Accessory device, and system comrpising same for measuring biosignals

Abstract

Provided is a system for measuring biosignals, the system comprising: a bio-device inserted into the human body or attached to the skin to measure biosignals; and an accessory device for communicating with the bio-device and supplying power thereto, wherein the accessory device and bio-device are each provided with least one electrode for connecting to the human body, and transmit and receive electrical signals between each other using the human body as the medium.

Description

Accessory device and biosignal measurement system including the same

[0001] The present invention relates to power supply of a bio device for measuring bio-signals.

[0002] Bio-devices are applied to the human body for therapeutic or diagnostic purposes.

[0003] Bio-devices are designed to measure vital signs or inject drugs into the human body. Specific examples include wearable devices that come into contact with the human body, implantable devices that are surgically inserted into the body, and devices that are attached to the skin.

[0004] As prior art related to such bio-devices, Publication No. 20-2023-0001164 and Publication No. 20-2008-0000336 have been presented.

[0005] In the case of the bio-device presented in the prior art, a bio-sensor (or circuit) for measuring bio-signals by coming into contact with the user's body is basically provided, and in consideration of the convenience of measurement, it is provided in the form of a wireless patch (or wireless terminal).

[0006] At this time, in the case of bio-devices proposed to operate wirelessly, it is common to place a battery inside the bio-device and receive operating power from the built-in battery.

[0007] These prior technologies had the following problems:

[0008] First, because the design took into account the built-in battery space, there were many restrictions in the design and manufacturing as the size of the bio device and battery capacity had to be taken into consideration.

[0009] Second, when the built-in battery capacity is exhausted and it becomes difficult to supply sufficient power to the biosensor, it must be removed from the human body and placed in a separate charging case, or the charging cable must be connected and charged for a specified period of time before it can be reused. Therefore, the bio device cannot be used during the charging period.

[0010] In this case, for users requiring continuous monitoring of their bio-signals, important disease signs may be missed, making early disease prevention difficult. Therefore, the time spent without bio-devices can be directly linked to the user's life, and therefore, minimizing this time is crucial.

[0011] Third, some bio-devices (e.g., implantable bio-devices) are difficult to replace when the built-in battery capacity is completely depleted, so they must be purchased as new products and used, and the user must bear the full cost burden.

[0012] Fourth, the battery-embedded bio-device has a shorter battery life than the expected life of the sensors or circuits provided for measuring bio-signals within the bio-device due to the difficulty of charging and replacing the battery, resulting in waste.

[0013] Fifth, if the bio device is damaged, there is a possibility that the user's safety may be threatened as he or she may be exposed to hazardous chemicals contained in the built-in battery.

[0014] [Prior Art Literature]

[0015] [Patent Document]

[0016] (Patent Document 1) Publication of Utility Model No. 20-2023-0001164 (Application Date: December 1, 2021, “Portable Patch-Type Thermometer”)

[0017] (Patent Document 2) Publication of Utility Model No. 20-2008-0000336 (Application Date: March 4, 2008, “Portable Biometric Information Measurement Device”)

[0018] The present invention was conceived to solve the above-described problems and to secure freedom in design of a bio-device while extending its operating life.

[0019] In order to achieve this purpose, a bio-signal measurement system according to one embodiment of the present invention includes a bio-device for measuring a bio-signal by being inserted into a human body or attached to the skin; and an accessory device for communicating with the bio-device and supplying power to the bio-device; wherein the bio-device and the accessory device each have at least one electrode for connecting to the human body and can transmit / receive electrical signals between each other using the human body as a medium.

[0020] Here, the accessory device may include a first power supply unit charged with a DC power of a certain capacity; an AC converter unit for converting the DC power provided from the first power supply unit into AC power; a first data transmission / reception unit for generating a communication packet (hereinafter referred to as a “first communication packet”) for communicating with the bio-device and collecting the communication packet (hereinafter referred to as a “second communication packet”) transmitted from the bio-device; a first multiplexing unit for generating a combination signal by combining the AC power converted by the AC converter unit and the first communication packet; at least one electrode (hereinafter referred to as an “electrode of the accessory device”) for transmitting the combination signal to the bio-device or receiving the second communication packet transmitted from the bio-device; and a first integrated control unit for controlling each of the above-described components.

[0021] At this time, the accessory device further includes a gain control unit for controlling the gain of the combination signal; and the first integrated control unit can analyze the second communication packet and control the gain control unit so that the gain of the combination signal to be provided to the bio device is adjusted according to information about the gain of the combination signal previously provided to the bio device.

[0022] And, the bio device comprises: a measuring unit for measuring a bio signal; a second data transmitting / receiving unit for generating the second communication packet including measurement data for the bio signal measured by the measuring unit and collecting the first communication packet transmitted from the accessory device; a second power unit for converting AC power transmitted from the accessory device into DC power and supplying the converted DC power as power for operating each component; at least one electrode (hereinafter referred to as “electrode of the bio device”) for receiving a combination signal transmitted from the accessory device or transmitting the second communication packet to the accessory device; a second multiplexing unit for distinguishing AC power and the first communication packet among the combination signals received through the electrode of the bio device and providing them to the second power unit and the second data transmitting / receiving unit, respectively; And a second integrated control unit that controls each of the above-described configurations; wherein the second communication packet includes identification information of the bio device, and the second integrated control unit controls the second multiplexing unit so that the second communication packet is processed into a form that can be provided to the accessory device, and the second communication packet processed through the second multiplexing unit is transmitted through the electrode of the bio device and can be propagated to the electrode side of the accessory device through the human body.

[0023] Here, the bio-devices are provided in N (wherein, N is a natural number greater than or equal to 1), the accessory devices are provided in M ​​(wherein, M is a natural number greater than or equal to 1), and the N bio-devices receive power from the M accessory devices and can perform bidirectional communication between each other.

[0024] And, the above accessory device may be provided in a form in which at least a part thereof comes into contact with the skin and is detachable from the human body.

[0025] Meanwhile, an accessory device according to one embodiment of the present invention includes a power supply unit charged with a DC power of a certain capacity; an AC converter unit for converting the DC power provided from the power supply unit into AC power; a data transmission / reception unit for generating a communication packet (hereinafter referred to as a "first communication packet") for communicating with a bio-device for measuring a bio-signal, which is inserted into a human body or attached to the skin, and collecting the communication packet (hereinafter referred to as a "second communication packet") transmitted from the bio-device; a multiplexing unit for generating a combination signal by combining the AC power converted by the AC converter unit and the first communication packet; at least one electrode for transmitting the combination signal to the bio-device or receiving the second communication packet transmitted from the bio-device; and an integrated control unit for controlling each of the above components; wherein the combination signal can be transmitted to the bio-device through the electrode using the human body as a medium.

[0026] In addition, the accessory device proposed by the present invention further includes a gain control unit for controlling the gain of the combination signal; and the integrated control unit can analyze the second communication packet and control the gain control unit so that the gain of the combination signal to be provided to the bio device is adjusted according to information about the gain of the combination signal previously provided to the bio device.

[0027] As described above, according to the present invention, the following effects can be obtained.

[0028] First, power can be supplied between accessory devices and bio-devices by utilizing the human body as a medium, so there is no need to worry about batteries when designing bio-devices, which allows for minimizing their size and securing freedom of design.

[0029] Second, since it operates continuously by receiving power from at least one accessory device, the operating life of the bio device can be extended compared to conventional devices.

[0030] Third, as the operating life of bio-devices is extended, the problem of having to repurchase bio-devices when the battery life expires is resolved, and the cost burden on users can be reduced.

[0031] Fourth, even if the bio-device is damaged, it is safe from the dangers of many harmful chemicals contained in batteries because it does not contain batteries inside.

[0032] Fifth, since two-way data communication is possible between the accessory device for supplying power to the bio-device and the bio-device through the human body, the accessory device can be used as a data hub between an external device and the bio-device, while also facilitating control of the bio-device through the accessory device.

[0033] Figures 1 and 2 are drawings illustrating a biosignal measurement system according to one embodiment of the present invention.

[0034] Figure 3 is a block diagram schematically illustrating a bio-device according to one embodiment of the present invention.

[0035] Figure 4 is a block diagram briefly illustrating an accessory device according to one embodiment of the present invention.

[0036] FIG. 5 is a reference diagram illustrating a communication packet in a biosignal measurement system according to one embodiment of the present invention.

[0037] A preferred embodiment of the present invention will be described in more detail with reference to the attached drawings, but technical parts already known will be omitted or compressed for the sake of brevity.

[0038] It should be noted that references in this specification to “one” or “an” embodiment of the invention are not necessarily to the same embodiment, but rather mean at least one.

[0039] In the examples below, the terms first, second, etc. are not used in a limiting sense, but are used for the purpose of distinguishing one component from another.

[0040] In the examples below, singular expressions include plural expressions unless the context clearly indicates a different meaning.

[0041] In the examples below, terms such as “include” or “have” mean that a feature or component described in the specification is present, and do not preclude the possibility that one or more other features or components may be added.

[0042] Each configuration shown in the drawing is arbitrarily shown for convenience of explanation, and therefore the present invention is not necessarily limited to what is shown.

[0043] For reference, in addition to the conventional technology discussed in the background art, it is also possible to consider charging a bio-device applied to the human body using external radio waves or ultrasound, but in this case, the following problems exist.

[0044] First, since the bio device still needs to include a battery configuration for charging, its thickness inevitably increases, which could cause inconvenience to users due to its size.

[0045] Second, since radio waves or ultrasound waves of sufficient intensity to charge the power inside the bio-device must be accurately transmitted to the bio-device within a short period of time, it was difficult to ensure the stability of the body adjacent to the bio-device.

[0046] Accordingly, the inventor of the present invention proposed the present invention with a focus on improving the user's wearing comfort (or minimizing the foreign body sensation) and minimizing harmful effects on the human body.

[0047] Hereinafter, the present invention will be described in detail with reference to the drawings.

[0048] FIGS. 1 and 2 are drawings for explaining a biosignal measurement system according to one embodiment of the present invention, FIG. 3 is a block diagram briefly illustrating a bio device according to one embodiment of the present invention, and FIG. 4 is a block diagram briefly illustrating an accessory device according to one embodiment of the present invention.

[0049] Referring to FIGS. 1 to 4, a biosignal measurement system (10) according to one embodiment of the present invention includes a bio device (100) and an accessory device (200).

[0050] The bio device (100) is configured to be inserted into the human body or attached to the skin to measure biosignals.

[0051] A specific explanation regarding this will be discussed after describing the accessory device (200).

[0052] The accessory device (200) is configured to communicate with the bio device (100) and supply power to the bio device (100).

[0053] The accessory device (200) may include a first power supply unit (210), an AC converter unit (220), a first data transmission / reception unit (230), a first multiplexing unit (240), an electrode (250, hereinafter referred to as an 'electrode of the accessory device'), a gain control unit (260), and a first integrated control unit (270).

[0054] The first power supply unit (210) is configured to be charged with a DC power supply of a certain capacity.

[0055] For example, the first power supply unit (210) may be provided with a DC power supply device such as a battery.

[0056] The AC conversion unit (220) is configured to convert the DC power provided from the first power supply unit (210) into AC power.

[0057] At this time, the AC power converted through the AC converter (220) is provided to the bio device (100) through the human body and is used as power to operate the bio device (100).

[0058] The first data transmission and reception unit (230) generates a communication packet (hereinafter referred to as “first communication packet”) for communicating with the bio device (100) and collects a communication packet (hereinafter referred to as “second communication packet”) transmitted from the bio device (100).

[0059] That is, the first data transmission / reception unit (230) performs a data communication function between the bio device (100) and the accessory device (200).

[0060] The first multiplexing unit (240) generates a combined signal by combining the AC power converted by the AC conversion unit (220) and the first communication packet.

[0061] For example, the first multiplexing unit (240) may be provided as a multiplexer (e.g., MUX).

[0062] The electrode (250) of the accessory device is configured to transmit a combination signal to the bio device (100) or receive a second communication packet transmitted from the bio device (100).

[0063] At this time, the electrode (250) of the accessory device transmits power through the human body using one or two electrodes in contact with the human body.

[0064] For reference, the current provided from the accessory device (200) to the bio device (100) is preferably an AC power of 10 mA or less at 3 V. This is an extremely low power of 30 mW or less. In other words, the accessory device (200) supplies a weak current to the bio device (100) that is not harmful to the human body.

[0065] The gain control unit (260) is configured to control the gain of the combined signal.

[0066] For example, it can be provided with an automatic gain controller (AGC).

[0067] The first integrated control unit (270) controls each of the above-mentioned components.

[0068] For example, the first integrated control unit (270) can analyze the second communication packet and control the gain control unit (260) to adjust the gain of the combination signal provided to the bio device (100) based on information about the gain of the combination signal provided to the bio device (100).

[0069] To explain more specifically, if the data in the second communication packet includes a signal that the size of the combination signal such as power provided from the accessory device (200) to the bio device (100) communicating with the corresponding accessory device (200) is weak, the first integrated control unit (270) controls the gain control unit (260) to increase the gain of the combination signal so that the combination signal with the adjusted gain can be provided to the bio device (100) through the electrode (250) of the accessory device.

[0070] These accessory devices (200) may be provided as devices that can be attached to the human body, such as watches, wristbands, rings, necklaces, earrings, bracelets, glasses, and waist bands, but at least a portion of the devices may be provided as devices that can come into contact with the skin (e.g., wearable devices that come into contact with the human body).

[0071] In addition, it can be provided as a patch-type device that is fixed to the skin using a wide pad required for adhesion.

[0072] The purpose is to minimize discomfort during use by providing an accessory device (200) for supplying power to a bio device (100) in a form that can be easily worn in daily life.

[0073] For reference, the accessory device (200) is provided in a form attached or inserted into the human body, and can perform a data hub function of supplying power wirelessly through the human body and collecting and managing measurement data collected through data communication.

[0074] In addition, the accessory device (200) may further be equipped with a communication unit (not shown) capable of communicating with an external terminal, and the communication unit may provide measurement data on bio-signals that can diagnose the user's health to a neighboring external terminal through short-range communication such as BT or Wi-Fi.

[0075] Additionally, the accessory device (200) can be used in common and can be frequently replaced. If this accessory device (200) is lost in the future, it can be replaced with another accessory device, or power can be continuously supplied to the bio device (100) through another accessory device (200) worn by the user.

[0076] The aforementioned bio device (100) may include a measuring unit (110), a second data transmission / reception unit (120), a second power supply unit (130), an electrode (140, hereinafter referred to as “electrode of the bio device”), a second multiplexing unit (150), and a second control unit (160).

[0077] The measuring unit (110) measures biosignals.

[0078] This measuring unit (110) can be provided with a biosensor, circuit, etc. for measuring a biosignal.

[0079] The biosignal measured by the measuring unit (110) may be at least one of blood sugar, blood pressure, body temperature, heart rate, pulse, respiration, and oxygen saturation. The biosignal that the measuring unit (110) can measure is not limited thereto, and any biosignal that can be measured by the bio device (100) when positioned inside the human body or in contact with the skin may be included.

[0080] The second data transmission / reception unit (120) generates a second communication packet including measurement data for a biosignal measured from the measurement unit (110) and collects the first communication packet transmitted from the accessory device (200).

[0081] That is, the second data transmission and reception unit (120) performs the function of transmitting and receiving communication packets when exchanging electrical signals between the bio device (100) and the accessory device (200).

[0082] For reference, the second communication packet includes identification information of the bio device (100) along with measurement data.

[0083] The second power supply unit (130) converts the AC power transmitted from the accessory device (200) into DC power, and supplies the converted DC power as power for operating each component (e.g., the measuring unit, the second data transmission / reception unit, the electrodes of the bio device, the second multiplexing unit, and the second control unit).

[0084] That is, the second power source (130) performs a power receiving function that receives power through the human body using one or two electrodes (140) of a bio device in contact with the human body.

[0085] The bio device has at least one electrode (140) and is configured to receive a combination signal transmitted from an accessory device (200) or transmit a second communication packet to the accessory device (200).

[0086] The second multiplexing unit (150) distinguishes between AC power and the first communication packet among the combination signals received through the electrodes (140) of the bio device and provides them to the second power unit (130) and the second data transmission / reception unit, respectively.

[0087] Additionally, the second multiplexing unit (150) processes the second communication packet into a form that can be provided to the accessory device (200).

[0088] For example, the second multiplexing unit (150) can generate a processed signal by combining a second communication packet with a portion (a weak level of AC power) of the AC power supplied to the second power unit (130).

[0089] The second integrated control unit (160) controls each of the above-mentioned components (110, 120, 130, 140, 150).

[0090] For example, the second integrated control unit (160) can control the second multiplexing unit (150) so that the second communication packet is processed into a form that can be provided to the accessory device (200).

[0091] At this time, the second communication packet processed through the second multiplexing unit (150) can be transmitted through the electrode (140) of the bio device and propagated through the human body to the electrode (250) of the accessory device.

[0092] As a result, each of the above-described bio-device (100) and accessory device (200) has at least one electrode (140, 250) for connecting with the human body, and transmits / receives electrical signals between each other using the human body as a medium.

[0093] That is, the electrode (250) of the accessory device and the electrode (140) of the bio device are in contact with the skin, and not only two-way data communication between the accessory device (200) and the bio device (100) using the human body as a medium is performed, but also wireless power supply from the accessory device (200) to the bio device (100) is performed.

[0094] This bio device (100) can be operated by receiving power from an accessory device (200), and can be manufactured without a battery. In other words, it can be miniaturized compared to a conventional embedded bio device (100) and the degree of freedom in design can be improved.

[0095] If the bio device (100) is made of a circuit, it is possible to manufacture it not only in an ultra-thin form but also in a flexible form such as a flexibly deformable bandage.

[0096] In addition, since not only power supply but also device control and data collection functions are performed through the accessory device (200), components such as a means (display) for inputting control commands and outputting measurement data can also be omitted, so the bio device (100) can be further miniaturized.

[0097] Specific examples of bio-devices (100) that can be applied include wearable devices that come into contact with the human body (e.g., earrings, necklaces, bracelets, rings, etc.), implantable devices that are surgically inserted into the body, and devices that are attached to the skin (e.g., patch-type devices, biosensors, circuits, etc.).

[0098] Meanwhile, FIG. 2 illustrates a biosignal measurement system (10) according to one embodiment of the present invention.

[0099] Referring to FIG. 2, N bio devices (100) (where N is a natural number greater than or equal to 1) may be provided, and M accessory devices (200) (where M is a natural number greater than or equal to 1) may be provided.

[0100] At this time, N bio devices (100) receive power from M accessory devices (200) and can perform bidirectional communication between them.

[0101] That is, the bio device (100) and the accessory device (200) correspond to N:M and can constitute a biosignal measurement system (10).

[0102] For example, if the bio device (100) and the accessory device (200) are provided in a correspondence of N:M, but N < M, for example, if the number of accessory devices (200) is greater than the number of bio devices (100), when the power charged in one accessory device (200) is depleted, power can be continuously supplied from the other accessory device (200), so that stable operation of the bio device (100) can be possible.

[0103] Meanwhile, FIG. 5 is a reference diagram illustrating a communication packet in a biosignal measurement system according to one embodiment of the present invention.

[0104] Communication between the bio device (100) and the accessory device (200) can be implemented as bidirectional communication using serial communication.

[0105] At this time, the communication packets used for mutual communication are illustrated in Fig. 5.

[0106] Referring to Figure 5, the composition of a communication packet can be composed of STX, identifier, Length, Data, and ETX.

[0107] STX means the beginning of data.

[0108] An identifier is a unique ID of a device (biometric device or accessory device).

[0109] At this time, the identifier can have a size of 16 bits, and when communicating between the bio device (100) and the accessory device (200), the integrated control unit of each device can identify the type of the other device by checking the unique ID of the device.

[0110] Length defines the length of DATA and can have a size of 16 bits.

[0111] DATA is data generated by a bio device (100) or an accessory device (200).

[0112] For example, it may be measurement data measured by the bio device (100), a control command for controlling the operation of the bio device (100) provided from the accessory device (200) to the bio device (100), gain information of a combination signal provided to the bio device (100), etc.

[0113] ETX means end of data.

[0114] This is just an example, so the composition of the communication packet may vary depending on the implementation.

[0115] Referring to the configuration of the communication packet mentioned above, data for an identifier is necessarily included between the bio device (100) and the accessory device (200).

[0116] This is to identify the device in communication (or power supply) when communicating between multiple devices, and to ensure that the communication packet is accurately delivered to the target device.

[0117] For example, when one accessory device and two bio-devices (hereinafter referred to as “first bio-device” and “second bio-device”) are applied to a human body, the bio-signals measured by each of the first bio-device and the second bio-device may overlap or be different.

[0118] At this time, the accessory device (200) can analyze the communication packets sent by each device and distinguish and secure the measurement data provided from the first bio device and the measurement data provided from the second bio device.

[0119] If there are overlapping bio-signals among the bio-signals measured by the first bio-device and the second bio-device, the accessory device (200) can compare and analyze the corresponding measurements, consider the error range according to the previously stored measurement location and the meaningful measurement value for diagnosing the disease, and then examine whether there is an error in the values ​​measured from the two bio-devices.

[0120] To explain more specifically, if the measurement data for the overlapping bio-signals of the first bio-device and the second bio-device are different, the accessory device (200) examines the errors in the corresponding values, and if the measurement data measured from one of the bio-devices falls within an unacceptable error range and has a value that is meaningless for diagnosing a disease, the failure of the corresponding bio-device can be determined.

[0121] In this case, the accessory device (200) can output the judgment result regarding the failure to a display unit provided by the accessory device (200) or provide it in real time to an external device (e.g., a smartphone, tablet PC, desktop, bio-signal monitoring terminal, etc.).

[0122] As another example, when two accessory devices (hereinafter referred to as 'first accessory device' and 'second accessory device') and a single bio-device (100) are applied to the human body, both accessory devices may supply a small level of power to the single bio-device (100), but may also sequentially receive power from one of the accessory devices.

[0123] In this case, the bio device (100) is provided with identification IDs for all accessory devices that come into contact with the human body during initial operation, and can preferentially communicate with one of the accessory devices (e.g., the first accessory device) and receive power from the first accessory device.

[0124] A bio device (100) that operates by receiving power from a first accessory device can continuously receive power from another accessory device (e.g., a second accessory device) while communicating with the second accessory device and informing the second accessory device of the need for replacement or charging of the first accessory device when the power supply level falls below a preset level or when power supply is not provided.

[0125] The guidance provided from the bio device (100) is output to the display unit equipped in the second accessory device or provided in real time to an external device so that the user can check it.

[0126] That is, through communication between the accessory device (200) and the bio device (100), information about whether the bio device (100) is broken or whether the accessory device (200) needs to be replaced or charged can be provided to the user in real time through the accessory device (200), and the user who confirms this can quickly take the best possible action to ensure that the bio device (100) can continue to operate.

[0127] For reference, the communication speed can have a variable speed from 100 bps to 10 Mbps.

[0128] As a result, the biosignal measurement system (10) proposed by the present invention has many advantages in data collection and device control due to the two-way communication function between the bio device (100) and the accessory device (200) using the human body as a medium.

[0129] To explain more specifically, the multi-device communication and power supply function of N:M allows the bio-device (100) to be used for a long period of time without having to replace the bio-device (100) repeatedly or charge it after removal, and the convenience of use can be improved, such as easy integrated collection of data of the bio-devices (100) and control of the bio-device (100) through an accessory device (200).

[0130] As described above, the specific description of the present invention has been made by way of embodiments with reference to the drawings, but since the above-described embodiments have only described preferred examples of the present invention, the present invention should not be understood as being limited to the above-described embodiments, and the scope of the rights of the present invention should be understood by the claims described below and their equivalents.

Claims

1. A bio-device inserted into the human body or attached to the skin to measure bio-signals; and An accessory device for communicating with the bio device and supplying power to the bio device; The bio device and the accessory device each have at least one electrode for connecting to the human body, and are characterized in that they transmit / receive electrical signals between each other using the human body as a medium. Biosignal measurement system.

2. In paragraph 1, The above accessory device, A first power supply unit charged with a certain amount of direct current; An AC converter for converting the direct current power provided from the first power supply into alternating current power; A first data transmission / reception unit that generates a communication packet (hereinafter referred to as a “first communication packet”) for communicating with the bio device and collects a communication packet (hereinafter referred to as a “second communication packet”) transmitted from the bio device; A first multiplexing unit that generates a combined signal by combining the AC power converted in the above AC conversion unit and the first communication packet; At least one electrode (hereinafter referred to as an 'electrode of the accessory device') for transmitting the combination signal to the bio device or receiving a second communication packet transmitted from the bio device; and A first integrated control unit that controls each of the above-mentioned components; characterized by including Biosignal measurement system.

3. In paragraph 2, The above accessory device, Further comprising a gain control unit for controlling the gain of the above combination signal; The first integrated control unit analyzes the second communication packet and controls the gain control unit so that the gain of the combined signal to be provided to the bio device is adjusted according to information about the gain of the combined signal previously provided to the bio device. Biosignal measurement system.

4. In paragraph 2, The above bio device, A measuring unit for measuring biosignals; A second data transmission / reception unit that generates the second communication packet including measurement data for a biosignal measured from the above measurement unit and collects the first communication packet transmitted from the accessory device; A second power supply unit that converts AC power transmitted from the above accessory device into DC power and supplies the converted DC power as power for operating each component; At least one electrode (hereinafter referred to as “electrode of the bio device”) for receiving a combination signal transmitted from the accessory device or transmitting the second communication packet to the accessory device; A second multiplexing unit that distinguishes the AC power and the first communication packet among the combination signals received through the electrodes of the bio device and provides them to the second power unit and the second data transmission / reception unit, respectively; and A second integrated control unit that controls each of the above-mentioned configurations; The second communication packet includes identification information of the bio device, The second integrated control unit controls the second multiplexing unit so that the second communication packet is processed into a form that can be provided to the accessory device. The second communication packet processed through the second multiplexing unit is transmitted through the electrode of the bio device and propagated through the human body to the electrode side of the accessory device. Biosignal measurement system.

5. In paragraph 1, The above bio-device is provided with N (where N is a natural number greater than or equal to 1), and the above accessory device is provided with M (where M is a natural number greater than or equal to 1). The N bio devices are characterized in that they are powered by the M accessory devices and perform bidirectional communication between each other. Biosignal measurement system.

6. In paragraph 1, The above accessory device is characterized in that at least a part thereof is provided in a form that is in contact with the skin and detachable from the human body. Biosignal measurement system.

7. Power supply unit charged with a certain capacity of direct current; An AC converter for converting the direct current power provided from the above power supply into alternating current power; A data transmission and reception unit that generates a communication packet (hereinafter referred to as a “first communication packet”) for communicating with a bio-device inserted into a human body or attached to the skin for measuring bio-signals, and collects a communication packet (hereinafter referred to as a “second communication packet”) transmitted from the bio-device; A multiplexing unit that generates a combined signal by combining the AC power converted by the above AC conversion unit and the first communication packet; At least one electrode for transmitting the combination signal to the bio device or receiving a second communication packet transmitted from the bio device; and An integrated control unit that controls each of the above-mentioned components; The above combination signal is characterized in that it is transmitted to the bio device through the electrode using the human body as a medium. Accessory device.

8. In paragraph 7, Further comprising a gain control unit for controlling the gain of the above combination signal; The above integrated control unit is characterized in that it controls the gain control unit so that the gain of the combination signal to be provided to the bio device is adjusted according to information about the gain of the combination signal provided to the bio device by analyzing the second communication packet. Accessory device.

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