JP6915830B2 - Sensor device, insurance card, membership card - Google Patents

Description

The present invention relates to a sensor device for acquiring biological information and biological motion information, a health insurance card, and a membership card.

Patent Document 1 is disclosed as a technique for acquiring portable biological information. The patent document 1 shows a body fat scale, and the fingers of both hands are applied to the contacts provided on the surface of the housing of the body fat scale, and the contact between the contacts (between the fingers of one hand and the fingers of the other hand). The fat percentage can be obtained by the impedance.

Japanese Unexamined Patent Publication No. 11-70091

The above-mentioned technique of Patent Document 1 cannot locally measure the presence of body fat in the body. Then, there is a demand for a sensor device capable of easily acquiring local biological information and motion information of the living body in a living body, and an insurance card or membership card using the sensor device.

Therefore, an object of the present invention is to provide a sensor device, a health insurance card, and a membership card that solve the above-mentioned problems.

According to the first aspect of the present invention, the sensor device is provided with an electronic circuit provided on any of the card forming sheets and an electronic circuit provided on any of the card forming sheets by laminating a plurality of card forming sheets. It is provided with at least a pair of electrodes for current output and electrodes for voltage detection, and senses biological information.

The sensor device described above includes a plurality of pairs of electrodes specified as the current output electrode and the voltage detection electrode.

In the above-mentioned sensor device, the electronic circuit is based on an impedance value calculated based on a voltage value obtained by a pair of selected voltage detection electrodes and a current value output between the selected current output electrodes. The processing related to the biological information is performed.

In the above-mentioned sensor device, the electronic circuit acquires an impedance value of a living body based on an inter-electrode voltage acquired from the voltage detection electrode based on a current output from the current output electrode, and based on the impedance value. , Detects the state of the local region of the living body.

In the above-mentioned sensor device, the electronic circuit specifies which of a plurality of different biometric information is detected, and the electronic circuit detects the current output electrode and voltage according to the specified biometric information. A pair of electrodes is selected, and the electronic circuit is based on an impedance value calculated based on the voltage value obtained by the selected pair of voltage detection electrodes and the current value output between the selected current output electrodes. Then, the processing related to the biological information is performed.

The above-mentioned sensor device is provided with a card forming sheet provided with the current output electrode and the voltage detection electrode, and a shield electrode that gives the same potential as the potential generated in the current output electrode and the voltage detection electrode. The card forming sheet is laminated.

In the sensor device described above, the biometric information is at least fat.

In the sensor device described above, the biometric information is at least the skin condition.

In the above-mentioned sensor device, the electronic circuit includes a temperature measuring unit, and the biological information is at least the temperature of the living body.

In the above-mentioned sensor device, the biological information is at least the blood flow state of the living body.

In the above-mentioned sensor device, the biological information is at least the state of ventilation of the lungs due to respiration by the living body.

In the above-mentioned sensor device, the biological information is at least the heartbeat state of the living body.

The above-mentioned sensor device includes a sound detection device on any of the card forming sheets.

In the above-mentioned sensor device, the electronic circuit acquires motion information of a living body.

Further, according to the second aspect of the present invention, the insurance card includes the above-mentioned sensor device.

Further, according to the second aspect of the present invention, the membership card includes the above sensor device.

According to the present invention, it is possible to easily acquire local biological information and biological motion information in a living body.

It is the first figure which shows the sensor apparatus by one Embodiment of this invention. It is the 2nd figure which shows the sensor device by one Embodiment of this invention. It is a third figure which shows the sensor apparatus by one Embodiment of this invention. FIG. 4 is a fourth diagram showing a sensor device according to an embodiment of the present invention. It is a figure which shows the 1st example of the electrode by one Embodiment of this invention. It is a figure which shows the 2nd example of the electrode by one Embodiment of this invention. It is a figure which shows the 3rd example of the electrode by one Embodiment of this invention. It is a figure which shows the 4th example of the electrode by one Embodiment of this invention. It is a figure which shows the 5th example of the electrode by one Embodiment of this invention. It is a figure which shows the active shield circuit by one Embodiment of this invention. It is the first figure which shows the electronic circuit by one Embodiment of this invention. It is a figure which shows the processing flow of the sensor apparatus by one Embodiment of this invention. It is a second figure which shows the electronic circuit by one Embodiment of this invention. It is a figure which shows the structure of the condenser microphone by one Embodiment of this invention. It is a figure which shows the sixth example of the electrode by one Embodiment of this invention.

Hereinafter, the sensor device according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a first diagram showing a sensor device according to the present embodiment.
As shown in FIG. 1, the sensor device 1 is a device formed by stacking a plurality of thin card forming sheets. For example, the sensor device 1 has a rectangular card-shaped size by stacking a plurality of card forming sheets. More specifically, in the sensor device 1, at least the first sheet 10 which is a thin card forming sheet and the second sheet 20 which is another thin card forming sheet are laminated. Hereinafter, the card forming sheet will be simply referred to as a sheet. The sensor device shown in FIG. 1 is provided with an electronic circuit on the first sheet 10. The sensor device 1 is provided with a plurality of electrodes 21 on the second sheet 20. The electrode 21 is used as a current output electrode and a voltage detection electrode. Each electrode 21 and the electronic circuit 100 are connected via a circuit 11 (signal line) in which a pattern is printed on each sheet and a signal line such as a via or a through hole connecting the layers. The electrode 21 has a long rectangular shape parallel to the short side of the card forming sheet in the second sheet 20, as shown in FIG. 1, for example.

FIG. 2 is a second diagram showing a sensor device according to the present embodiment.
The sensor device 1 may be configured by laminating a plurality of thin sheets having a larger thickness. In the sensor device 1 shown in FIG. 2, a first intermediate sheet 30 and a second intermediate sheet 40 are provided between the first sheet 10 and the second sheet 20 shown in FIG. The first intermediate sheet 30 is a ground layer. The second intermediate sheet 40 is provided with an active shield.

The first sheet 10, the second sheet 20, the first intermediate sheet 30, and the second intermediate sheet 40 shown in FIGS. 1 and 2 may have flexibility, respectively. For example, each sheet is made of a material such as a film. The sensor device 1 is integrally formed by laminating each of these sheets. Therefore, the sensor device 1 also has flexibility. In the sensor device 1, each sheet may be laminated and integrally formed, and the outer side thereof may be covered with an exterior film. That is, the sensor device 1 may have a configuration (non-contact) in which the electrode 21 and the living body do not come into direct contact with each other by being covered with an insulator such as an exterior film. Each sheet may be bonded and laminated with an adhesive or the like. The first sheet 10, the second sheet 20, the first intermediate sheet 30, and the second intermediate sheet 40 do not have to have flexibility.

Although not shown in FIGS. 1 and 2, any sheet has a power supply unit. Specifically, the power supply unit 60 is a battery. The battery also has a thin sheet shape. In addition, the sensor device 1 is provided with a display unit 50, a communication device 51, an acceleration sensor 106, a sound detection device (microphone, etc.) 108, a SpO ₂ measurement sensor 109 for measuring oxygen saturation, a GPS positioning sensor 110, a piezoelectric speaker 111, and the like. May be done. Specifically, the display unit 50 is an organic liquid crystal display. The display unit 50 is a device that displays information on the surface of the sensor device 1. Further, the communication device 51, the acceleration sensor 106, and the sound detection device 108 may be configured as a circuit printed on a flexible film (see FIG. 12). The SpO ₂ measurement sensor 109 is a sensor capable of measuring oxygen saturation and pulse rate in blood by receiving light emitted from an infrared LED or a red LED with a phototransistor.
The communication device 51 may be provided with a communication function for accessing the mobile phone communication network and a communication function such as Wi-Fi for communicating with the base station device. The position of the sensor device 1 can be specified by the server device or the like that has communicated with the sensor device 1 by the communication device 51, the GPS positioning sensor 110, or the like. Further, if the card-type sensor device 1 is in a wallet or the like, the location of the wallet can be specified by the server device. Further, if the piezoelectric speaker 111 is attached to the sensor device 1, a sound transmission signal is transmitted from the server device, and the sensor device 1 that receives the signal can ring and control the piezoelectric speaker 111 to notify the position.

FIG. 3 is a third diagram showing the sensor device.
By stacking the sheets shown in FIGS. 1 and 2, the sensor device 1 as shown in FIG. 3 is configured. In addition to the display unit 50, the power supply unit 60, and the like, the sensor device 1 may be provided with an input button or the like on the surface.

FIG. 4 is a fourth diagram showing a sensor device.
Since the sensor device 1 is formed by laminating a sheet-like film on which a pattern is printed in a flexible circuit, the sensor device 1 itself may have flexibility as shown in FIG.

FIG. 5A is a diagram showing a first example of an electrode.
FIG. 5B is a diagram showing a second example of the electrode.
A plurality of electrodes 21 are provided on the second sheet 20 of the sensor device 1. Each electrode is used by the electronic circuit 100 as a voltage detection electrode or a current output electrode. For example, the electronic circuit 100 uses a set of two electrodes located at the end of the six electrodes 21 provided on the second sheet 20 as current output electrodes. Further, the electronic circuit 100 may use a pair or a plurality of pairs of four electrodes located between the pair of the current output electrode and the specified electrode 21 as the voltage detection electrode. FIG. 5A shows a state in which the six electrodes 21 are arranged in parallel, but more electrodes 21 may be provided.

The six electrodes shown in FIG. 5A are referred to as electrodes 21a, 21b, 21c, 21d, 21e, and 21f from the left. Local parts of the user's body to be measured include skin from the outside, subcutaneous fat on the inside of the skin, muscle on the inside of the subcutaneous fat, and visceral fat on the inside.

When the current source 110 passes a current between the current output electrodes 21c and 21d, a high current density distribution occurs in the range of the electric lines of force E1 as shown in FIG. 5B (a). When a current is passed between the current output electrodes 21c and 21d, the depth of the current density distribution is about d1 because the distance between the electrodes is short.
When the current source 110 passes a current between the current output electrodes 21b and 21e, a high current density distribution occurs in the range of the electric lines of force E2 as shown in FIG. 5B (b). When a current is passed between the current output electrodes 21b and 21e, the distance between the electrodes is wider than that in FIG. 5B (a), so that the depth of the current density distribution is d2 (> d1).
When the current source 110 passes a current between the current output electrodes 21a and 21f, a high current density distribution occurs in the range of the electric lines of force E3 as shown in FIG. 5B (c). When a current is passed between the current output electrodes 21a and 21f, the distance between the electrodes is wider than in FIGS. 5B (a) and 5B, so that the depth of the current density distribution is d3 (>d2>. It becomes d1).

When the spacing between the current output electrodes 21 through which current flows is changed as shown in FIG. 5B, when the spacing between the current output electrodes 21 is narrow, the region of the high current density distribution becomes narrow and the density of the shallow portion becomes high. .. This means that a lot of information in a shallow area is detected. On the other hand, when the distance between the current output electrodes 21 through which the current flows is wide, a high current density distribution is generated up to the deep part, whereby the information in the deep part can be detected as the potential difference on the surface, and the information in the deep part can be detected. .. Therefore, when detecting information in a shallow region from the skin of the body, two electrodes 21 for current output having a short interval as shown in FIG. 5B (a) are used as electrodes for passing a current, and the region deeper than the skin of the body is detected. When detecting information, two electrodes 21 for current output having a wider interval as shown in FIGS. 5B (b) and 5B (c) are used as electrodes for passing current, depending on the depth.
Further, by changing the frequency from low frequency to high frequency, the current density distribution may be further changed to measure the electrical impedance characteristic obtained from the biological structure.

The user who uses the sensor device 1 presses the surface of the sensor device 1 on the second sheet 20 side against a local portion of the body to be measured. The electronic circuit 100 of the sensor device 1 uses, for example, the electrodes 21a and 21f located at the outermost ends as electrodes for current output. Further, in this case, the electronic circuit 100 uses the electrodes 21b, 21c, 21d, 21e located in the middle as the voltage detection electrodes. The electronic circuit 100 controls the current source 110 to pass a current between the current output electrodes 21a and 21f. The current source 110 is set to pass an alternating current having a predetermined frequency and current value according to the biological information to be measured. For example, the electronic circuit 100 controls the current source 110 so as to output an alternating current having a higher frequency when acquiring information in a region having a deeper internal direction d in the body such as fat or muscle. The electronic circuit 100 specifies a set of voltage detection electrodes from the electrodes 21 according to the biological information to be measured, measures the voltage, and calculates an impedance value based on the voltage value and the current value. For example, the electronic circuit 100 uses a pair of electrodes 21c and 21d located on the center side of the current output electrodes 21a and 21f as voltage detection electrodes when acquiring information on the skin at a shallow position. Alternatively, the electronic circuit 100 uses a pair of electrodes 21b and 21e located far from the center between the current output electrodes 21a and 21f as voltage detection electrodes when acquiring information such as fat in a deeper direction. do. The detected voltage signal is amplified by the amplifiers 121 and 122. In using the electrodes, the electronic circuit 100 also performs control such as switching a switch in the circuit so that a current flows through the electrodes determined to be used. The electronic circuit 100 measures an impedance value of a predetermined region of a living body in a local portion based on the measured voltage value and the output current value. In FIG. 5A, 121 and 122 indicate an amplifier. The amplifier amplifies the signal value of the voltage between the electrodes 21 used as the voltage detection electrodes.

In the example of FIG. 5A, the pair of the two outermost electrodes 21a and 21f of each electrode is used as a current output electrode, and the four electrodes 21b, 21c, 21d and 21f inside the electrodes are used as voltage detection electrodes. However, for example, the electrodes 21b and 21e may be used as current output electrodes, and the electrodes 21c and 21d inside the electrodes may be used as voltage detection electrodes.

FIG. 6 is a diagram showing a third example of the electrode.
The plurality of electrodes 61 provided in the sensor device 1 may be printed on the second sheet 20 in an annular shape. FIG. 6 shows a state in which four annular electrodes 61 having different radii are concentrically printed on the second sheet 20. It is assumed that each electrode 61 is referred to as 61a, 61b, 61c, 61d in ascending order of radius. For example, in these electrodes 61, the electronic circuit 100 uses the central annular electrode 61a and the re-outer electrode 61d as current output electrodes. Further, the electronic circuit 100 uses a pair of inner annular electrodes 61d and 61c as voltage detection electrodes. FIG. 6 shows a state in which four annular electrodes having different radii are printed concentrically on the second sheet 20, but even if more annular electrodes are printed concentrically. good. Similar to the example shown in FIG. 5A, the electronic circuit 100 controls the current source 110 so that an alternating current flows between the electrodes 61a and 61d used as current output electrodes. The electronic circuit 100 detects the voltage value between the voltage detection electrodes 61b and 61c and measures the impedance value.
In the example of FIG. 6, four annular electrodes are concentrically printed on the second sheet 20, but more annular electrodes are concentrically printed on the second sheet 20. May be done. When many annular electrodes are printed, if the pair of electrodes 61 located closer to the center is used as the voltage detection electrode, it is based on the impedance value calculated for the state of the living body in the local shallow region. Can be detected. Further, if the electrode 61 located farther from the center is used as the voltage detection electrode, the state of the living body in the deeper part can be detected based on the calculated impedance value.

FIG. 7 is a diagram showing a fourth example of the electrode.
A plurality of small electrodes may be arranged on the second sheet 20 in a plane shape on the sheet surface. The electronic circuit 100 selects an electrode to be used as a current output electrode and a voltage detection electrode from among the plurality of small electrodes (point electrodes). Each of the squares shown in FIG. 7 indicates an electrode.
As shown in FIG. 7, the electronic circuit 100 identifies the four electrodes 71 located in the region 71a as current output electrodes.
Further, the electronic circuit 100 identifies each electrode 71 located in the region 71b and each electrode 71 located on a rectangular side having them as one side as voltage detection electrodes.
Further, the electronic circuit 100 identifies each electrode 71 located in the region 71c and each electrode 71 located on a rectangular side having them as one side as voltage detection electrodes.
Further, the electronic circuit 100 identifies each electrode 71 located in the region 71d and each electrode 71 located on a rectangular side having them as one side as current output electrodes.
Each of the identified electrodes is painted black and shown in FIG. In this case, the current is output and the voltage value is measured in the same manner as in the case described with reference to FIG. 5A.
In FIG. 7, the point electrode specified as the current output electrode or the voltage detection electrode is shown in black.
By specifying the electrode to be used as the current output electrode and the voltage detection electrode as shown in FIG. 7, it is possible to perform the same sensing of biological information as the electrode shown in FIG.
Although the electrodes are shown as squares in FIG. 7, any shape such as a circle, an ellipse, a rectangle, a rhombus, or a polygon may be used.

FIG. 8 is a diagram showing a fifth example of the electrode.
In the fifth example of the electrodes, as in the fourth example, a plurality of small electrodes are arranged on the second sheet 20 so as to be arranged in a plane on the sheet surface. The electronic circuit 100 selects an electrode to be used as a current output electrode and a voltage detection electrode from among the plurality of small electrodes.
Specifically, as shown in FIG. 8, the electronic circuit 100 specifies each electrode located in the regions 81a and 81f as a current output electrode.
Further, the electronic circuit 100 identifies either the electrodes located in the two regions 81b and 81e or the electrodes located in the two regions 81c and 81d as voltage detection electrodes.
By specifying the electrodes to be used as the current output electrode and the voltage detection electrode as shown in FIG. 8, it is possible to perform the same sensing of biological information as the electrodes shown in FIGS. 2 and 5A.

FIG. 9 is a diagram showing an active shield circuit.
As shown in FIG. 2, the second intermediate sheet 40 is laminated on the upper layer of the second sheet 20. A shield electrode 41 is arranged on the second intermediate sheet 40 at a position corresponding to each electrode 21 of the second sheet 20 (see FIG. 2).
The active shield circuit shown in FIG. 9 applies a voltage having the same phase as the voltage applied to each electrode 21 used as the current output electrode or the voltage detection electrode to the shield electrode 41 provided at the opposite position. The active shield circuit shown in FIG. 9 is an example of a circuit in which a voltage having the same phase is applied to the electrode 21 and the shield electrode 41.
By controlling the voltage of the electrode 21 and the shield electrode 41 to the same voltage, most of the energy of the current output from the electrode 21 is radiated toward the inside of the living body on the opposite side of the shield electrode 41. It should be noted that from FIG. 2, the front surface and the back surface of the sensor device 1 are used so that the sensor device 1 is used so that the living body comes into contact with the surface opposite to the shield electrode 41 in the radiation direction of most of the current output from the electrode 21. Information that shows this is printed. Alternatively, when the electrode 21 is visible, the surface is used so as to come into contact with a living body. Then, the voltage measuring unit 112 uses a value measured by the current measuring unit 111 of the electronic circuit 100 and a signal obtained from another electrode 21 (voltage detecting electrode) located between the electrodes 21 shown in FIG. Since the impedance value is calculated using the measured voltage value, it is possible to calculate the impedance value with high accuracy.
Even if an insulator such as a film is further arranged at the bottom of the second sheet, the skin can be obtained by combining only the high-frequency current or the high-frequency current with each shield electrode installed on the third sheet and the active shield circuit 41. Subcutaneous biological information can be measured even if the electrodes do not come into direct contact with each other. This makes it possible to measure the bioimpedance even if the sensor device 1 is surrounded by an insulator such as a laminated film. As a result, it becomes possible to incorporate various biometric information monitor functions into the basic functions of cards such as employee ID cards, membership cards, and health insurance cards.

FIG. 10 is a first diagram showing an electronic circuit.
The electronic circuit 100 includes circuits corresponding to each functional unit of the impedance acquisition unit 101, the biological information processing unit 102, the electrode selection unit 103, the control unit 104, the current source 110, the current measurement unit 111, and the voltage measurement unit 112. .. The CPU in the electronic circuit 100 performs an operation corresponding to one or more functional units of the impedance acquisition unit 101, the bio-information processing unit 102, and the control unit 104 by executing a program. It may exhibit the same function as each functional unit.

The impedance acquisition unit 101 calculates the impedance by a known calculation method based on the signals input from the current measurement unit 111 and the voltage measurement unit 112.
The biometric information processing unit 102 performs processing related to biometric information based on information input from the impedance acquisition unit 101 and the like.
The electrode selection unit 103 selects the electrode to be used from the electrode 21 and the shield electrode 41 according to the control of the control unit 104.
The control unit 104 identifies the biometric information to be processed among the biometric information, generates various control information, and gives an instruction to other functional units.
The electronic circuit 100 is connected to a display unit 50, a communication device 51, an input unit 52, and the like. The display unit 50 displays the input information such as biological information. The communication device 51 communicates with an external device such as a mobile terminal. The input unit 52 is a user interface, and may be, for example, a button or a switch. If the display unit 50 is a liquid crystal display, the display unit 50 and the input unit 52 may be an integrated interface device. In addition, the electronic circuit 100 may include a temperature measurement function, a time count function, a sound output function, an acceleration detection function, and the like.

FIG. 11 is a diagram showing a processing flow of the sensor device.
Next, the processing flow of the sensor device 1 will be described step by step.
The user operates the input unit to activate the sensor device 1. For example, operate a button to turn on the power. Then, the control unit 104 is activated (step S101), and the display information is output to the display unit 50. For example, the biometric information selection screen is output. The user operates the input unit 52 to select predetermined biometric information on the selection information selection screen and input a decision instruction. Then, the control unit 104 performs control corresponding to the biometric information that has received the instruction (step S102). Specifically, the electrodes 21 and shield electrodes 41 to be used are determined, and a command signal is output to the electrode selection unit 103. The electrode selection unit 103 switches the circuit so as to select an electrode according to the command signal acquired from the control unit 104 (step S103). Further, the control unit 104 instructs to control the sound output circuit to notify the start of measurement. As a result, sound is emitted from the sound output circuit. The user presses the surface of the second sheet 20 side against the local portion of the body to be measured when the sound is heard. As a result, the electrode 21 comes into contact with a local portion of the living body. Since the current output from the electrode 21 is a high-frequency current, it can be measured even from the top of clothes.

The voltage measuring unit 112 outputs a signal of the measured voltage value to the impedance acquisition unit 101 based on the contact of the local portion or the like. Further, the current measuring unit 111 outputs a signal of the measured current value to the impedance acquisition unit 101. The impedance acquisition unit 101 calculates the impedance value of the measurement target region of the living body using the input voltage value and current value (step S104). The impedance acquisition unit 101 outputs the calculated impedance value to the biometric information processing unit 102. The biometric information processing unit 102 inputs the type of biometric information selected by the user from the control unit 104. The biometric information 102 performs processing according to the type of biometric information based on the impedance value and the type of biometric information selected by the user (step S105). The biological information processing unit 102 outputs the processing result to the display unit 50 (step S106). Further, the biometric information processing unit 102 may output the processing result to the communication device 51. In this case, the communication device 51 transmits the processing result information to the external device instructed by the control unit 104.

The type of biological information that can be selected by the user here may be, for example, fat thickness, skin water content, skin spots, pulse rate, lung ventilation volume, heart rate, and the like. The type of these biological information can be calculated from the measured impedance value. As a method for calculating biological information using these impedance values, a known technique may be used.

For example, the biometric information processing unit 102 calculates the fat thickness of a local portion using a known technique based on the impedance value.
Further, the biometric information processing unit 102 calculates the skin water content (skin condition) of the local portion using a known technique based on the impedance value.
Further, the biometric information processing unit 102 calculates the presence or absence of skin spots (skin condition) in a local region using a known technique based on the impedance value.
Further, the biological information processing unit 102 calculates the pulse rate (blood flow state) using a known technique based on the impedance value.
Further, the biometric information processing unit 102 calculates the ventilation volume (ventilation state) of the lungs using a known technique based on the impedance value.
Further, the biometric information processing unit 102 calculates the heart rate of the heart using a known technique based on the impedance value.
Further, the biological information processing unit 102 calculates the muscle mass / composition using a known technique based on the impedance value.

FIG. 12 is a second diagram showing an electronic circuit.
In addition to the configuration shown in FIG. 10, the electronic circuit 100 includes a temperature measuring unit 105, an acceleration sensor 106, a light emitting element 107 (LED or the like), a sound detection device (microphone) 108, a SpO ₂ measuring sensor 109, and a GPS positioning sensor 110. Any one or more of the piezoelectric speakers 111 may be provided. An electronic circuit 100 is provided in the temperature measuring unit 105, the acceleration sensor 106, the light emitting element 107 (LED or the like), the sound detection device (microphone) 108, the SpO ₂ measuring sensor 109, the GPS positioning sensor 110, the piezoelectric speaker 111, and the like. It may be provided on the same sheet as the sheet, or may be provided on any of the sheets that are laminated to form the sensor device 1.
The control unit 104 is a temperature measurement unit 105, an acceleration sensor 106, a light emitting element 107, a sound detection device (microphone) 108, a SpO ₂ measurement sensor 109, and a GPS positioning sensor based on an instruction from the user input via the input unit 52. Information using any one or more functions of 110 and the piezoelectric speaker 111 may be acquired.

(Temperature measurement function)
For example, suppose that the user selects the temperature measurement function after the sensor device 1 is activated. In this case, the control unit 104 operates the temperature measurement unit 105. The temperature measuring unit 105 includes a temperature measuring circuit having a resistor such as a thermistor. The temperature measuring unit 105 detects a change in electrical resistance with respect to a temperature change in the thermistor, and detects the temperature. A known technique may be used for this temperature measurement method. The temperature measuring unit 105 outputs the detected temperature to the control unit 104. The control unit 104 outputs the temperature to the display unit 50 or the communication device 51. The display unit 50 displays the temperature. Alternatively, the communication device 51 may transmit temperature information to an external device.

(Sleep apnea syndrome judgment function)
Further, it is assumed that the user selects the sleep apnea syndrome (SAS) determination function after the sensor device 1 is activated. In this case, the control unit 104 operates the acceleration sensor 106 and the sound detection device 108. As the sound detection device 108, a condenser microphone may be used as the microphone. The control unit 104 outputs the acceleration value (motion information) output from the acceleration sensor 106 and the voice information acquired from the sound detection device 108 to the biometric information processing unit 102. The biometric information processing unit 102 records the acceleration value according to the passage of time and the voice information in a memory or the like. The user's sleeping acceleration and voice information are recorded in the memory. The voice information is, for example, information on the sound of snoring. Since the sensor device 1 is a card type, the user can sleep with the sensor device 1 in the chest pocket. The biometric information processing unit 102 may analyze the presence or absence of SAS by using the acceleration and voice information according to the time series recorded in the memories. A known technique may be used for this analysis. The control unit 104 may measure the ventilation volume of the user's lungs in the SAS determination. In this case, the control unit 104 further selects the electrode selection unit 103 to specify the electrode 21 and the shield electrode 41. If the sensor device 1 is attached near the chest, such as when it is placed in the chest pocket, the ventilation volume can be measured from the impedance value. It can be determined that the respiration is stopped when the fluctuation of the increase / decrease is small according to the increase / decrease of the ventilation volume. The biometric information processing unit 102 can detect the time based on the time counting function. Then, for example, when it is detected that a predetermined time in the morning has been reached, the SAS determination may be analyzed. Further, the biometric information processing unit 102 detects the movement of the user based on the acceleration value obtained from the acceleration sensor 106, and determines that the user has woken up when the walking time continues for a predetermined time (10 seconds or the like). do. Then, the bio-information processing unit 102 may analyze the SAS determination when the user wakes up. The bio-information processing unit 102 may transmit the information of the SAS determination result and the measurement result stored in the memory to the external device via the communication device 51. Alternatively, the bio-information processing unit 102 may output the result of the SAS determination to the display unit 50.

The control unit 104 may detect the trunk direction based on the acceleration information obtained from the acceleration sensor 106. The trunk direction is, for example, a direction perpendicular to the surface of the card-type sensor device 1. If this vertical direction indicates the opposite direction of the gravitational direction, it can be determined that the body is facing the ceiling direction. The control unit 104 measures the frequency of turning over by detecting the direction of the trunk. The frequency of turning over can be detected as the frequency of turning over, for example, the number of times the acceleration obtained by the acceleration sensor 106 indicates a predetermined value threshold value or more per unit time. The control unit 104 may further use the frequency of turning over to analyze the SAS determination. Based on the change in orientation (angle with respect to the vertical, etc.) obtained by the accelerometer 106, the frequency of turning over according to the rotation of the body from the position where the body is lying upward may be determined. When the sleep is light, the frequency of turning over is high, and when the frequency is high, the SAS determination can be made based on the influence. The movement of the thorax can also be determined from the value of the acceleration obtained by the acceleration sensor 106.

FIG. 13 is a diagram showing a configuration of a condenser microphone.
In the condenser microphone described above, as shown in FIG. 13, an exterior film F is provided on the two electrodes A and B, and is based on the vibration of the air layer S between the exterior film (diagram) and the electrodes. The structure may be such that sound is detected. The configuration of the sound detection device 108 may be another configuration. As the condenser microphone, a known ultra-small silicon microphone or a MEMS microphone may be used.

(Life tag function)
It is assumed that the user selects the life tag function after the sensor device 1 is activated. The user puts the sensor device 1 in a chest pocket or the like. The control unit 104 performs control corresponding to the life tag function that receives the instruction. Specifically, the control unit 104 controls the acquisition of the ventilation volume of the lungs and the acquisition control of the heart rate. The control unit 104 alternately performs the acquisition control of the ventilation volume and the acquisition control of the heart rate. Further, these controls may be performed at predetermined intervals such as 10-minute intervals. The control unit 104 determines the electrode 21 and the shield electrode 41 in each control, and outputs a command signal to the electrode selection unit 103. The electrode selection unit 103 switches the circuit so as to select an electrode according to the command signal acquired from the control unit 104.

While the life tag function is being controlled, the voltage measuring unit 112 outputs a signal of the measured voltage value to the impedance acquisition unit 101. Further, the current measuring unit 111 outputs a signal of the measured current value to the impedance acquisition unit 101. The impedance acquisition unit 101 calculates the impedance value of the measurement target region of the living body using the input voltage value and current value. The impedance acquisition unit 101 outputs the calculated impedance value to the biometric information processing unit 102. The biometric information processing unit 102 inputs information indicating a life tag function selected by the user from the control unit 104. The biological information 102 alternately measures the ventilation volume and the heart rate under the control of the control unit 104 based on the impedance value and the information indicating the life tag function selected by the user. The biological information processing unit 102 outputs the processing result to the display unit 50. Further, the biometric information processing unit 102 may output the processing result to the communication device 51. In this case, the communication device 51 transmits the processing result information to the external device instructed by the control unit 104. When an abnormality is detected, such as when it is determined that breathing has stopped or the heartbeat has stopped, the biometric information processing unit 102 may transmit the processing result information as emergency information to a predetermined destination. .. The sensor device 1 has a GPS function, and the location information may be included in the emergency information. The predetermined destination may be, for example, a communication device managed by an administration such as a security company or the Fire and Disaster Management Agency.

FIG. 14 is a diagram showing a sixth example of the electrode.
As shown in FIG. 14, the second sheet 20 described with reference to FIGS. 1 and 2 may have a structure in which two layers of sheets (20a, 20b) are laminated. In this case, the sheet 20a is provided with the electrode 21a1 and the sheet 20b is provided with the electrode 21a2. The electrodes 21a1 and 21a2 are provided at corresponding positions on the respective sheets. Further, the area of the electrode 21b1 is wider than the area of the electrode 21a1, and each electrode is arranged on the sheet so that the electrode 21a1 is located in the center of the electrode 21b1 when the electrode 20b side is viewed from the electrode 20a side. (FIGS. 14 (A) and 14 (B)). 14 (C) shows an equivalent circuit when a current is passed between the electrodes 21a1, 21b1 shown in FIGS. 14 (A) and 14 (B). By passing a current between the electrodes 21a1 and 21b1, the electric field spreads convexly in the region of the electrode 21a1 opposite to the electrode 21b1 as shown in FIG. 14D (shaded area of FIG. 14D). ). That is, when the region of the electrode 21a1 opposite to the electrode 21b1 is a living body, the energy of the electric current propagates deeper into the living body by adopting the electrode structure as shown in FIG. This makes it possible to measure the voltage at a deeper position in the internal direction of the living body.
Further, the active shield circuit of FIG. 9 may be used to realize higher sensitivity measurement.

The electronic circuit of the sensor device 1 may include a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Then, the processing of the sensor device 1 may be performed by the CPU executing the program.

On the surface of the sensor device 1 in which a plurality of sheets shown in FIG. 3 are laminated and integrated, face information such as an insurance card or a membership card may be printed. As a result, the sensor device 1 used as a health insurance card can be used as a device for acquiring the above-mentioned biological information as well as being able to receive medical treatment by the health insurance card. Further, the sensor device 1 used as a membership card can also be used as a device for acquiring the above-mentioned biological information.

The program may be transmitted from a computer system in which this program is stored in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting a program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Further, the above program may be for realizing a part of the above-mentioned functions. Further, a so-called difference file (difference program) may be used, which can realize the above-mentioned functions in combination with a program already recorded in the computer system.

1 ... Sensor device 10 ... First sheet 20 ... Second sheet 21 ... Electrodes (current output electrode, voltage detection electrode)
30 ... First intermediate sheet 40 ... Second intermediate sheet 41 ... Shield electrode 50 ... Display unit 51 ... Communication device 52 ... Input unit 60 ... Power supply unit 100 ... Electronic circuit 101: Impedance acquisition unit 102: Biometric information processing unit 103: Electrode selection unit 104: Control unit 105: Temperature measurement unit 106: Accelerometer 107: Light emitting element (LED)
108 ... Sound detection device 110 ... Current source 111 ... Current measurement unit 112 ... Voltage measurement unit

Claims (19)

Multiple card forming sheets are stacked,
An electronic circuit provided on any of the card forming sheets and
At least a pair of current output electrodes and voltage detection electrodes provided on any of the card forming sheets are provided.
The card forming sheet provided with the current output electrode and the voltage detecting electrode, and the card forming sheet provided with a shield electrode giving the same potential as the potential generated in the current output electrode and the voltage detecting electrode. Are stacked ,
A sensor device that senses biological information based on an impedance value calculated by a signal acquired by the electronic circuit using the current output electrode and the voltage detection electrode. The sensor device according to claim 1, further comprising a plurality of pairs of electrodes specified as the current output electrode and the voltage detection electrode. Said electronic circuit based on the impedance value calculated based on the current value output pair between a voltage value obtained said selected current output electrodes by the voltage detection electrodes selected, processing relating to the biometric information The sensor device according to claim 1 or 2. The electronic circuit obtains the impedance values of the living body on the basis of the inter-electrode voltage obtained output the current from the voltage detection electrode from the current output electrode, based on the impedance value, the biological local region The sensor device according to claim 3, which detects a state. The electronic circuit identifies which of a plurality of different biometric information is to be detected.
The electronic circuit selects a pair of the current output electrode and the voltage detection electrode according to the specified biological information.
Said electronic circuit based on the impedance value calculated based on the current value output pair between a voltage value obtained said selected current output electrodes by the voltage detection electrodes selected, processing relating to the biometric information The sensor device according to any one of claims 1 to 4. The sensor device according to any one of claims 1 to 5, wherein the biological information is at least fat. The sensor device according to any one of claims 1 to 5, wherein the biological information is at least a skin condition. The electronic circuit Ru further comprising a temperature measuring unit for measuring the temperature of a living body as other biological information,
The sensor device according to any one of claims 1 to 5. The sensor device according to any one of claims 1 to 5, wherein the biological information is at least a blood flow state of a living body. The sensor device according to any one of claims 1 to 5, wherein the biological information is at least a state of ventilation of the lungs by respiration. The sensor device according to any one of claims 1 to 5, wherein the biological information is at least a heartbeat state of a living body. The sensor device according to any one of claims 1 to 5, wherein a sound detection device is provided on any one of the card forming sheets. The sensor device according to any one of claims 1 to 12, wherein the electronic circuit further includes a sensor that acquires motion information of a living body. The electronic circuit further comprises a GPS positioning sensor.
The sensor device according to any one of claims 1 to 13, wherein the position information of the own device is detected by the GPS positioning sensor. The electronic circuit Ru further comprising a SpO ₂ measurement sensor for measuring the oxygen saturation of the other biological information,
The sensor device according to any one of claims 1 to 14. The electronic circuit includes an accelerometer and
The sensor device according to any one of claims 1 to 15, wherein the acceleration of the own device is detected by the acceleration sensor. The sensor device according to any one of claims 1 to 16, further comprising a communication device for communicating information with an external device. An insurance card provided with the sensor device according to any one of claims 1 to 17. A membership card provided with the sensor device according to any one of claims 1 to 17.

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