JP2017018205A - Biological sensor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress deterioration of a biological signal and reduce unpleasant feelings when a wearer wears a garment.SOLUTION: A biological sensor device includes: a reception unit part 1, and 2 attached to a garment 5 for detecting a biological signal of a wearer who wears the garment 5; a signal processing part 6 which is attached to the garment 5 and equipped with a processing circuit for processing the biological signal detected by the reception unit part 1 and 2; and wiring 3 and 4 attached to the garment 5 for transmitting the biological signal detected by the reception unit part 1 and 2 to the signal processing part 6. The reception unit part 1 and 2 includes: an electrode part for detecting the biological signal; and an amplifier circuit provided in the vicinity of the electrode part for amplifying and outputting the biological signal detected by the electrode part or a voltage follower circuit for outputting the biological signal detected by the electrode part at an amplification rate 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for collecting biological signals, and more particularly, to a biological sensor device that can suppress deterioration of biological signals and relieve discomfort when a wearer wears clothes.

  In recent years, there are an increasing number of small wearable biological signal receivers worn on the human body and used. As a wearable biological signal receiving device in which a sensor is attached to clothes, for example, a weak biological signal such as an electrocardiogram, a heartbeat, a myoelectricity, and a respiratory wave emitted by a living body is detected by a sensor built in the wearable biological signal receiving device. A device that converts a signal and transmits it to an external device by radio is known.

  In such a wearable biological signal receiving apparatus for continuous monitoring of biological signals, it is important that the biological signal receiving unit, the electronic circuit unit, and the power supply unit are integrated with clothing. In addition, it is also important that a weak biological signal detected by the biological signal receiving unit is guided to an electronic circuit without being affected by disturbance noise as much as possible and amplified by the electronic circuit. For example, Non-Patent Document 1 discloses a monitoring system in which a biological signal reception unit (electrode unit), wiring, amplification unit, signal processing unit, wireless transmission unit, and power supply unit are configured integrally with clothing.

Tim Morrison, Jason Silver, Brian Otis, “A Single-chip Encrypted Wireless 12-Lead ECG Smart Shirt for Continuous Health Monitoring”, 2014 Symposium on VLSI Circuits Digest of Technical Papers

  However, in the system disclosed in Non-Patent Document 1, a part that performs processing such as amplification of a biological signal and clothing are integrated, but a biological signal receiving unit (electrode unit), a signal amplification unit, Are connected by a wiring of about several tens of centimeters, and a weak signal is transmitted through this wiring, which causes a problem that a biological signal received by the signal amplification unit is deteriorated due to disturbance noise or the like.

  Also, if all systems from the reception of biological signals to wireless transmission are integrated, the size of the device will increase, causing discomfort such as the device hitting the wearer's body when the wearer wears clothes. There was a possibility.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a biosensor device capable of suppressing deterioration of a biosignal and alleviating discomfort when a wearer wears clothes. To do.

  The biosensor device of the present invention is attached to a garment and detects a biosignal of a wearer who wears the garment, and a process of processing a biosignal attached to the garment and detected by the receive unit. A signal processing unit including a circuit; and a first wiring that is attached to the clothes and that transmits a biological signal detected by the receiving unit unit to the signal processing unit, and the receiving unit unit detects the biological signal. An electrode unit and an amplification circuit provided in the vicinity of the electrode unit, which amplifies and outputs the biological signal detected by the electrode unit, or a voltage follower circuit that outputs the biological signal detected by the electrode unit at an amplification factor of 1. It is characterized by comprising.

Moreover, in one configuration example of the biosensor device of the present invention, the receiving unit unit further includes a first power supply unit that supplies power to the amplifier circuit or the voltage follower circuit, and the signal processing unit further includes: A second power supply unit that supplies power to the processing circuit is provided.
In one configuration example of the biosensor device of the present invention, at least one of the first and second power supply units is contactless from the secondary battery that supplies power to the circuit and the power supply device of the wireless power supply system. And a charging function unit for charging the secondary battery by receiving power and generating power by natural energy to charge the secondary battery.

In addition, one configuration example of the biosensor device of the present invention further includes a second wiring that is attached to the clothing and supplies power from the signal processing unit to the amplification circuit or the voltage follower circuit of the reception unit unit, The signal processing unit further includes a power supply unit that supplies power to the processing circuit in the signal processing unit and the reception unit unit.
Further, in one configuration example of the biosensor device of the present invention, the power supply unit is contactless from the processing circuit in the signal processing unit and the secondary battery that supplies power to the receiving unit unit, and the power supply device of the wireless power supply system. And a charging function unit for charging the secondary battery by receiving power and generating power by natural energy to charge the secondary battery.

In the configuration example of the biosensor device of the present invention, the signal processing unit further includes a capacitive coupling unit in an input unit for receiving a biosignal transmitted by the first wiring, and the receiving unit unit And the signal processing unit are connected by capacitive coupling.
Further, in one configuration example of the biosensor device of the present invention, the electrode unit includes a conductive electrode and an insulator film disposed between a wearer's body and the electrode, and the receiving unit The unit receives a biological signal emitted from the wearer by capacitive coupling in which the insulator film is interposed between the body of the wearer and the electrode.

  In the configuration example of the biosensor device of the present invention, the receiving unit section further includes a first engaging means provided on a surface of the receiving unit section facing the clothes, and the amplification unit. A first connector electrically connected to an output terminal of the circuit or the voltage follower circuit, and the signal processing unit is further provided on a surface of the signal processing unit on the side facing the clothes. Two engaging means and a second connector electrically connected to the input portion of the processing circuit, and the garment further includes a first connector on a surface facing the receiving unit portion. Third engaging means provided to engage with the engaging means, and fourth provided to engage with the second engaging means on a surface facing the signal processing unit. And electrically connected to one end of the first wiring, A third connector provided on the garment so as to be fitted with the first connector, and electrically connected to the other end of the first wiring, and provided on the garment so as to be fitted with the second connector. And a fourth connector.

  According to the present invention, by providing an amplifier circuit or a voltage follower circuit in the vicinity of the electrode unit of the receiving unit unit, a weak biological signal is deteriorated due to the wiring from the electrode unit to the amplifier circuit or the voltage follower circuit. This can be suppressed, and resistance to noise can be improved. Further, in the present invention, the biosensor device is divided into a receiving unit portion and a signal processing portion and distributed on the clothes, thereby making it possible to compare the individual systems as compared with the conventional case where all systems are integrated. The size of the device can be reduced, and the discomfort that the device hits the wearer's body when the wearer wears clothes can be alleviated.

  In the present invention, at least one of the first power supply unit of the reception unit unit and the second power supply unit of the signal processing unit receives power from the secondary battery and the power supply apparatus of the wireless power supply system in a contactless manner. By providing a charging function unit that charges the secondary battery or charges the secondary battery by generating electricity with natural energy, it is possible to realize power supply that does not require power supply replacement or power supply removal.

  In the present invention, the second wiring for supplying power from the signal processing unit to the amplifier circuit or the voltage follower circuit of the receiving unit unit is provided in the clothes, and the power source for supplying power to the processing circuit in the signal processing unit and the receiving unit unit By providing the unit in the signal processing unit, the power supply unit of the biosensor device can be shared by the reception unit unit and the signal processing unit, and only one power supply unit can be provided.

  In the present invention, the power supply unit of the signal processing unit receives power from the secondary battery and the power feeding device of the wireless power feeding system in a non-contact manner to charge the secondary battery, or generates power by using natural energy. By providing a charging function unit that charges the secondary battery, it is possible to realize power supply that does not require power supply replacement or power supply removal.

  In the present invention, the receiving unit unit and the signal processing unit are connected by capacitive coupling by providing a capacitive coupling unit at the input unit of the signal processing unit for receiving the biological signal transmitted by the first wiring. The adverse effect of the DC level fluctuation of the biological signal in the receiving unit on the reception of the biological signal in the signal processing unit can be suppressed.

  Further, in the present invention, by receiving a biological signal emitted from the wearer by capacitive coupling in which an insulator film is interposed between the wearer's body and the electrode, noise due to body movement or the like is mixed into the biological signal. The signal quality can be prevented from deteriorating.

  In the present invention, the receiving unit section is electrically connected to the first engaging means provided on the surface of the housing facing the clothes and the output terminal of the amplifier circuit or the voltage follower circuit. And a second connector electrically connected to the input portion of the processing circuit, the second engaging means provided on the surface of the housing facing the garment, and the signal processing portion. And a third engagement means provided on the garment on the surface facing the receiving unit portion to be engaged with the first engagement means, and the surface facing the signal processing portion In addition, a fourth engagement means provided to engage with the second engagement means, and one end of the first wiring are electrically connected and provided to be fitted to the first connector. The third connector is electrically connected to the other end of the first wiring and is provided so as to be fitted to the second connector. By providing the fourth connector, the receiving unit section and the signal processing section can be attached to and detached from the garment. When the garment is washed, the receiving unit section and the signal processing section can be detached from the garment, or the receiving unit section. When the signal processing unit deteriorates, it is possible to replace the deteriorated one with a new one.

It is a figure explaining the structure of the biosensor apparatus which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the detailed structure of the receiving unit part and signal processing part of the biosensor apparatus which concerns on the 1st Embodiment of this invention. It is a figure explaining the specific connection method of the receiving unit part and signal processing part of the biosensor apparatus which concerns on the 1st Embodiment of this invention. It is a figure explaining the structure of the biosensor apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows a state when the receiving unit and the signal processing part are removed from clothes in the 2nd Embodiment of this invention. It is a figure explaining the structure of the biosensor apparatus which concerns on the 3rd Embodiment of this invention. It is a block diagram which shows the detailed structure of the signal processing part of the biosensor apparatus which concerns on the 3rd Embodiment of this invention, and the capacity | capacitance coupling part in a signal processing part. It is a figure explaining the structure of the biosensor apparatus which concerns on the 4th Embodiment of this invention. It is a block diagram which shows the detailed structure of the receiving unit part and signal processing part of the biosensor apparatus which concern on the 4th Embodiment of this invention. It is a figure explaining the structure of the biosensor apparatus which concerns on the 5th Embodiment of this invention. It is a block diagram which shows the structure of the power supply part of the receiving unit part and signal processing part of the biosensor apparatus which concerns on the 5th Embodiment of this invention. It is sectional drawing which shows the structure of the electrode part of the receiving unit part which concerns on the 6th Embodiment of this invention.

  Hereinafter, the present invention will be described with reference to the drawings based on preferred embodiments, but the present invention is not limited to such embodiments.

[First Embodiment]
1A and 1B are views for explaining the configuration of the biosensor device according to the first embodiment of the present invention. FIG. 1A shows the front side of the garment, and FIG. B) shows the back side of the clothes.

  The biometric sensor device is attached to the garment 5 and receives the biosignals received by the wearer 5 wearing the garment 5 and the biometric signals detected by the receive unit 1 and 2 attached to the garment 5. A signal processing unit 6 that performs processing and transmits wirelessly to an external device (not shown), and wirings 3 and 4 that are attached to the clothes 5 and electrically connect the receiving unit units 1 and 2 and the signal processing unit 6 Is done.

  The receiving units 1 and 2 and the signal processor 6 are attached to the garment 5 in a distributed manner. In the example of FIGS. 1 (A) and 1 (B), the receiving units 1 and 2 are attached to the position of the garment 5 corresponding to the wearer's chest, and a signal is sent to the position of the garment 5 corresponding to the wearer's back. Although the process part 6 is attached, this invention is not restricted to arrangement | positioning as shown to FIG. 1 (A) and FIG. 1 (B).

  Moreover, you may provide the receiving unit parts 1 and 2 in any of the front side (side which does not contact a wearer's body) and the back side (side which contacts a wearer's body) of the clothes 5. FIG. However, in the case of an electrode of a type that detects the biological signal emitted from the wearer when the electrode parts of the receiving unit parts 1 and 2 described later are in contact with the wearer's body, at least the electrode part is exposed on the back side of the garment 5. Must be placed in contact with the wearer's body. Similarly, the wires 3 and 4 and the signal processing unit 6 may be provided on either the front side or the back side of the clothes 5.

  FIG. 2A is a block diagram illustrating a detailed configuration of the reception unit unit 1, and FIG. 2B is a block diagram illustrating a detailed configuration of the signal processing unit 6. As shown in FIG. 2 (A), the receiving unit 1 amplifies the biological signal detected by the electrode unit 10 and the electrode unit 10 made of a conductive material for detecting the biological signal emitted from the wearer, and outputs the amplified biological signal. Or an analog amplification unit 11 that outputs a biological signal at an amplification factor of 1, a power supply unit 12 that supplies power to the analog amplification unit 11, and a connection terminal unit 13 that outputs a biological signal amplified by the analog amplification unit 11. It has. Examples of the material of the power supply unit 10 include a conductive polymer.

2A, the analog amplifying unit 11 and the power supply unit 12 are housed in a housing made of an insulating material such as resin, and the electrode unit 10 and the connection terminal unit 13 are included in the housing. It is provided on the surface.
Examples of the biological signal detected by the electrode unit 10 include an electrocardiogram, a heartbeat, a myoelectric signal, and a respiratory wave.

  In addition to the amplifier circuit that amplifies the biological signal received from the electrode unit 10, the analog amplifying unit 11 may include a filter circuit that reduces disturbance noise included in the biological signal. In addition, the analog amplifying unit 11 may include a circuit that sets an amplification factor according to the strength of the biological signal received from the electrode unit 10. That is, the analog amplifying unit 11 may have a variable gain function that makes the strength of the biological signal output to the connection terminal unit 13 constant.

  In addition, even if the amplification factor is 1, the analog amplifier 11 is an impedance conversion circuit such as a voltage follower circuit that outputs a signal with a low output impedance so that the signal output to the connection terminal 13 is less susceptible to disturbance. May be provided.

The power supply unit 12 converts a primary battery or a rechargeable battery (not shown) and the voltage of the primary battery or the secondary battery into a power supply voltage required by the analog amplification unit 11 and supplies the power supply voltage to the analog amplification unit 11 Power supply circuit (not shown). However, the voltage conversion is performed according to the specification of the primary battery or the secondary battery and the specification of the analog amplifying unit 11, and is not an essential process.
2A shows the configuration of the reception unit unit 1, the configuration of the reception unit unit 2 is the same as that of the reception unit unit 1. FIG.

  As shown in FIG. 2B, the signal processing unit 6 includes analog input units 14 and 15 that are terminals connected to the receiving unit units 1 and 2 via wirings 3 and 4, and analog input units 14 and 15. An analog-to-digital (AD) conversion unit 16 that converts an analog biological signal input from the digital signal into a digital signal, and a digital signal processing unit 17 that performs various signal processing on the output digital signal of the AD conversion unit 16 A data storage unit 18 for storing data after signal processing by the digital signal processing unit 17, and a wireless transmission unit 19 for wirelessly transmitting data after signal processing by the digital signal processing unit 17 to an external device via an antenna (not shown); , An AD conversion unit 16, a digital signal processing unit 17, a data storage unit 18, and a power supply unit 20 that supplies power to the wireless transmission unit 19.

  The AD conversion unit 16, the digital signal processing unit 17, the data storage unit 18, and the wireless transmission unit 19 constitute a processing circuit that processes a biological signal. This processing circuit includes a program processing device such as an MCU (Micro Controller Unit), an RF (Radio Frequency) circuit, and the like.

  In the configuration of FIG. 2B, the AD conversion unit 16, the digital signal processing unit 17, the data storage unit 18, the wireless transmission unit 19, and the power supply unit 20 are provided inside a casing made of an insulating material such as resin. The analog input units 14 and 15 that are housed and connected to the receiving unit units 1 and 2 are provided on the surface of the casing.

  The power supply unit 20 requires a primary battery or a rechargeable secondary battery, and a voltage of the primary battery or the secondary battery, an AD conversion unit 16, a digital signal processing unit 17, a data storage unit 18, and a wireless transmission unit 19. And a power supply circuit that converts the power supply voltage and supplies it to the AD conversion unit 16, the digital signal processing unit 17, the data storage unit 18, and the wireless transmission unit 19. However, voltage conversion is not an essential process as in the case of the power supply unit 12.

  In the example of FIG. 2 (B), an example in which one analog input section 14 and 15 is provided for each of the two receiving unit sections 1 and 2 is shown. That is, as shown in FIG. 3, the connection terminal unit 13 of the reception unit unit 1 is connected to the analog input unit 15 of the signal processing unit 6 via the wiring 3, and the connection terminal unit 13 of the reception unit unit 2 is connected to the wiring 4 is connected to the analog input unit 14 of the signal processing unit 6.

  As described above, in the present embodiment, by providing the analog amplifying unit 11 and the power supply unit 12 in the vicinity of each electrode unit 10, the wiring from the electrode unit 10 to the analog amplifying unit 11 is routed. It is possible to suppress deterioration of a weak biological signal and improve resistance to noise.

  In the present embodiment, the biosensor device is divided into the receiving unit parts 1 and 2 and the signal processing part 6 and distributed on the clothing 5 so that all systems are arranged as in Non-Patent Document 1. Compared to the case of being integrated and attached to clothes, the size of each device can be reduced, and the discomfort that the device hits the wearer's body when the wearer wears the clothes 5 can be alleviated.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. 4 (A) and 4 (B) are diagrams illustrating the configuration of the biosensor device according to the second embodiment of the present invention, and are the same as those in FIGS. 1 (A) and 1 (B). Are denoted by the same reference numerals. FIG. 4 (A) shows the front side of the garment 5a, and FIG. 4 (B) shows the back side of the garment 5a.

  The receiving unit section 1a of the present embodiment is, for example, a hook-and-loop fastener provided on the surface of the housing of the receiving unit section 1a facing the garment 5a with respect to the receiving unit section 1 of the first embodiment. An engagement means 21 such as a snap button and a connector 24 electrically connected to the connection terminal portion 13 of the receiving unit portion 1a are added.

  The receiving unit 2a of the present embodiment is, for example, a hook-and-loop fastener provided on the surface of the housing of the receiving unit 2a facing the garment 5a with respect to the receiving unit 2 of the first embodiment. An engaging means 22 such as a snap button and a connector 25 electrically connected to the connection terminal portion 13 of the receiving unit portion 2a are added.

  The signal processing unit 6a of the present embodiment is different from the signal processing unit 6 of the first embodiment in, for example, a hook-and-loop fastener provided on the surface of the signal processing unit 6a on the side facing the garment 5a. An engagement means 23 such as a snap button, a connector 26 electrically connected to the analog input unit 14 of the signal processing unit 6a, and a connector 27 electrically connected to the analog input unit 15 of the signal processing unit 6a. It is added.

  5 (A) and 5 (B) are views showing a state when the receiving unit portions 1a and 2a and the signal processing unit 6a are removed from the garment 5a, and FIG. 5 (A) shows the front side of the garment 5a. FIG. 5B shows the back side of the garment 5a.

  The garment 5a of the present embodiment is provided so as to engage with the engagement means 21 on the surface of the garment 5a on the side facing the receiving unit 1a with respect to the garment 5 of the first embodiment. For example, an engagement means 51 such as a hook-and-loop fastener or a snap button, and a surface fastener or a snap button provided on the surface of the garment 5a facing the receiving unit 2a so as to engage with the engagement means 22 are provided. The engaging means 52, the engaging means 53 such as a hook-and-loop fastener and a snap button provided to engage with the engaging means 23 on the surface of the garment 5a facing the signal processing unit 6a, and the wiring 3 The connector 54 provided on the garment 5 a so as to be electrically connected to one end of the wiring 24 and fitted to the connector 24, and the garment 5 a so as to be electrically connected to one end of the wiring 4 and fitted with the connector 25. Connector 5, electrically connected to the other end of the wiring 4, and connected to the connector 56 provided on the garment 5 a so as to be engaged with the connector 26, and electrically connected to the other end of the wiring 3 and engaged with the connector 27. In this manner, a connector 57 provided on the clothes 5a is added.

  When attaching the receiving unit 1a to the garment 5a, the surface of the receiving unit 1a on which the engaging means 21 is provided and the garment 5a face each other, and the engaging means 21 and the engaging means 51 are engaged. At the same time, the connector 24 and the connector 54 may be fitted. Thereby, mechanical fixation and electrical connection of the receiving unit 1a can be realized. When removing the receiving unit 1a from the garment 5a, the connector 24 may be removed from the connector 54 of the garment 5a, and the receiving unit 1a may be peeled off from the garment 5a.

  Similarly, when attaching the receiving unit 2a to the garment 5a, the surface of the receiving unit 2a on which the engaging means 22 is provided and the garment 5a face each other, and the engaging means 22 and the engaging means 52 are connected. The connector 25 and the connector 55 may be engaged with each other. When removing the receiving unit 2a from the garment 5a, the connector 25 may be removed from the connector 55 of the garment 5a, and the receiving unit 2a may be peeled off from the garment 5a.

  When attaching the signal processing unit 6a to the garment 5a, the surface of the signal processing unit 6a provided with the engaging means 23 and the garment 5a face each other, and the engaging means 23 and the engaging means 53 are engaged. At the same time, the connector 26 and the connector 56 may be fitted together, and the connector 27 and the connector 57 may be fitted together. When removing the signal processing unit 6a from the garment 5a, the connectors 26 and 27 may be removed from the connectors 56 and 57 of the garment 5a, and the signal processing unit 6a may be peeled off from the garment 5a.

  If all systems from reception of biological signals to wireless transmission are integrated as in Non-Patent Document 1, when washing clothes, for example, components that cannot withstand washing such as electrodes and power supplies There was a problem that it was not possible to remove from the product or replace a deteriorated component.

  On the other hand, in the present embodiment, the receiving unit portions 1a and 2a and the signal processing unit 6a can be attached to and detached from the garment 5a. It is possible to remove the processing unit 6a from the clothes 5a, or to replace a deteriorated product with a new one when the receiving unit units 1a, 2a and the signal processing unit 6a are deteriorated.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. 6 (A) and 6 (B) are diagrams illustrating the configuration of the biosensor device according to the third embodiment of the present invention, and are the same as those in FIGS. 1 (A) and 1 (B). Are denoted by the same reference numerals. FIG. 6A shows the front side of the garment 5, and FIG. 6B shows the back side of the garment 5.

  The signal processing unit 6b according to the present embodiment is obtained by adding capacitive coupling units 30 and 31 to the signal processing unit 6 according to the first embodiment. In the biosensor device described in the first embodiment, since the receiving unit units 1 and 2 and the signal processing unit 6 have power supply units 12 and 20, respectively, the biosignals in the receiving unit units 1 and 2 are used. There is a possibility that the fluctuation of the DC level will adversely affect the reception of the biological signal in the signal processing unit 6. Therefore, in the present embodiment, it is possible to suppress such a problem by using capacitive coupling between the receiving unit units 1 and 2 and the signal processing unit 6b.

  FIG. 7A is a block diagram showing a detailed configuration of the signal processing unit 6b, and FIG. 7B is a block diagram showing a detailed configuration of the capacitive coupling unit 30, and FIG. 2A and FIG. The same reference numerals are given to the same components as in FIG. As shown in FIG. 7B, the capacitive coupling unit 30 has one end connected to the capacitor 32 connected to the analog input unit 14, one end connected to the positive side of the power source of the signal processing unit 6b, and the other end connected to the capacitor 32. A bias level setting element 33 such as a resistor connected to the other end of the signal, and a bias level such as a resistor connected to the negative electrode side of the power source of the signal processing unit 6 b and the other end connected to the other end of the capacitor 32. The setting element 34 includes a buffer circuit 50 (voltage follower circuit) whose input terminal is connected to the other end of the capacitor 32.

By the capacitor 32 and the bias level setting elements 33 and 34, the negative side (ground) of the power supply of the signal processing unit 6b itself is input to the analog input unit 14 of the signal processing unit 6b from the receiving unit unit 2 with the DC level as a reference. The DC level of the biological signal can be defined.
The output terminal of the buffer circuit 50 is connected to the first input terminal of the AD conversion unit 16.

  FIG. 7B shows the configuration of the capacitive coupling unit 30, but the configuration of the capacitive coupling unit 31 is the same as that of the capacitive coupling unit 30. The capacitor 32 of the capacitive coupling unit 31 is connected to the analog input unit 15. The output terminal of the buffer circuit 50 of the capacitive coupling unit 31 is connected to the second input terminal of the AD conversion unit 16. The configuration of the signal processing unit 6b other than the capacitive coupling units 30 and 31 is the same as that of the signal processing unit 6.

  The AD conversion unit 16 may have a simultaneous sampling function for a plurality of channels of two or more channels, or may have a sampling function for one channel. When the AD conversion unit 16 has a simultaneous sampling function for a plurality of channels, the biological signals from the receiving unit units 1 and 2 can be individually sampled simultaneously. When the AD conversion unit 16 has a sampling function for one channel, the biological signal from the reception unit units 1 and 2 is switched and sampled by the multiplexer inside the AD conversion unit 16, so that the two-channel sampling function is used. Although simultaneous sampling is not possible, the cost of the AD converter 16 can be reduced.

In this way, in the present embodiment, it is possible to suppress adverse effects of fluctuations in the DC level of the biological signal in the receiving units 1 and 2 on the reception of the biological signal in the signal processing unit 6.
In the present embodiment, an example is described in which the capacitive coupling units 30 and 31 are added to the signal processing unit 6 of the first embodiment. However, the capacitive coupling unit is added to the signal processing unit 6a of the second embodiment. 30 and 31 may be added.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described. 8 (A) and 8 (B) are diagrams illustrating the configuration of the biosensor device according to the fourth embodiment of the present invention, and the same configuration as FIGS. 1 (A) and 1 (B). Are denoted by the same reference numerals. 8A shows the front side of the garment 5, and FIG. 8B shows the back side of the garment 5. FIG. 9A is a block diagram showing a detailed configuration of the receiving unit section 1c of the present embodiment, and FIG. 9B is a block diagram showing a detailed configuration of the signal processing section 6c of the present embodiment. Yes, the same components as those in FIGS. 2A and 2B are denoted by the same reference numerals.

  The receiving unit 1c of this embodiment removes the power supply unit 12 from the receiving unit 1 of the first embodiment, and supplies power to the analog amplifying unit 11 of the receiving unit 1c instead of the power supply unit 12. A power input terminal 60 is newly added. The power input terminal 60 is electrically connected to the power terminal of the analog amplifying unit 11 of the receiving unit 1c.

  FIG. 9A shows the configuration of the reception unit unit 1c, but the configuration of the reception unit unit 2c is the same as that of the reception unit unit 1c. That is, the receiving unit 2c is obtained by removing the power supply unit 12 from the receiving unit 2 of the first embodiment and adding a power input terminal 60 for supplying power to the analog amplifying unit 11 of the receiving unit 2c. It is. The power input terminal 60 is electrically connected to the power terminal of the analog amplifying unit 11 of the receiving unit 2c.

  The signal processing unit 6c of the present embodiment includes a power output terminal 61 for supplying power to the analog amplification unit 11 of the reception unit unit 1c, and a reception unit to the signal processing unit 6 of the first embodiment. A power supply output terminal 62 for supplying power to the analog amplifying unit 11 of the unit 2c is added. The power supply output terminals 61 and 62 are electrically connected to the output terminal of the power supply unit 20.

  Wirings 35 and 36 are added to the clothes 5. One end of the wiring 35 attached to the garment 5 is connected to the power input terminal 60 of the receiving unit 1c, and the other end of the wiring 35 is connected to the power output terminal 61 of the signal processing unit 6c. One end of the wiring 36 attached to the clothes 5 is connected to the power input terminal 60 of the receiving unit 2c, and the other end of the wiring 36 is connected to the power output terminal 62 of the signal processing unit 6c.

  In the first to third embodiments, examples have been described in which the receiving unit units 1, 2, 1a, 2a and the signal processing units 6, 6a, 6b have power supply units 12, 20 individually. On the other hand, in the present embodiment, only the signal processing unit 6c has the power supply unit 20, and supplies power from the signal processing unit 6c to the receiving unit units 1c and 2c. Thereby, in this Embodiment, the power supply part of a biometric sensor apparatus can be shared by the receiving unit parts 1c and 2c and the signal processing part 6c, and can use only one power supply part.

In the present embodiment, the example in which sharing of the power supply unit is applied to the first embodiment has been described. However, the present invention may be applied to the second and third embodiments.
However, when applied to the second embodiment, the power supply unit 12 is removed from the receiving unit unit 1a and the power input terminal 60 for supplying power to the analog amplifying unit 11 of the receiving unit unit 1a, and the power supply It is necessary to add a connector electrically connected to the input terminal 60. Further, the power supply unit 12 is removed from the reception unit unit 2a, and a power input terminal 60 for supplying power to the analog amplification unit 11 of the reception unit unit 2a and a connector electrically connected to the power supply input terminal 60 are provided. Need to add.

  When applied to the second embodiment, the signal processing unit 6a is connected to the power output terminals 61 and 62, a connector electrically connected to the power output terminal 61, and the power output terminal 62 electrically. It is necessary to add a connector connected to.

  Furthermore, when applied to the second embodiment, the garment 5a is electrically connected to the garment 5a with one end of the wiring 35 and fitted to the connector of the power input terminal 60 of the receiving unit 1a. The connector provided on the garment 5a so as to be electrically connected to one end of the wiring 36 and the connector of the power input terminal 60 of the receiving unit 2a, and the other end of the wiring 35 are electrically connected Connected to the connector of the power output terminal 61 of the signal processing unit 6a and electrically connected to the other end of the wiring 36 and the connector provided on the clothing 5a, and the power output of the signal processing unit 6a It is necessary to add a connector provided on the garment 5a so as to be fitted to the connector of the terminal 62.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described. 10 (A) and 10 (B) are diagrams illustrating the configuration of the biosensor device according to the fifth embodiment of the present invention, and the same configuration as FIGS. 1 (A) and 1 (B). Are denoted by the same reference numerals. FIG. 10A shows the front side of the garment 5, and FIG. 10B shows the back side of the garment 5.

  The receiving unit 1d according to the present embodiment can charge the secondary battery by receiving power in a non-contact manner instead of the power supply 12 with respect to the receiving unit 1 according to the first embodiment. Alternatively, a power supply unit 40 that can generate power by natural energy and charge the secondary battery is provided.

  Similarly, the receiving unit 2d of the present embodiment receives power in a non-contact manner and charges the secondary battery, instead of the power supply unit 12, with respect to the receiving unit 2 of the first embodiment. It is possible to provide a power supply unit 41 capable of generating electric power by natural energy and charging a secondary battery.

  The signal processing unit 6d according to the present embodiment can charge the secondary battery by receiving power in a contactless manner instead of the power supply unit 20 with respect to the signal processing unit 6 according to the first embodiment. Alternatively, a power supply unit 42 capable of generating power by natural energy and charging the secondary battery is provided.

FIG. 11A is a block diagram showing the configuration of the power supply unit 40 of the receiving unit 1d, and FIG. 11B is a block diagram showing the configuration of the power supply unit 42 of the signal processing unit 6d.
The power supply unit 40 of the receiving unit 1d includes a secondary battery 400, a power supply circuit 401 that converts the voltage of the secondary battery 400 into a power supply voltage required by the analog amplification unit 11 and supplies the power supply voltage to the analog amplification unit 11, and an electromagnetic A power receiving circuit 402 of a known wireless power feeding system using an induction phenomenon or an electromagnetic resonance phenomenon, a power generation unit 403 that generates power by natural energy, and a secondary battery using power received by the power receiving circuit 402 or power generated by the power generation unit 403 And a charging circuit 404 for charging 400. The power receiving circuit 402, the power generation unit 403, and the charging circuit 404 constitute a charging function unit. Here, both the power receiving circuit 402 and the power generation unit 403 are provided, but only one of them may be provided.

  The power receiving circuit 402 is a circuit formed of elements such as a coil and a capacitor. Electric power can be transmitted to the power receiving circuit 402 in a non-contact manner from a power feeding device (not shown) of a known wireless power feeding system using an electromagnetic induction phenomenon or an electromagnetic resonance phenomenon.

As the power generation unit 403, a known silicon-based, compound-based, or organic solar cell can be used. As described in the first embodiment, the voltage conversion in the power supply circuit 401 is performed according to the specification of the secondary battery 400 and the specification of the analog amplification unit 11, and is not an essential process.
Although FIG. 11A shows the configuration of the power supply unit 40, the configuration of the power supply unit 41 is the same as that of the power supply unit 40.

  The power supply unit 42 of the signal processing unit 6d includes a secondary battery 420, and a power supply voltage required by the AD conversion unit 16, the digital signal processing unit 17, the data storage unit 18, and the wireless transmission unit 19 for the voltage of the secondary battery 420. A power supply circuit 421 that converts the signal into the AD converter 16, the digital signal processing unit 17, the data storage unit 18, and the wireless transmission unit 19, a power reception circuit 422 of a known wireless power feeding system, and power generation that generates power using natural energy 423 and a charging circuit 424 that charges the secondary battery 420 with the power received by the power receiving circuit 422 or the power generated by the power generation unit 423. The power receiving circuit 422, the power generation unit 423, and the charging circuit 424 constitute a charging function unit. As in the case of the power supply unit 40, only one of the power receiving circuit 422 and the power generation unit 423 may be provided.

  As in the case of the power reception circuit 402, power can be transmitted to the power reception circuit 422 in a non-contact manner from a power supply device (not shown) of a known wireless power supply system using an electromagnetic induction phenomenon or an electromagnetic resonance phenomenon. it can.

  As the power generation unit 423, a solar cell can be used as in the power generation unit 403. As described in the first embodiment, voltage conversion in the power supply circuit 421 is not an essential process.

  Thus, in the present embodiment, the secondary batteries 400 and 420 are charged by transmitting power from the power feeding device of the wireless power feeding system to the power supply units 40 to 42 of the receiving unit units 1d and 2d and the signal processing unit 6d in a non-contact manner, Since the secondary batteries 400 and 420 can be charged with the power generated by the power generation units 403 and 423, power supply that does not require power supply replacement or power supply removal can be realized.

  In the present embodiment, the power supply units 40 to 42 are described as examples applied to the first embodiment, but may be applied to the second to fourth embodiments. However, when applied to the fourth embodiment, it is needless to say that only the power supply unit 42 of the signal processing unit 6c is necessary and the power supply units 40 and 41 are unnecessary.

  In the present embodiment, the power supply units 40 to 42 are provided in both the reception unit units 1d and 2d and the signal processing unit 6d. However, the present invention is not limited to this, and the power supply unit is provided in the reception unit units 1d and 2d. 12, the power supply unit 42 may be provided only in the signal processing unit 6d, the power supply units 40 and 41 may be provided in the reception unit units 1d and 2d, and the power supply unit 20 may be provided in the signal processing unit 6d. May be.

[Sixth Embodiment]
Next, a sixth embodiment of the present invention will be described. FIG. 12 is a cross-sectional view showing the configuration of the electrode unit 10 of the receiving unit unit 1 according to the sixth embodiment of the present invention, and the same components as those in FIG. .

  The electrode unit 10 of the receiving unit 1 of the present embodiment includes an electrode 102 made of a metal, a conductive polymer, a conductive gel, or the like that is in contact with a living body as a wet electrode, and an electrode 102 and a wearer (living body) of clothes. The insulating film 101 is disposed between the body 100 and the body 100.

  In this way, by interposing the insulator film 101 between the wearer's body 100 and the electrode 102, the temporal change in the potential difference generated between the electrode 102 and the wearer's body 100 due to the wearer's sweat or the like can be reduced. Can be suppressed. In such a capacitive coupling method, the weak voltage appearing through the insulator film 101 is amplified by the analog amplifier 11. With the configuration of the electrode unit 10 according to the present embodiment, it is possible to suppress noise due to body movement and the like and deterioration of signal quality.

In FIG. 12, the configuration of the electrode unit 10 of the reception unit unit 1 is shown, but the configuration of the electrode unit 10 of the reception unit unit 2 is the same as that of the reception unit unit 1.
In addition, you may apply the structure of the electrode part 10 of this Embodiment to the 2nd-5th embodiment.

  The present invention can be applied to a wearable biological signal receiving apparatus worn on a human body or the like.

  1, 2, 1 a, 2 a, 1 c, 2 c, 1 d, 2 d... Receiving unit section, 3, 4... Wiring, 5, 5 a ... clothing, 6, 6 a, 6 b, 6 c, 6 d. , 11: Analog amplification unit, 12, 20, 40, 41, 42 ... Power supply unit, 13: Connection terminal unit, 14, 15 ... Analog input unit, 16 ... AD conversion unit, 17 ... Digital signal processing unit, 18 ... Data Accumulation unit, 19 ... wireless transmission unit, 21 to 23, 51 to 53 ... engagement means, 24 to 27, 54 to 57 ... connector, 30, 31 ... capacitive coupling unit, 32 ... capacitor, 33, 34 ... bias level setting 50, buffer circuit, 60 ... power input terminal, 61, 62 ... power output terminal, 100 ... wearer's body, 101 ... insulator film, 102 ... electrode, 400, 420 ... secondary battery, 401, 421 ... Power supply circuit 402, 422 ... Conductive circuit, 403,423 ... the power generation unit, 404,424 ... charging circuit.

Claims (8)

A receiving unit that is attached to clothes and detects a biological signal of a wearer wearing the clothes;
A signal processing unit that is attached to the garment and includes a processing circuit that processes a biological signal detected by the receiving unit;
A first wiring attached to the garment and sending a biological signal detected by the receiving unit to the signal processor;
The receiving unit section is
An electrode part for detecting a biological signal;
An amplification circuit that is provided in the vicinity of the electrode unit and that amplifies and outputs the biological signal detected by the electrode unit or a voltage follower circuit that outputs the biological signal detected by the electrode unit at an amplification factor of 1 is provided. A biosensor device. The biosensor device according to claim 1,
The receiving unit unit further includes a first power supply unit that supplies power to the amplifier circuit or the voltage follower circuit,
The biosensor device, wherein the signal processing unit further includes a second power supply unit that supplies power to the processing circuit. The biosensor device according to claim 2, wherein
At least one of the first and second power supply units is
A secondary battery for supplying power to each circuit;
A living body comprising: a charging function unit that receives power from a power feeding device of a wireless power feeding system in a non-contact manner to charge the secondary battery, or generates natural energy to charge the secondary battery. Sensor device. The biosensor device according to claim 1,
And a second wiring attached to the garment for supplying power from the signal processing unit to the amplification circuit or the voltage follower circuit of the reception unit unit,
The biometric sensor device, wherein the signal processing unit further includes a power supply unit that supplies power to the processing circuit in the signal processing unit and the receiving unit unit. The biosensor device according to claim 4, wherein
The power supply unit is
A secondary battery for supplying power to the processing circuit in the signal processing unit and the receiving unit;
A living body comprising: a charging function unit that receives power from a power feeding device of a wireless power feeding system in a non-contact manner to charge the secondary battery, or generates natural energy to charge the secondary battery. Sensor device. The biosensor device according to any one of claims 1 to 5,
The signal processing unit further includes a capacitive coupling unit in an input unit for receiving a biological signal transmitted by the first wiring,
The biological sensor device, wherein the receiving unit and the signal processing unit are connected by capacitive coupling. The biosensor device according to any one of claims 1 to 6,
The electrode portion is composed of a conductive electrode and an insulator film disposed between a wearer's body and the electrode,
The biosensor device characterized in that the receiving unit receives a biosignal emitted from the wearer by capacitive coupling in which the insulator film is interposed between the wearer's body and the electrode. The biosensor device according to claim 1,
The receiving unit section is
Furthermore, the first engagement means provided on the surface of the receiving unit section facing the clothes,
A first connector electrically connected to an output terminal of the amplifier circuit or the voltage follower circuit;
The signal processing unit
Furthermore, the second engagement means provided on the surface of the signal processing unit on the side facing the clothes,
A second connector electrically connected to the input of the processing circuit;
The clothes are
And a third engaging means provided on the surface facing the receiving unit portion so as to engage with the first engaging means,
A fourth engagement means provided on the surface facing the signal processing section so as to engage with the second engagement means;
A third connector electrically connected to one end of the first wiring and provided on the garment so as to mate with the first connector;
A biosensor device, comprising: a fourth connector electrically connected to the other end of the first wiring and provided on a garment so as to be fitted to the second connector.

Images