total number of measurement days (na + nb + nc - ηd〒n
e...) is executed under the control of the CPU (40a) to calculate the arithmetic mean (m). Subsequently, in step 119, the arithmetic mean (m) and measurement date (n a, n b, n c, n d, n e
-) absolute value of body temperature To (aSbS
c, d.

e...) to obtain the respective absolute values of the differences. Then, in step 120, the values obtained in step 119 are displayed as a line graph shown in FIG. In this case, the H part whose value is larger than the arithmetic mean (m) is a high temperature period, and the L part whose value is smaller than the arithmetic mean (m) is a low temperature period. By displaying it as a line graph like this, you can understand your basal body temperature during high and low temperatures at a glance.

Furthermore, in step 121, which is proceeded to when the read instruction switch (48) is not turned on for a predetermined period of time in step 117, the memo! J (46) reads out all the absolute values TO of body temperatures measured in the days up to the present and calculates the arithmetic mean (m). Subsequently, in step 122,
The absolute value TO of the currently measured body temperature stored in Memo'J (46) is read out.

Then, in step 123, the absolute value TO of the currently measured body temperature is compared with the arithmetic mean (m) to determine whether it is a high temperature period or a low temperature period. In step 124, if the high temperature period is larger than the arithmetic mean (m), red L E D (47
a) Lights up, and in the case of low temperature, turns on the blue L E
Control to light up D (47b) is performed by CPU (47b).
0a). By displaying the high-temperature period and the low-temperature period in red and blue (47a) (47b) in this way, the high-temperature period and the low-temperature period can be quickly distinguished.

At this point, one process of the program ends, and then the program returns to the start, and the next measurement and display of the absolute value To of body temperature becomes possible.

In this way, first, the shutter (22
) is momentarily opened, and the infrared rays IRa emitted from a desired part of the person (10) are incident on the infrared sensor (26) to obtain the corresponding voltage value Vout, and further
22) is detected by the detection element (23), and this signal is calculated from the output characteristics of the infrared sensor (26) to obtain the voltage Vs corresponding to the shutter temperature.

Then, based on the signal obtained by detecting the infrared rays incident when the shutter (22) is opened and the voltage VO corresponding to the temperature of the shutter (22), that is, the absolute temperature of the body temperature is determined from only the voltage VO related to the infrared radiation measurement of the body temperature. The value To(t) is calculated, and the absolute value To of body temperature measured daily is stored in memory.
The arithmetic mean (m) of the body temperature can be distinguished into high temperature periods and low temperature periods and displayed in a line graph, or the body temperature at the time of measurement can be expressed as the arithmetic mean (m
) Red LED (47a) in case of high temperature period with higher value than
, and in the case of low temperature, turn on the blue light E D
(47b) is lit, allowing you to understand at a glance your basal body temperature during high and low temperatures.

FIG. 6 shows another embodiment. In the above example, the voltage V
Equations (1) to (4) of M P U (40) corresponding to the output characteristics of the temperature detection element (23) from s and the voltage value Vo
), the absolute value ('C)TO of the body temperature of the measurement site of the person (10) is obtained, but in this example, Equation (1)
A conversion table (ROM
). That is, the first detection signal S1
and the second detection signal S2 are transmitted through the amplifiers (31) (32)
The first processing circuit (50) processes f (Ts) and the second processing circuit (50) processes f-' (Vo).
The processing circuit (52) is manually operated. First processing circuit (5
After the second detection signal S2 is converted into a digital signal by the A/D converter (54), the first conversion ROM (56) of the data conversion memory converts the signal f(
Ts), that is, a conversion is performed to obtain a value similar to the voltage Vs. Subsequently, it is converted into an analog signal by a D/A converter (58), and at the same time, it is added to the first detection signal S1 from the amplifier (31) by an adder (60).

The added signal here is converted into a digital signal by the A/D converter (62) of the second processing circuit (52), and then converted into a digital signal by the second conversion ROM (64) which is a data conversion memory. By performing a similar transformation of f-' (Vo), To = according to equation (2) (3) (4)
f-' [Vout -L, Vs) calculation processing is performed to obtain the absolute value (t) To of body temperature. In addition,
Measurement control and display signal processing are the same as in the above embodiments, and their explanations will be omitted.

Furthermore, without being limited to the above embodiment, the first detection signal S
1 and the second detection signal S2 as analog signals may be subjected to similar signal processing via a broken line approximation circuit to obtain the absolute value ('C) To of body temperature.

It is clear that the present invention is not limited to the above-described embodiments, and that various changes can be made without departing from the gist of the present invention.

〔Effect of the invention〕

As can be understood from the above description, according to the non-contact body temperature measuring device of the present invention, the infrared ray blocking and passing means blocks the output signal obtained when infrared rays from a living body are incident on the infrared sensor. The absolute value of body temperature is obtained from the signal value related to infrared rays of only body temperature after subtracting the output signal corresponding to the temperature obtained from the temperature measuring means, and the absolute value of body temperature obtained is further stored in correspondence with the date and time. At the same time, the absolute value of body temperature and/or the stored body temperature is displayed, so the body temperature of women, etc. can be measured quickly without contact.
Moreover, there is an advantage that the high temperature period and the low temperature period related to the basal body temperature can be determined as quickly as possible by being stored and displayed.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the non-contact body temperature measuring device of the present invention, FIG. 2 is an output characteristic diagram of an infrared sensor used to explain the operation of the embodiment shown in FIG. 1, and FIG. FIG. 4 is a flowchart for explaining the operation of the embodiment shown in FIG. 1, FIG. 5 is a configuration diagram of the display screen of the display device, and FIG. FIG. 2 is a block diagram showing the configuration of main parts of the embodiment. (10) is a person, (12) is a temperature detection unit, (14) is a signal processing and display unit, (20) is a condensing lens, (22) is a nyatta, (23) is a temperature detection element, (24) is Drive unit, (26) is an infrared sensor, (40) is MPU, (42)
) is the measurement instruction switch, (44) is the timer/calendar circuit, (46) is the memory, (47a> (47b) is the LE
D, (48) is a read instruction switch, SI is the first
, S2 is the second detection signal, Sld is the digital first detection signal, Sza is the digital second detection signal,
IR is infrared light.

Claims (1)

[Scope of Claims] An infrared sensor, an infrared blocking and passing means for blocking or passing infrared rays incident on the infrared sensor, a temperature measuring means for measuring the temperature of the infrared blocking and passing means, and the above-mentioned infrared blocking and an output signal obtained when the passing means is opened and infrared rays are incident on the infrared sensor, and an output signal corresponding to the temperature obtained from the temperature measuring means when the infrared ray blocking and passing means are cut off. a signal processing means for obtaining an absolute value of body temperature from a signal value related only to infrared rays from body temperature; a sundial counting means; and a date and time when the absolute value of body temperature obtained by the signal processing means is read from the sundial counting means. a storage means for storing the absolute value of the body temperature and/or
or a display means for displaying the stored body temperature; and a non-contact body temperature storage device.