JPS5977857A - Ryodoraku detection device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a Ryodoraku detection terminal used in a detector or the like to detect Ryodoraku points on a living body by bringing a Ryodoraku detection terminal into contact with the skin surface of a living body. It is related to the device.

Configuration of conventional examples and their problems Conventionally, Ryodoraku detection devices have two methods: (1) detecting Ryodoraku by applying a DC voltage to a living body, or (2) applying an AC voltage to a living body. Accordingly, there are methods of detecting Ryodoraku.

However, according to the method of applying a DC voltage, due to the polarization effect of the living body, the equivalent impedance of the living body changes over time between the time when the Ryodoraku detection terminal contacts the living body surface and the time after contact. When detecting the Ryodoraku point, there were times when it was detected incorrectly.

Furthermore, even with the AC application method, there is a drawback that the circuit is complicated.

Purpose of the Invention The present invention has been made in view of the above-mentioned drawbacks, and is a Ryodoraku method that makes it possible to detect Ryodoraku points in a stable and reliable state by preventing the polarization effect of the living body. SUMMARY OF THE INVENTION The present invention aims to provide a detection device that detects a living body by intermittently applying a direct current or by applying an alternating current signal such as a sine wave or a triangular wave to the skin surface of the living body. prevents polarization on the skin surface,
After contacting the Ryodoraku detection terminal with the skin surface, the equivalent impedance of the living body can be stably detected despite the passage of time.

Description of examples Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figure 1 depicts a part of a living organism (human body).
Points 22, 20, and 21 represent the points of contact of the Ryodoraku detector with the human body. 22 is a common terminal of the Ryodoraku detector,
20 and 21 are detection terminals of the Ryodoraku detector. Here, 20 is the Ryodoraku point side, and 21 is the non-Ryodoraku point side.

The living body shown in Figure 1 can be electrically replaced with any circuit such as the one shown in Figure 2.

FIG. 3 shows a signal generated from a signal generator 103 such as a sine wave or a rectangular wave in FIG. is input to the living body 123 from an arbitrary point 122 on the surface of the living body's skin, and is further input to buffer amplifiers 105 and 106 from arbitrary points 120 and 121 on the living body. Here, the equivalent impedance 101 of the living body between points 120 and 122 on the living body surface is Z, and the equivalent impedance 102 of the living body between points 121 and 122 on the surface of the living body clothing 01 is Z1o2.

Therefore, the levels of the input terminals of the buffer amplifiers 105 and 106 will differ depending on the equivalent impedance of the living body. That is, the equivalent impedance of the living body Z1o1. Z1o
If one of 2 is Ryodoraku, buffer an 7'10
A difference in output level of 5,106 is recognized.

Now, in the block diagram of FIG. 3, one of the measurement points 120 is assumed to be a Ryodoraku point, and the other one of the measurement points is assumed to be a non-Ryodoraku point. Therefore, the equivalent impedance of a living body has the following relationship.

Equivalent impedance of the living body 101=Z1o1<Equivalent impedance of the living body 1o2=Z1o2 Therefore, the AC signal output levels of the buffer amplifiers 105 and 106 are different. In this block diagram, measurement point 120
is the Ryodoraku point and Zl. 1〈Zl. Since it is 2,
AC signal output level of buffer amplifier 105>AC signal output level of buffer amplifier 106.

104 is an automatic control device for preventing the amplifiers of the buffer amplifiers 106, 106 from becoming saturated; 0 buffer amplifier 105. The signal output of the buffer amplifier 106 on the non-conducting point side is connected to the DC component removing device 107.
, 108 remove the DC component, and convert it into a DC component by DC component conversion devices 109, 110 such as an integrating circuit or a rectifier circuit. The output DC voltages of the converters 109 and 110 are input to a comparison level determination device 113 set to an arbitrary level by comparison level setting devices 111 and 112, and compared and determined.

The output of the comparative judgment result of the comparison level judgment device 113 can be transmitted by a Ryodoraku detection result information transmission device 115 comprising a Ryodoraku detection display or a sound generation device.

As described above, according to the device shown in the block diagram of FIG. 3, by bringing the detection terminal 120° 121 into contact with the skin surface of the living body and by contacting the common contact terminal 122 with the skin surface, the detection terminal 120° 121 When either one of the two contacts the Ryodoraku point, the Ryodoraku point can be easily detected.

Next, FIG. 4 shows another embodiment of the present invention, and is an example of a block diagram of a device that detects the Ryodoraku point of a living body by intermittently applying a DC voltage to the skin surface of the living body. This shows that.

In FIG. 4, the DC voltage applied from the common measurement terminal 222 on the surface of the living body corresponds to the equivalent impedance 201 inside the living body.
．． 202, two detection terminals 220, 221 on the skin surface of the living body, opening/closing devices 217, 218, and input to pamphlet 1 amplifiers 205, 206. Here, 203 is a control device that controls switches 217 and 218.

Further, 204 is an automatic control device for preventing the buffer amplifiers 205 and 206 from becoming saturated.

Here, the equivalent impedance 201 of the living body between the measurement points 220 and 222 on the living body surface is Z2o1. Also, let Z be the equivalent impedance 202 of the living body between the measurement points 221 and 22 on the living body surface.

02 Therefore, the output intermittent DC voltages of the buffer amplifiers 205 and 206 differ depending on the equivalent impedance of the living body. That is, the equivalent impedance of the living body Z2o1. If one of Z2゜2 is Ryodoraku, buffer amplifier 205,
There is a noticeable difference in the output level of the 206.

Here, 216 is a DC power supply device that supplies DC voltage to the living body.

The output DC intermittent signals of the buffer amplifiers 205 and 206 have their DC components removed by DC component devices 207 and 208, and only the AC component is detected. , 210, it is converted into a DC component.

The output DC voltages of the converters 209 and 210 are set to arbitrary levels by comparison level setting devices 211 and 212, and are input to a comparison level determination device 213 for comparison and determination.

The output of the comparative determination result from the comparison level determining device 213 can be transmitted by a Ryodoraku detection result information transmitting device 215, which includes a Ryodoraku detection display or a sound generation device.

Therefore, in the case of the block diagram of FIG. 4, as in the case of FIG.
21 and the common contact terminal 222 to the skin surface, the Ryodoraku point can be easily detected when either one of the detection terminals 220, 221 contacts the Ryodoraku point. things are possible.

Next, a specific circuit example will be explained with reference to FIGS. 5 and 6.

FIG. 6 is a specific circuit example of the device shown in FIG. 3, which detects the Ryodoraku point by applying a signal such as a rectangular wave or a sine wave to the living body. Note that the number 103 shown in Figure 6
,104,105,106゜107.108,109,
110, 111, 112° 113.115 are 103, 104, 105, 106 in the block diagram of Figure 1
,107゜108.109,110,111,112,
It corresponds to 113°115.

Also, the measuring terminals 120, 121 and 122 of the living body in FIG. 5 are the measuring terminals 120, 12 in the block diagram of FIG.
1,122. Furthermore, the living body 123 in FIG. 3 corresponds to the living body 123 in FIG.

In FIG. 5, a device 103 such as a DC voltage power source 191, 192 and a signal generator 193 such as a sine wave or a rectangular wave
The signal generated by the
is input to the living body 123 and arbitrary points 120 and 1 of the living body are input to the living body 123.
21, the signal is further input to buffer amplifier blocks 105 and 106. Therefore, buffer amplifier block 1
The level of the input terminal of o6°106 will differ depending on the equivalent impedance of the living body. In other words, one of the biological equivalent impedances Z Z is Ryodoraku 1011
102, a difference is recognized between the output levels of the buffer amplifiers 105 and 106.

Here, 13 configuring buffer amplifiers 105 and 106 are shown.
Reference numerals 1 and 132 designate operational amplifiers 133 and 134 for increasing the input impedance; amplifiers 133 and 134 are amplifiers with gain adjustment; 13
When an excessive signal is input to the amplifier 133 or 134 to the extent that the power of the amplifier 133 or 134 exceeds the linear region and enters the nonlinear region, the output of the automatic control device 104 consisting of an I(-S flip-flop) becomes It becomes H level, the field effect transistors 135 and 136 turn on, and the amplifier 13
The increasing degree of 3°134 decreases. Therefore, the buffer amplifier blocks 105 and 106 can be linearly increased without being saturated.
] will be done.

Here, the input terminal levels of the buffer amplifiers 105 and 106 differ depending on the equivalent impedance of the living body, so Zl
If one of ol and Z1o2 is Ryodoraku, amplifier 10
There is a difference in the output power of 5b and 106b.

In addition, 183 and 184 are volumes for arbitrarily adjusting the DC level of the amplifier power, 181°182.137,
138, 139, and 140 are resistors. Resistance 128,1
Reference numerals 29 and 130 are for setting the threshold values of the operational amplifiers 124 and 126 constituting the R-s7 repro flop. 125° and 127 are NOR gates, which are elements constituting an R-S flip-flop.

Now, in the circuit of FIG. 5, one of the measurement points 120 is assumed to be a good connection point, and the other one of the measurement points is assumed to be a non-good connection point. Therefore, the equivalent impedance of the living body has the following relationship.

Equivalent impedance of the living body 101 = Z1o1 <Equivalent impedance of the living body 102 - Z1o2 Therefore, the amplifier 133
, 134 will be different. In this explanation, the measurement point 120 is the Ryodoraku point, and 2 < 2
101 102 Therefore, the AC signal output level of the amplifier 133 > the amplifier 134
AC signal output level.

Ryodorudou point side amplifier 133. The signal output from the amplifier 134 on the side of the non-conductive point has its DC component removed by a DC component removal device 107, 108, and converted into a DC component by a DC component conversion device 109, 110 such as an integrating circuit or a rectifier circuit. converted. In the embodiment of FIG. 6, a DC component removing device 107,
108 is composed of capacitors 141 and 142. Further, the converting devices 109, 110 to DC components are connected to resistors 143°144.149.150. Diode 151°152.
153, 154, semi-fixed resistors 145, 146, and operational amplifiers 147, 148. Semi-fixed resistance 145,
Reference numeral 146 provides a desired reference voltage to the arithmetic multiplier [1]. Also, diodes 151, 152, 15
The circuit configuration of 3,154 constitutes an ideal rectifier circuit.

The output DC voltages of the operational amplifiers 147 and 148 are set to arbitrary levels by the comparison level setting devices 111 and 112, and are input to the comparison level determining device 113 for comparison and determination. Here, the comparison level setting devices 111, 112 include resistors 155, 156°, 157.158. Semi-fixed resistance 159
, 160. Further, 161 is an operational amplifier constituting the comparison level determination device 113. The output of the comparison judgment result of the comparison level judgment device 113 can be transmitted by a Ryodoraku detection result information transmission device 115 consisting of a Ryodoraku detection display, a sound generation device, or the like. In this circuit diagram example, the piezoelectric speaker 169 produces sound when the input to the operational amplifier 164 is at H level. 166 is an operational intensifier, 163, 165, 1
68 is a resistor, and 167 is a capacitor.

As described above, according to the apparatus shown in FIG. 6, by bringing the detection terminals 120, 121 into contact with the skin surface of the living body and by contacting the common contact terminal 122 with the skin surface, it is possible to detect which of the detection terminals 120, 121 is in contact with the skin surface of the living body. When one of the two contacts the Ryodoraku point, it is possible to easily detect the Ryodoraku point.

Next, FIG. 6 shows a specific example of the circuit of the device shown in FIG. 4, which detects the Ryodo-jun point of a living body by intermittently applying a DC voltage to the skin surface of the living body.

In FIG. 6, the DC voltage applied from the common measurement terminal 222 on the surface of the living body is equivalent to the equivalent impedance Z2 inside the living body.
01+ 202, further via two detection terminals 220 and 221 on the skin surface of the living body, and further to the opening/closing device 21.
7 and 218, and is input to buffer amplifiers 205 and 206. In this circuit, an example is shown in which the switching devices 217 and 218 are configured with field effect transistors 281 and 282.

Here, 203 is a control device for the switches 217 and 218, 291 and 292 are DC power supply voltage supply devices, and 293 is a signal generator such as a rectangular wave forming the DC power supply device 225. The control device 203 causes the field effect transistors and transistors 281 and 282 to become intermittently conductive, thereby preventing the living body 223 from becoming electrically conductive.
DC voltage will also be applied intermittently to.

In addition, the field effect transistors 235 and 236 are made conductive so that the amplifiers 233 and 234 do not become saturated.
This is a block that controls non-conduction, and in this circuit example, it is composed of Re flip-flops. NOR gate 225
Input terminal 1 of is the S input terminal of the R-S flip-flop,
The input terminal 6 of the NOR gate 227 is connected to the R input terminal of the R-S flip-flop.

Here, the equivalent impedance 201 of the living body between the measurement points 220 and 222 on the living body surface is Z2o1. Furthermore, since the equivalent impedance 202 of the living body between the measurement points 221 and 222 on the living body surface is Z2o2, the increaser 233, 23
The output intermittent DC voltage of No. 4 will differ depending on the equivalent impedance of the living body.

That is, the equivalent impedance of the living body Z2o1. If one of Z2o2 is a good conductor, a difference will be recognized between the output levels of the amplifiers 233 and 234.Here, 292 is a DC power supply device that supplies DC voltage to the living body.

In the circuit diagram of FIG. 6, the case where 220 points are Ryodoraku points will be explained. Therefore, 1Z2o11〈1
It is Z2o21. Therefore, buffer amplifiers 231, 232
In this example, the input level of the DC intermittent signal to 231 is higher.

From the output DC intermittent signals of the multipliers 233 and 234, the DC component is removed by DC component removers 207 and 208, and the AC component is converted into a DC component by a rectifier or an integrator. In this circuit example, the DC component removal device is a capacitor 241,
It consists of 242.

Further, the conversion devices 209, 210 for converting AC components into DC components are replaced by operational amplifiers 247, 248, diodes 251, 252, .
253,254, resistance 243,244°249.250
．． Variable resistor 245, . 246. The variable resistors 245 and 246 are used to set the DC level of the arithmetic multipliers 247 and 248 to a desired value.

The output voltage of 247.248 is the comparison level setting device 211.
, 212 to an arbitrary level, and the comparator 21
6. In this example, the comparison level setting device 211 includes resistors 255, 256, 257°258 and variable resistor 2.
It consists of 59,260.

The input signals to the comparison device 261 are compared by the comparison device 261, and when the Ryodoraku detection side terminal 222 of the detection terminals 220 and 221 contacts the Ryodoraku point of the living body,
The comparator 2610 "+ side input level">"- side input level", the output level of the comparator 261 becomes the + side, the sound generating device 215 operates, and the sounding body 269 emits sound.

In addition, in the block diagram of FIG. 4 and the circuit diagram example of FIG.
0, the DC component is removed again, but the DC component removal device 2
It is also possible to eliminate the signals 07 and 208, smooth the DC intermittent signals input to the converters 209 and 210, and use them as output signals of the converters 209 and 210.

In the devices shown in Figures 3, 4, 5, and 6, the Ryodoraku side (acupoint side) and the non-Ryodoraku side (non-accupoint side) are compared and judged based on the DC level. However, the DC converter 20
It goes without saying that it is also possible to perform VF conversion, A/D conversion, and numerical comparison of the output DC voltage of 9,210.

Effects of the Invention As is clear from the above explanation, according to the present invention, the equivalent impedance of a living body can be stably detected without causing polarization on the skin surface of the living body, and highly reliable Ryodoraku. A detection device can be obtained.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing the contact points of the Ryodoraku detector with the human body.
FIG. 2 is an equivalent circuit diagram of the state shown in FIG. 1, FIG. 3 is a block diagram of a Ryodoraku detection device according to one embodiment of the present invention, and FIG. 4 is a block diagram of another embodiment of the present invention. , FIG. 5 is a block diagram showing a specific configuration of the device shown in FIG. 3, and FIG. 6 is a block diagram showing a specific configuration of the device shown in FIG. 4. 103... Signal generator, 113, 213...
... Comparison level judgment device, 120, 121, 220° 221 ... Detection terminal, 122, 222 ...
...Common terminal, 203...Control device, 217,
218... Switch, 220... Control device, 225... DC power supply device. Name of agent: Patent attorney Toshio Nakao and 1 other person @1
Figure 2

Claims (2)

[Claims] (1) A signal generator is provided with a common terminal and two detection terminals that are brought into contact with any skin surface of a living body, and supplies an alternating current signal to the common terminal; and a signal generator that supplies an alternating current signal to the common terminal; By a level detection device that compares the amount of electricity between detection terminals,
Ryodoraku detection device that detects Ryodoraku points in living organisms. (2) A DC power supply device that includes a common terminal and two detection terminals that are brought into contact with an arbitrary surface of a living body, and supplies a DC signal between the common terminal and the two detection terminals, and connects and disconnects the signal. A Ryodoraku detection device that detects a Ryodoraku point in a living body using a switch and a level detection device that compares the amount of current between the two detection terminals.