CN107374625B - Active lattice type flexible electrode pasting device - Google Patents

Active lattice type flexible electrode pasting device Download PDF

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Publication number
CN107374625B
CN107374625B CN201710463797.2A CN201710463797A CN107374625B CN 107374625 B CN107374625 B CN 107374625B CN 201710463797 A CN201710463797 A CN 201710463797A CN 107374625 B CN107374625 B CN 107374625B
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flexible
electrode
module
circuit board
disc
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CN107374625A (en
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赵翠莲
费森杰
柳叶潇
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/296—Bioelectric electrodes therefor specially adapted for particular uses for electromyography [EMG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/389—Electromyography [EMG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/043—Arrangements of multiple sensors of the same type in a linear array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array

Abstract

The invention discloses an active dot-matrix flexible electrode pasting device, which is applied to the technical field of human body surface electrophysiological signal acquisition in the field of medical health. The device of the invention integrates the flexible dry electrode module, the signal acquisition circuit system and the accessory components into a patch with viscosity. The flexible dry electrode module is in direct contact with the surface of a human body to collect myoelectric signals of the human body, impedance matching is achieved through the voltage following circuit, the myoelectric signals after impedance matching are subjected to amplification filtering and A/D conversion processing through the signal collecting circuit system, and finally the myoelectric signals are transmitted to the client through the wireless communication module. The device has the characteristics of convenience in wearing and softness, is suitable for long-term use for 24 hours every day, and meets the requirements of human-computer interaction for rehabilitation, diseases and the like. The invention adopts a dot-matrix electrode arrangement mode to collect the electrophysiological signals of the muscle group parts with irregular or smaller muscle fiber trends, and can realize multidimensional differential calculation to improve the spatial filtering effect.

Description

Active lattice type flexible electrode pasting device
Technical Field
The invention relates to an electrophysiological signal acquisition device, in particular to an electromyographic signal acquisition device, which is applied to the technical field of medical and health detection instruments.
Background
Electromyographic signals are widely applied to patient monitoring and health examination in hospitals and families, and the electromyographic signals are usually acquired by wet electrodes, but the electrodes are not suitable for the requirements of human-computer interaction such as long-term rehabilitation, diagnosis and treatment and the like in 24 hours every day. The dry electrode can generate direct current polarization voltage of hundreds of millivolts when contacting with the skin of a human body, if the direct current bias can not be eliminated, operational amplifier overload can be caused, and signals can not be effectively amplified, so that the active design of the electrode is adopted, namely the signals are directly preprocessed before entering an amplifier, and the collection quality of the electromyographic signals can be effectively improved.
Compared with a hard material electrode, the material with higher mechanical flexibility is more suitable for various curved skin surfaces, and the adoption of the multi-channel high-density electromyographic electrode can effectively improve the discrimination of the Movement Unit Action Potential (MUAP) of the surface electromyographic signal.
The human body electromyographic signals are weak electrical signals which are easily interfered by the outside, and different electrode differential structures between the electrodes have different spatial filtering effects. The difference of the included angles between the electrode arrangement direction and the muscle fiber trend can cause the collected myoelectric signals to be slightly different, and the common electrodes are placed according to the muscle fiber trend, but when facing a complex muscle group with uncertain muscle fiber trend, it is necessary to design a myoelectric electrode structure capable of measuring the trend of multidimensional muscle fibers.
In the traditional myoelectricity monitor, all hardware devices are mainly connected through communication cables, an operating platform of the traditional myoelectricity monitor is also based on a wired device, and the whole device is large in size, so that the usable range of the traditional myoelectricity monitor is greatly limited and inconvenient to move. In recent years, wearable medical products which are developed rapidly are ideal products for making up for the defects, electrodes which are designed in a patch mode can be hidden under clothes for use, daily movement or movement cannot be interfered, and recorded data are accurate. This brings about a problem that the flexible substrate material and the hard active circuit are contradictory to each other.
In recent years, some related patents related to myoelectricity detection also appear, and chinese patent CN103393420 discloses a "high-density active flexible electrode array and a signal conditioning circuit thereof" and introduces designed active flexible array electrodes and signal conditioning circuits, but the arrangement mode of the electrodes of the patent presents a matrix type, when facing a complex muscle group, the spatial filtering effect of myoelectricity signals is poor, in addition, the area of an acquisition circuit is too large, the data transmission between the signals and an upper computer is inconvenient, and the wearable monitoring is not suitable. The foreign patent WO2011070403 discloses an "a drive active bio-signal electrode with an n hybrid-inorganic interface material", and introduces an active electrode, wherein the electrode material adopts a novel material combining organic and inorganic materials, the active circuit adopts a Flexible Printed Circuit Board (FPCB) technology, but the electrode only measures a single-electrode signal. US8818482 discloses an electrode patch monitor device and introduces a flexible electrode using screen printing process, however, the electrode still uses passive design, is easily interfered when collecting signals, and has better detection effect for some specific muscle groups, but still has certain use limitation.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to overcome the defects in the prior art and provide an active dot-matrix flexible electrode pasting device, a dot-matrix electrode arrangement difference mode is adopted to improve the collection quality of electromyographic signals, the active electrodes are designed by adopting a flexible printing electronic process through the dot-matrix electrode arrangement and multi-dimensional difference mode, and the flexible active electrodes, a collection circuit and an accessory component are packaged into a small patch-type shape, so that the problem of filtering caused by deviation of the electrode pasting direction is effectively solved.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
the utility model provides an active dot-matrix flexible electrode pastes device, mainly comprises flexible dry electrode module, signal acquisition circuitry and accessory subassembly, specifically is:
the flexible dry electrode module is in a thin sheet shape, an insulated flexible circuit board substrate is used as a carrier substrate, a series of disc electrodes are arranged on the front surface of the flexible circuit board substrate according to a set electrode arrangement mode, the disc electrodes can be in direct contact with the surface of the skin of a human body to acquire myoelectric signals of the human body, each disc electrode is arranged in a dot-matrix electrode arrangement mode, and the disc electrodes are combined in pairs to form a multi-dimensional difference mode to form a multi-channel disc electrode array, so that each two disc electrodes form an independent channel for acquiring the myoelectric signals, a series of electronic components are further arranged on the back surface of the flexible circuit board substrate to form a voltage following circuit, and each disc electrode is directly connected with the voltage following circuit to perform impedance matching; the signal acquisition circuit system is also in a sheet shape, the other insulated flexible circuit board substrate is used as a carrier substrate, so that the flexible dry electrode module and the flexible circuit board substrate of the signal acquisition circuit system form a laminated device combination, and the flexible dry electrode module and the flexible circuit board substrate of the signal acquisition circuit system mainly comprise a series of electronic components arranged on the corresponding flexible circuit board substrate, wherein the electronic components mainly comprise an amplification filtering module, a microcontroller module, an A/D conversion module, a wireless communication module, a data storage module and a power supply module, and the microcontroller module is respectively in signal connection with the amplification filtering module, the A/D conversion module, the wireless communication module and the data storage module; the amplification and filtering module filters the electromyographic signals mixed with artifact interference noise and power frequency interference noise, limits the signals within a certain frequency band range, and then amplifies the signal voltage by a certain multiple to enable the voltage value of the electromyographic signals to reach the voltage standard of A/D conversion; the microcontroller module is used for realizing data processing, controlling the A/D conversion module and the wireless transmission module and coordinating the work of each unit in the system; the A/D conversion module is used for converting an analog signal input by the front end into a digital signal; the data storage module is used for storing data generated in the electromyographic signal monitoring process; the wireless communication module is used for sending the processed electromyographic signals to an upper client in a wireless mode, so that the electromyographic signals can be further processed and analyzed conveniently, and the client is preferably provided with a PC (personal computer) and a mobile phone device; the power supply module supplies power to the voltage following circuit and the signal acquisition circuit; the voltage following circuit of the flexible dry electrode module is characterized in that an operational amplifier is directly arranged on a flexible circuit board substrate, impedance matching is carried out on the electromyographic signals collected by each channel, the surface electromyographic signals with high output impedance are converted into low output impedance, the electromyographic signals of each channel after impedance matching are connected with an amplifying and filtering circuit of an amplifying and filtering module, the electromyographic signals collected by a signal collecting circuit system are amplified and filtered, a data storage module stores data generated in the electromyographic signal monitoring process, and a power supply module supplies power for the flexible dry electrode module and electronic components of the signal collecting circuit system; the voltage following circuit is characterized in that an operational amplifier is directly arranged on a flexible circuit board substrate to perform impedance matching on an electromyographic signal acquired by each channel, a surface electromyographic signal sEMG with high output impedance is converted into low output impedance, and the electromyographic signal of each channel after impedance matching is connected with an amplification filter circuit; the flexible printed electronic process of the flexible circuit board substrate can adopt a plurality of methods of FPCB, silk screen printing and ink-jet printing of the flexible printed circuit board; as a preferred technical scheme, the amplifying and filtering circuit is used for filtering the electromyographic signals after impedance matching, enabling the collected signals to be located in a certain effective frequency band, and amplifying the voltage by a certain multiple to meet the requirement of A/D conversion; in consideration of the requirements of larger amplification factor and noise reduction, the analog circuit preferably adopts two-stage amplification and filtering, and the gain setting of the first stage is higher; the auxiliary assembly mainly comprises a flexible flat cable, an elastic body and a sticky medical adhesive tape, wherein the elastic body is arranged between two flexible circuit board substrates of the flexible dry electrode module and the signal acquisition circuit system, so that a disc electrode of the flexible dry electrode module forms a convex structure, the surface of the disc electrode is fully contacted with the surface of skin, the sticky medical adhesive tape covers one side of the flexible circuit board substrate of the signal acquisition circuit system, the flexible dry electrode module, the signal acquisition circuit system and the flexible flat cable and the elastic body of the auxiliary assembly are packaged into a flexible electrode pasting device in a patch type shape, the flexible dry electrode module and the signal acquisition circuit system are positioned on the pasting surface side of the sticky medical adhesive tape, and the active dot-matrix flexible electrode pasting device can be fixed at the position of the skin surface corresponding to the muscle part to be monitored by using the sticky medical adhesive tape; the elastic body is arranged between the active flexible dry electrode and the signal acquisition circuit, and the elastic body is arranged for enabling the electrode to have a certain bulge without influencing the flexibility of the electrode; in order to enhance the air permeability of the patch device, the elastic body is preferably made of a material with better air permeability, and the material of the elastic body is preferably made of an elastic substance soft sponge; the adhesive medical adhesive plaster encapsulates the flexible dry electrode module, the signal acquisition circuit system and the main additional component together to form an electrode patch, so that the filtering problem caused by the deviation of the pasting direction of the electrode is avoided; when the device is used, the disc electrodes of the multichannel disc electrode array are attached to a muscle part to be monitored, the impedance matching is carried out on the collected electromyographic signals through the voltage following circuit, the signals are transmitted to the amplification filtering module in the signal collection circuit system through the flexible flat cable to be amplified and filtered, the microcontroller module adopts firmware with a corresponding program which is pre-programmed, the electromyographic signals subjected to the amplification filtering processing are subjected to electromyographic signal denoising, the A/D conversion preprocessing is carried out through the A/D conversion module, the preprocessed signals are converted into digital signals, the digital signals are transmitted to the upper computer through the wireless communication module in a wireless transmission mode, the signals are further processed by the upper computer, the physiological function is analyzed after the signal characteristics are extracted, and the health condition of the muscle is evaluated. The device is suitable for collecting human body surface electrophysiological signals in the field of medical health.
As a preferred technical scheme of the present invention, a multi-channel disc electrode array adopts a dot-matrix electrode arrangement mode to collect human body myoelectric signals, and simultaneously performs multi-dimensional differential calculation, and selects a motion unit action potential in a required direction through software calculation, and on the front surface of a flexible circuit board substrate of a flexible dry electrode module, each disc electrode adopts two-by-two combination to form multi-dimensional differential channel arrangement in a radial arrangement mode or a matrix arrangement mode, so that the number of channels of the flexible dry electrode module is an even number greater than 2, and the number of channels of the electrodes is preferably 4, 6, 8, 12, 16, specifically: the method comprises two preferable technical schemes as follows:
as a first preferred technical scheme of the present invention, when the multi-channel disc electrode array is arranged in a matrix arrangement manner on the disc electrodes, the multi-channel disc electrode array is mainly applied to myoelectric signal acquisition under the condition that the myofibers are linearly and regularly arranged. The multichannel disc electrode array is preferably applied to the condition that the muscle fiber walking direction is in spatial distribution when the muscle contracts by adopting a matrix arrangement mode.
As a second preferred technical solution of the present invention, when the multi-channel disc electrode array is arranged by using a radial arrangement manner to arrange the disc electrodes, the multi-channel disc electrode array is mainly applied to myoelectric signal acquisition under the condition that the myofibers are distributed in a complicated or irregular manner.
As an improvement of the first preferred technical solution of the present invention, when the disc electrodes of the multi-channel disc electrode array are arranged in a matrix arrangement manner, on the flexible circuit board substrate, the disc electrodes located at the middle position of each row or each column are used as common electrodes in the same row or the same column, so that the multi-channel disc electrode array forms an axisymmetric arrangement form, and the common electrodes are respectively arranged in pairs and pairs with the disc electrodes located at the left and right sides of the same row or the same column to form a series of independent channels, thereby forming a planar multi-channel layout in the matrix arrangement manner.
As a further improvement of the first preferred technical solution of the present invention, when the multi-channel disc electrode array arranges the disc electrodes in a matrix arrangement manner, the number of rows or columns of electrodes is continuously increased longitudinally or transversely in accordance with the same arrangement manner of each row or each column, so as to form an extended planar multi-channel layout in a matrix arrangement manner, thereby realizing myoelectric acquisition of more channels.
As an improvement of the second preferred technical solution of the present invention, when the multi-channel disc electrode array arranges the disc electrodes in a radial arrangement manner, one of the disc electrodes is arranged on the flexible circuit board substrate as a central electrode, and the other disc electrodes are arranged around the central electrode as peripheral electrodes, so that the multi-channel disc electrode array forms a centrosymmetric arrangement form, and the central electrode and each peripheral electrode are arranged in a pairwise differential manner to form a series of independent channels, thereby forming a planar multi-channel layout in the radial arrangement manner.
As a further improvement of the second preferred technical solution of the present invention, when the multi-channel disc electrode array is arranged by adopting the ray arrangement manner to arrange the disc electrodes, the multi-channel disc electrode array having the same arrangement manner is composed of at least two layers, and the multi-layer channels form a compound multi-channel disc electrode array. The number of the acquisition channels of the electrode can be increased by increasing the number of the layers of the electrode.
According to the technical scheme, the multi-channel disc electrodes are differentiated in various different dot-matrix arrangement modes, so that myoelectric signals of complex muscle groups can be extracted in a certain muscle area, and the spatial filtering effect of the signals is improved. The dot matrix type arrangement mode is mainly divided into a matrix type and a ray type, and the matrix type is mainly applied when muscle fibers are linearly and regularly arranged; the ray type is mainly applied to the complicated muscle fiber distribution, such as the spatial distribution of the muscle fiber in the muscle contraction.
As another preferable technical scheme of the invention, a certain number of air holes with set sizes are arranged on the flexible circuit board substrate of the flexible dry electrode module. The flexible circuit board substrate is provided with a certain number of air holes with proper sizes so as to bring better air permeability for skin. As a further improvement, on the flexible circuit board substrate of the flexible dry electrode module, the air holes are formed in the periphery of the multi-channel disc electrode array.
As another preferable technical solution of the present invention, the adhesive medical tape is detachably covered on one side of the flexible circuit board substrate of the signal acquisition circuit system, and is packaged into a flexible electrode patch device in a patch type shape. As a further improvement, the adhesive medical adhesive is not adhesive to the contact area of the signal acquisition circuit system, and certain areas of the edge of the adhesive medical adhesive in contact with the skin are adhesive. In order to prevent components in the signal acquisition circuit from being stuck on the sticky medical adhesive plaster, the contact area of the adopted sticky medical adhesive plaster and the signal acquisition circuit is not sticky, and a certain area of the edge contacted with the skin has stickiness; the adhesive plaster is preferably made of medical pressure-sensitive adhesive material, and can be attached to skin by pressing the adhesive plaster with thumb, and the medical adhesive plaster has air-permeable and waterproof effects.
As another preferable technical scheme of the invention, the flexible dry electrode module and the flexible circuit board substrate of the signal acquisition circuit system are circular, elliptical and polygonal, and can be suitable for acquiring the electromyographic signals of different parts of a human body.
As another preferable technical scheme of the invention, on the front surface of the flexible circuit board substrate of the flexible dry electrode module, the distance between any two adjacent disk electrodes forming the multichannel disk electrode array is 3-4 mm, the diameter of each disk electrode is 2.5-3 mm, and the height of each disk electrode is not more than 80 μm.
As another preferable technical solution of the present invention, the disk electrode of the flexible dry electrode module is made of any one metal material or any alloy material of several metals, or is made of a layered composite material made of different metals, or is made of a layered composite material made of any alloy material of several metals.
As another preferable technical scheme of the invention, two ends of the flexible flat cable are correspondingly connected with the flexible dry electrode module and the signal acquisition circuit system through FPC connectors. Namely, an FPC connector is arranged on a flexible circuit board substrate of the signal acquisition circuit system, one end of the FPC connector is communicated with the signal acquisition circuit system, the other end of the FPC connector is communicated with a flexible flat cable on a flexible circuit board substrate of the flexible dry electrode module, and the flexible dry electrode module performs impedance matching on the electromyographic signals of each channel through a voltage follower circuit and then transmits the electromyographic signals to the signal acquisition circuit system through the flexible flat cable.
As another preferable technical scheme of the invention, the flexible circuit board substrates of the flexible dry electrode module and the signal acquisition circuit system are made of polyimide PI or polyester fiber PET.
As another preferred technical solution of the present invention, the circuit board region of the flexible circuit board substrate of the flexible dry electrode module except the disk electrode region is provided with an insulating protective layer, wherein the outer layers of the flexible dry electrode module and the flexible circuit board substrate of the signal acquisition circuit system are both insulating layers, and the inner portions of the flexible circuit board substrate are both provided with a conducting wire layer. The invention preferably provides the insulating structure with a protective measure of applying insulating ink.
As another preferable technical scheme of the invention, the power supply module is independently arranged on the outer surface of the signal acquisition circuit system, and the inner surface of the signal acquisition circuit system faces the substrate of the flexible circuit board, so that the power supply process of the whole signal acquisition circuit system and the flexible dry electrode module is safer and more stable.
As another preferable technical solution of the present invention, the power module employs a battery module device. In order to reduce the volume of the whole system, the button cell with smaller volume is preferably adopted as the power module.
In another preferred technical scheme of the invention, the flexible circuit board substrate of the flexible dry electrode module and the signal acquisition circuit system adopts a multilayer board composite structure, the flexible circuit board substrate is provided with through holes, and the multilayer boards of the flexible circuit board substrate are communicated with each other through the through holes.
Compared with the prior art, the invention has the following obvious and prominent substantive characteristics and remarkable advantages:
1. the device has the characteristics of convenience in wearing and softness, is suitable for long-term use for 24 hours every day, and meets the requirements of human-computer interaction such as rehabilitation and diseases;
2. the device adopts a dot-matrix electrode arrangement mode, can collect electrophysiological signals of muscle groups with irregular or smaller muscle fiber trends, can realize multidimensional differential calculation, and selects motion unit action potentials in required directions through software calculation so as to improve the spatial filtering effect, thereby reducing the interaction effect and improving the spatial resolution;
3. the device adopts a multi-channel circular flat plate electrode, the number of channels in a proper area is enough, and an elastic body is arranged above the electrode, so that the good contact between the electrode and the skin is ensured;
4. the device adopts a skin patch type design, has small structure and good convenience, can be hidden under clothes for use, does not interfere with daily movement or movement, has more accurate recorded data, is made of soft materials, and is particularly suitable for monitoring small-area muscle groups.
Drawings
Fig. 1 is a schematic structural diagram of an active matrix flexible electrode attachment device according to an embodiment of the present invention.
Fig. 2 is a partially enlarged sectional view of a portion a of fig. 1.
Fig. 3 is an enlarged partial sectional view of a portion B of fig. 1.
Fig. 4 is a schematic diagram of a signal system principle and an application of an active matrix flexible electrode attachment device according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of an adhesive medical tape according to a first embodiment of the present invention.
Fig. 6 is a schematic diagram of a dot matrix electrode arrangement of the multi-channel disk electrode array according to the first embodiment of the present invention.
Fig. 7 is a schematic diagram of a dot matrix electrode arrangement of the multi-channel disk electrode array according to the second embodiment of the present invention.
Fig. 8 is a schematic diagram of a dot matrix electrode arrangement of the multi-channel disk electrode array according to the third embodiment of the present invention.
Fig. 9 is a schematic diagram of a dot matrix electrode arrangement of a multi-channel disk electrode array according to a fourth embodiment of the present invention.
Fig. 10 is a schematic diagram of a dot matrix electrode arrangement of the multi-channel disk electrode array according to the fifth embodiment of the present invention.
Detailed Description
The preferred embodiments of the invention are detailed below:
the first embodiment is as follows:
in this embodiment, referring to fig. 1 to 6, an active matrix type flexible electrode pasting device is composed of a flexible dry electrode module i, a signal acquisition circuit system ii and an accessory component iii, and specifically is:
the flexible dry electrode module I is in a thin sheet shape, an insulated flexible circuit board substrate 1 is used as a carrier substrate, a series of disc electrodes are installed on the front surface of the flexible circuit board substrate 1 according to a set electrode arrangement mode, the disc electrodes can be in direct contact with the surface of the skin of a human body to acquire myoelectric signals of the human body, each disc electrode is arranged in a dot-matrix electrode arrangement mode and is combined in pairs to form a multi-dimensional difference mode to form a multi-channel disc electrode array 2, each two disc electrodes form an independent channel for acquiring the myoelectric signals, a series of electronic components 17 are further arranged on the back surface of the flexible circuit board substrate 1 to form a voltage following circuit 4, and each disc electrode is directly connected with the voltage following circuit 4 to perform impedance matching; the signal acquisition circuit system II is also in a sheet shape, the other insulated flexible circuit board substrate 1 is used as a carrier substrate, so that the flexible dry electrode module I and the flexible circuit board substrate 1 of the signal acquisition circuit system II form a laminated device combination, the flexible dry electrode module I and the flexible circuit board substrate 1 of the signal acquisition circuit system II are composed of a series of electronic devices 18 and 19 arranged on the corresponding flexible circuit board substrate 1, the electronic devices 18 and 19 form an amplification filtering module 20, a microcontroller module 30, an A/D conversion module 40, a wireless communication module 50, a data storage module 60 and a power supply module 6, the microcontroller module 30 is respectively connected with the amplification filtering module 20, the A/D conversion module 40, the wireless communication module 50, the data storage module 60 and the power supply module 6 through signals, and an operational amplifier is directly arranged on the flexible circuit board substrate 1 by a voltage following circuit 4 of the flexible dry electrode module I, the method comprises the steps of performing impedance matching on an electromyographic signal acquired by each channel, converting a surface electromyographic signal with high output impedance into low output impedance, connecting the electromyographic signal of each channel subjected to impedance matching with an amplification filter circuit of an amplification filter module 20, performing amplification and filtering processing on the electromyographic signal acquired by a signal acquisition circuit system II, storing data generated in the electromyographic signal monitoring process by a data storage module 60, and supplying power to electronic components 17, 18 and 19 in a flexible dry electrode module I and the signal acquisition circuit system II by a power supply module 6; the amplification and filtering module 20 filters the electromyographic signals mixed with artifact interference noise and power frequency interference noise, limits the signals within a certain frequency band range, and then amplifies the signal voltage by a certain multiple to enable the voltage value of the electromyographic signals to reach the voltage standard of A/D conversion; the microcontroller module 30 is used for processing data, controlling the a/D conversion module 40 and the wireless transmission module 50, and coordinating the operation of each unit in the system; the a/D conversion module 40 is used for converting an analog signal input from the front end into a digital signal; the data storage module 60 is used for storing data generated in the electromyographic signal monitoring process; the wireless communication module 50 is used for wirelessly transmitting the processed electromyographic signals to an upper computer client, so as to facilitate further processing and analysis of the electromyographic signals; the accessory component III mainly comprises a flexible flat cable 7, an elastic body 8 and a sticky medical adhesive plaster 10, wherein the elastic body 8 is arranged between two flexible circuit board substrates 1 of the flexible dry electrode module I and the signal acquisition circuit system II, so that a disc electrode of the flexible dry electrode module I forms a convex structure, the surface of the disc electrode is fully contacted with the surface of the skin, the viscous medical adhesive plaster 10 covers one side of the flexible circuit board substrate 1 of the signal acquisition circuit system II, the flexible dry electrode module I, the signal acquisition circuit system II, the flexible flat cable 7 of the accessory component III and the elastomer 8 are packaged into a flexible electrode pasting device in a paster type shape, the flexible dry electrode module I and the signal acquisition circuit system II are positioned on the pasting surface side of the viscous medical adhesive plaster 10, and the active dot-matrix flexible electrode pasting device can be fixed at the position of the surface of the skin corresponding to the muscle part needing to be monitored by using the viscous medical adhesive plaster 10; when in use, the disc electrodes of the multi-channel disc electrode array 2 are attached to the muscle parts to be monitored, the collected electromyographic signals are subjected to impedance matching through a voltage follower circuit 4 and then transmitted to an amplifying and filtering module 20 in a signal collecting circuit system II through a flexible flat cable 7 for amplifying and filtering, a microcontroller module 30 adopts firmware which is pre-programmed with a corresponding program, the electromyographic signals after amplification and filtering are denoised, and are subjected to A/D conversion pretreatment through an A/D conversion module 40, then the preprocessed signals are converted into digital signals which are transmitted to an upper computer through a wireless communication module 50 in a wireless transmission mode, a client adopts a PC, the PC machine further processes the signals, and after signal characteristics are extracted, physiological functions are analyzed to evaluate the health condition of the muscles.
In this embodiment, referring to fig. 1, fig. 2, fig. 4 and fig. 6, a multi-channel disc electrode array 2 adopts a dot-matrix electrode arrangement mode to collect human body myoelectric signals, and simultaneously perform multi-dimensional differential calculation, and select a motion unit action potential in a required direction through software calculation, on the front surface of a flexible circuit board substrate 1 of a flexible dry electrode module i, each disc electrode adopts two-by-two combination to form a multi-dimensional differential channel arrangement in a radial arrangement mode, so that the number of channels of the flexible dry electrode module i is 4, and when the multi-channel disc electrode array 2 adopts the radial arrangement mode to arrange the disc electrodes, the multi-channel disc electrode array is mainly applied to myoelectric signal collection under the condition that myofibers are distributed in a complicated or irregular arrangement.
In this embodiment, referring to fig. 1, fig. 2, fig. 4 and fig. 6, when the multi-channel disk electrode array 2 arranges and sets the disk electrodes in a radial arrangement manner, one of the disk electrodes is set as a central electrode on the flexible circuit board substrate 1, and the other disk electrodes are set around the central electrode as peripheral electrodes, so that the multi-channel disk electrode array 2 forms a centrosymmetric arrangement form, and the central electrode and each peripheral electrode are differentially arranged two by two to form a series of independent channels, thereby forming a planar multi-channel unit in the radial arrangement manner;
in the present embodiment, referring to fig. 1 and 6, a certain number of air vents 3 with a set size are arranged on the flexible circuit board substrate 1 of the flexible dry electrode module i, and the air vents 3 are arranged at the periphery of the multi-channel disc electrode array 2.
In the present embodiment, referring to fig. 1 to 6, the flexible circuit board substrates 1 of the flexible dry electrode module i and the signal acquisition circuit system ii are circular; on the front surface of a flexible circuit board substrate 1 of a flexible dry electrode module I, the distance between any two adjacent disk electrodes forming a multichannel disk electrode array 2 is 4mm, the diameter of each disk electrode is 3mm, and the height of each disk electrode is 80 microns; the disc electrode of the flexible dry electrode module I is a laminated structure electrode formed by compounding a copper plating layer 13 and a nickel-gold plating layer 14, wherein the nickel-gold plating layer 14 is exposed outside and is in direct contact with skin of a position to be measured to measure an electromyographic signal; two ends of the flexible flat cable 7 are correspondingly connected with the flexible dry electrode module I and the signal acquisition circuit system II through FPC connectors 9; the flexible dry electrode module I and the flexible circuit board substrate 1 of the signal acquisition circuit system II are made of polyimide materials; the circuit board area of the flexible circuit board substrate 1 of the flexible dry electrode module I except the area of the disk electrode is provided with an insulating protective layer, wherein the outer layers of the flexible circuit board substrates 1 of the flexible dry electrode module I and the signal acquisition circuit system II are insulating layers 11, and the inner parts of the flexible circuit board substrates 1 are provided with lead layers 12; the power supply module 6 is independently arranged on the outer surface of the signal acquisition circuit system II, and the inner surface of the signal acquisition circuit system II faces the flexible circuit board substrate 1; the power module 6 employs a battery module device.
In this embodiment, referring to fig. 1 to 3, a flexible circuit board substrate 1 of the flexible dry electrode module i and the signal acquisition circuit system ii adopts a multi-layer board composite structure, a via hole 5 is formed in the flexible circuit board substrate 1, and the multi-layer boards of the flexible circuit board substrate 1 are communicated with each other through the via hole 5.
In this embodiment, referring to fig. 1 to 6, the active dot matrix flexible electrode pasting device includes a flexible circuit board substrate 1, a disk electrode 2, an air vent 3, a voltage follower circuit 4, a via hole 5, a power module 6, a flexible flat cable 7, an elastic body 8, an FPC connector 9, and a sticky medical adhesive tape 10. The disc electrode is printed on a flexible circuit board substrate 1, a voltage following circuit 4 is printed on the flexible circuit board substrate 1, 4 air holes 3 are formed in the flexible circuit board substrate, a circuit is printed on the flexible circuit board substrate 1 through a FPCB (flexible printed circuit board) preparation method, circuit communication of a multilayer board is achieved through via holes 5, and the flexible circuit board substrate 1, the disc electrode 2, the air holes 3 and the voltage following circuit 4 jointly form a flexible dry electrode module I. The signal acquisition circuit system ii mainly includes an amplification filtering module 20, a microcontroller module 30, an a/D conversion module 40, a data storage module 60, a wireless communication module 50, and a power supply module 6, and referring to fig. 4, a flexible circuit board substrate 1 thereof is manufactured by an FPCB manufacturing method, so that the flexible circuit board replaces a conventional hard circuit board. In order to reduce the area of the circuit board, the invention adopts a method of manufacturing a multilayer board, and the connection of the multilayer board is realized through a via hole 5. The power module 6 ensures normal power supply and is independently arranged on the uppermost layer of the signal acquisition circuit, see fig. 1. The accessory component III is composed of a flexible flat cable 7, an elastic body 8, an FPC connecting port 9 and a sticky medical adhesive plaster 10. The flexible dry electrode module I carries out impedance matching on the electromyographic signals of each channel through the voltage follower circuit 4 and then transmits the electromyographic signals to the signal acquisition circuit system II through the flexible flat cable 7. And an elastic body 8 is arranged above the signal acquisition circuit system II, and referring to fig. 1, the active flexible dry electrode of the flexible dry electrode module I has a convex effect, so that the disc electrode is fully contacted with the skin. The adhesive medical plaster 10 covers the uppermost surface, referring to fig. 1, an active matrix type flexible electrode pasting device is formed, the device is pasted on a muscle part needing to be monitored, the effective viscosity of the adhesive medical plaster 10 is one week, and when the adhesive medical plaster 10 loses viscosity, only the adhesive medical plaster needs to be replaced and used. The device of the embodiment can be used for monitoring various muscle groups, is not limited by the curvature of the muscle surface, and can be used for the forehead, the hand, the wrist, the arm, the shoulder, the chest, the waist, the leg, the foot and the like without large motion artifacts. The ellipse A, B in FIG. 1 represents a partially enlarged mark.
Fig. 2 is a partially enlarged cross-sectional view of a portion a of the flexible dry electrode module i in fig. 1 according to the present embodiment. The flexible dry electrode module I in this embodiment adopts a two-layer board, which mainly comprises a flexible circuit board substrate 1, a via hole 5, an insulating layer 11, a conducting wire layer 12, a copper plating layer 13, a nickel-gold plating layer 14, a pad 15, a pin 16 and an electronic component 17, wherein a disc electrode 2 is printed below the flexible circuit board substrate 1, the disc electrode 2 consists of the copper plating layer 13 with the height of 70 μm and the nickel-gold plating layer 14 with the height of 10 μm, the insulating layer 11 is coated on the peripheral area except the disc electrode 2, the diameter of the disc electrode is 3mm, the electrical communication between the disc electrode 2 and an upper board circuit is realized through the via hole 5, a conducting circuit 12 is printed on the upper layer of the flexible circuit board substrate 1, the circuit is connected with the pad 15, the pad 15 and the pin 16 are connected through tin paste to realize the electrical connection of the electronic component 17.
Fig. 3 is an enlarged partial cross-sectional view of a portion B of the signal acquisition circuit system ii in fig. 1 according to the present embodiment. The signal acquisition circuit system II of this embodiment also adopts two-layer board, mainly by flexible circuit board base 1, via hole 5, insulating layer 11, wire layer 12, pad 15, pin 16, electronic components 18 and 19 constitute, two-layer wire, electronic components 18 and 19 and insulating layer 11 are being distributed to upper and lower two-layer on flexible circuit board base 1, the electrical connection of upper and lower two-layer electronic components 18 and 19 and wire is realized through via hole 5, other regions except pad 15 all scribble insulating layer 11.
Fig. 4 shows that the active matrix flexible electrode of this embodiment is attached to a muscle part to be monitored, and amplifies and filters the collected myoelectric signals, the microcontroller module 30 is programmed with a corresponding program to perform the electrocardiographic denoising and the a/D conversion on the signals, the preprocessed signals are converted into digital signals and transmitted to the upper computer in a wireless transmission manner, the signals are further processed by the upper computer, the physiological functions are analyzed after the signal characteristics are extracted, and the health condition of the muscle is evaluated.
Fig. 5 is a schematic structural view of the adhesive medical tape 10 used in the present embodiment. The central circle 22 of the adhesive medical plaster 10 covers the signal acquisition circuit system II, the width of the edge 21 of the adhesive medical plaster 10 is 50mm, and a certain area of the edge 21 of the adhesive medical plaster 10, which is in contact with the skin, has viscosity; the adhesive medical plaster 10 is made of medical pressure-sensitive adhesive material, and can be attached to the skin only by pressing the adhesive plaster with the thumb.
Fig. 6 is a schematic diagram of the dot matrix electrode arrangement of the multi-channel disk electrode array 2 according to the embodiment. And in an arrangement mode, multi-dimensional difference can be realized through hardware, and MUAP in a required direction is selected through software calculation. The disc electrodes are differentiated in a plurality of different dot-matrix arrangement modes, so that electromyographic signals of complex muscle groups can be extracted in a certain muscle area, and the spatial filtering effect of the signals is improved. Fig. 6 shows a type of the radial arrangement in this embodiment, each disk electrode is directly connected to a voltage follower circuit 4 for impedance matching, then the disk electrodes are differentiated pairwise, the disk electrodes 2-1-1 and 2-1-5 form a channel 1, 2-1-2 and 2-1-5 form a channel 2, 2-1-3 and 2-1-5 form a channel 3, 2-1-4 and 2-1-5 form a channel 4, the disk electrode pitch of each channel is 4mm, the included angle between adjacent channels is 90 °, in this embodiment, a one-layer arrangement method is adopted to form a multi-channel disk electrode array 2 with 4 channels, and 4 air holes 3 are provided in the multi-channel disk electrode array 2.
Example two:
this embodiment is substantially the same as the first embodiment, and is characterized in that:
in this embodiment, refer to fig. 7, which is a schematic diagram of a dot matrix electrode arrangement of the multi-channel disk electrode array 2 in this embodiment. And in an arrangement mode, multi-dimensional difference can be realized through hardware, and MUAP in a required direction is selected through software calculation. The disc electrodes are differentiated in a plurality of different dot-matrix arrangement modes, so that electromyographic signals of complex muscle groups can be extracted in a certain muscle area, and the spatial filtering effect of the signals is improved. FIG. 7 shows another type of the radial arrangement in this embodiment, each disk electrode is directly connected to the voltage follower circuit 4 for impedance matching, then the disk electrodes are differentiated pairwise, the disk electrodes 2-2-1 and 2-2-7 form channels 1, 2-2-2 and 2-2-7 form channels 2, 2-2-3 and 2-2-7 form channels 3, 2-2-4 and 2-2-7 form channels 4, the disk electrodes 2-2-5 and 2-2-7 form channels 5, 2-2-6 and 2-2-7 form channels 6, the disk electrode pitch of each channel is 4mm, the included angle between adjacent channels is 60 °, so as to form a multi-channel disk electrode array 2 with 6 channels, 4 air holes 3 are arranged on the multi-channel disc electrode array 2.
Referring to fig. 7, the flexible dry electrode module i, the signal acquisition circuit system ii and the accessory module iii are integrated in a piece of adhesive patch in the present embodiment. The flexible dry electrode module I is in direct contact with the surface of a human body to collect myoelectric signals of the human body, impedance matching is achieved through the voltage following circuit 4, the myoelectric signals after impedance matching are subjected to amplification filtering and A/D conversion processing through the signal collecting circuit system II, and finally the myoelectric signals are transmitted to an upper computer client through the wireless communication module 50. The device has the characteristics of convenience in wearing and softness, is suitable for long-term use for 24 hours every day, and meets the requirements of human-computer interaction such as rehabilitation and diseases. The device of the embodiment adopts a dot-matrix electrode arrangement mode, particularly a ray arrangement mode, is mainly applied to myoelectric signal acquisition under the condition that the myoelectric fibers are distributed in a complex or irregular way, and can realize multidimensional differential calculation to improve the spatial filtering effect.
Example three:
this embodiment is substantially the same as the previous embodiment, and is characterized in that:
in this embodiment, refer to fig. 8, which is a schematic diagram of a dot matrix electrode arrangement of the multi-channel disk electrode array 2 in this embodiment. And in an arrangement mode, multi-dimensional difference can be realized through hardware, and MUAP in a required direction is selected through software calculation. The disc electrodes are differentiated in a plurality of different dot-matrix arrangement modes, so that electromyographic signals of complex muscle groups can be extracted in a certain muscle area, and the spatial filtering effect of the signals is improved. FIG. 8 shows another type of the radial arrangement in this embodiment, each disk electrode is directly connected to the voltage follower circuit 4 for impedance matching, and then the disk electrodes are differentiated two by two, the disk electrodes 2-3-1 and 2-3-9 form the channels 1, 2-3-2 and 2-3-9 form the channels 2, 2-3-3 and 2-3-9 form the channels 3, 2-3-4 and 2-3-9 form the channel 4, the disk electrodes 2-3-5 and 2-3-9 form the channels 5, 2-3-6 and 2-3-9 form the channel 6, the disk electrodes 2-3-7 and 2-3-9 form the channel 7, 2-3-8 and 2-3-9 form the channel 8, the disc electrode distance of each channel is 4mm, the included angle between adjacent channels is 45 degrees, a multi-channel disc electrode array 2 with 8 channels is formed, and 4 air holes 3 are formed in the multi-channel disc electrode array 2.
Referring to fig. 8, the flexible dry electrode module i, the signal acquisition circuit system ii and the accessory module iii are integrated in a piece of adhesive patch in the present embodiment. The flexible dry electrode module I is in direct contact with the surface of a human body to collect myoelectric signals of the human body, impedance matching is achieved through the voltage following circuit 4, the myoelectric signals after impedance matching are subjected to amplification filtering and A/D conversion processing through the signal collecting circuit system II, and finally the myoelectric signals are transmitted to an upper computer client through the wireless communication module 50. The device has the characteristics of convenience in wearing and softness, is suitable for long-term use for 24 hours every day, and meets the requirements of human-computer interaction such as rehabilitation and diseases. The device of the embodiment adopts a dot-matrix electrode arrangement mode, particularly a ray arrangement mode, is mainly applied to myoelectric signal acquisition under the condition that the myoelectric fibers are distributed in a complex or irregular way, and can realize multidimensional differential calculation to improve the spatial filtering effect.
Example four:
this embodiment is substantially the same as the previous embodiment, and is characterized in that:
in this embodiment, referring to fig. 9, when the multi-channel disc electrode array 2 arranges and sets the disc electrodes in a matrix arrangement manner, on the flexible circuit board substrate 1, the disc electrodes located at the middle position of each row are used as common electrodes in the same row, so that the multi-channel disc electrode array 2 forms an axisymmetric arrangement form, the common electrodes are respectively arranged in pairs and pairs with the disc electrodes located at the left and right sides of the same row, and form a series of independent channels, thereby forming a planar multi-channel layout in the matrix arrangement manner. Fig. 9 is a schematic diagram of the dot matrix electrode arrangement of the multi-channel disk electrode array 2 according to the embodiment. And in an arrangement mode, multi-dimensional difference can be realized through hardware, and MUAP in a required direction is selected through software calculation. The disc electrodes are differentiated in a plurality of different dot-matrix arrangement modes, so that electromyographic signals of complex muscle groups can be extracted in a certain muscle area, and the spatial filtering effect of the signals is improved. Fig. 9 shows a type of the matrix arrangement in this embodiment, each disk electrode is directly connected to a voltage follower circuit 4 for impedance matching, then the disk electrodes are differentiated pairwise, the disk electrodes 2-4-1 and 2-4-2 form a channel 1, 2-4-2 and 2-4-3 form a channel 2, 2-4-6 and 2-4-5 form a channel 3, 2-4-5 and 2-4-4 form a channel 4, the disk electrode pitch of each channel is 4mm, a 4-channel multi-channel disk electrode array 2 is formed, and 4 air holes 3 are formed on the left and right sides of two rows of disk electrodes of the multi-channel disk electrode array 2.
Referring to fig. 9, the flexible dry electrode module i, the signal acquisition circuit system ii and the accessory module iii are integrated in a piece of adhesive patch in the present embodiment. The flexible dry electrode module I is in direct contact with the surface of a human body to collect myoelectric signals of the human body, impedance matching is achieved through the voltage following circuit 4, the myoelectric signals after impedance matching are subjected to amplification filtering and A/D conversion processing through the signal collecting circuit system II, and finally the myoelectric signals are transmitted to an upper computer client through the wireless communication module 50. The device has the characteristics of convenience in wearing and softness, is suitable for long-term use for 24 hours every day, and meets the requirements of human-computer interaction such as rehabilitation and diseases. The device of the embodiment adopts a dot matrix type electrode arrangement mode, especially when a matrix type arrangement mode is adopted to arrange and set the disc electrodes, the myoelectric signal acquisition is mainly carried out under the condition that the myoelectric fibers are arranged in a linear rule, and the multidimensional difference calculation can be realized to improve the spatial filtering effect. .
Example five:
this embodiment is substantially the same as the previous embodiment, and is characterized in that:
in this embodiment, referring to fig. 10, when the multi-channel disc electrode array 2 arranges and sets the disc electrodes in a matrix arrangement manner, on the flexible circuit board substrate 1, the disc electrodes located at the middle position of each row are used as common electrodes in the same row, so that the multi-channel disc electrode array 2 forms an axisymmetric arrangement manner, and the common electrodes are respectively arranged in pairs and pairs with the disc electrodes located at the left and right sides of the same row, to form a series of independent channels, thereby forming a planar multi-channel layout in the matrix arrangement manner. Fig. 10 is a schematic diagram of a dot matrix electrode arrangement of the multi-channel disk electrode array 2 according to the embodiment. And in an arrangement mode, multi-dimensional difference can be realized through hardware, and MUAP in a required direction is selected through software calculation. The disc electrodes are differentiated in a plurality of different dot-matrix arrangement modes, so that electromyographic signals of complex muscle groups can be extracted in a certain muscle area, and the spatial filtering effect of the signals is improved. Fig. 10 shows another type of the matrix arrangement in this embodiment, each disk electrode is directly connected to a voltage follower circuit 4 for impedance matching, then the disk electrodes are differentiated pairwise, the disk electrodes 2-5-1 and 2-5-2 form a channel 1, 2-5-2 and 2-5-3 form a channel 2, 2-5-6 and 2-5-5 form a channel 3, 2-5-5 and 2-5-4 form a channel 4, the disk electrode pitch of each channel is 4mm, a 4-channel multi-channel disk electrode array 2 is formed, and 4 air holes 3 are formed in the upper and lower sides of two rows of disk electrodes of the multi-channel disk electrode array 2.
Referring to fig. 10, the present embodiment integrates the flexible dry electrode module i, the signal acquisition circuitry ii, and the accessory module iii into a single adhesive patch. The flexible dry electrode module I is in direct contact with the surface of a human body to collect myoelectric signals of the human body, impedance matching is achieved through the voltage following circuit 4, the myoelectric signals after impedance matching are subjected to amplification filtering and A/D conversion processing through the signal collecting circuit system II, and finally the myoelectric signals are transmitted to an upper computer client through the wireless communication module 50. The device has the characteristics of convenience in wearing and softness, is suitable for long-term use for 24 hours every day, and meets the requirements of human-computer interaction such as rehabilitation and diseases. The device of the embodiment adopts a dot matrix type electrode arrangement mode, especially when a matrix type arrangement mode is adopted to arrange and set the disc electrodes, the myoelectric signal acquisition is mainly carried out under the condition that the myoelectric fibers are arranged in a linear rule, and the multidimensional difference calculation can be realized to improve the spatial filtering effect.
Example six:
this embodiment is substantially the same as the previous embodiment, and is characterized in that:
in this embodiment, when the multi-channel disc electrode arrays 2 in the first, second, and third embodiments are arranged in a radial arrangement manner, the multi-channel disc electrode array 2 having the same arrangement manner is composed of two layers, and two planar multi-channel units form the multiple multi-channel disc electrode array 2. The embodiment adopts a two-layer arrangement method, and can form the multi-channel disk electrode array 2 with 8 channels, 12 channels and 16 channels.
In the embodiment, the flexible dry electrode module I, the signal acquisition circuit system II and the accessory component III are integrated in a piece of sticky patch. The flexible dry electrode module I is in direct contact with the surface of a human body to collect human body electromyographic signals, the multichannel disc electrode array 2 with more channels is in contact with the skin to collect human body surface electrophysiological electromyographic signals, impedance matching is achieved through the voltage follower circuit 4, the signal collection circuit system II is used for carrying out amplification filtering and A/D conversion processing on the electromyographic signals after impedance matching, and finally the electromyographic signals are transmitted to an upper computer client through the wireless communication module 50. The device has the characteristics of convenience in wearing and softness, is suitable for long-term use for 24 hours every day, and meets the requirements of human-computer interaction such as rehabilitation and diseases. The device of the embodiment adopts a dot-matrix electrode arrangement mode, particularly a ray arrangement mode, and collects electrophysiological signals of muscle fiber parts with irregular or smaller muscle groups, and can realize multidimensional differential calculation to improve the spatial filtering effect.
Example seven:
this embodiment is substantially the same as the previous embodiment, and is characterized in that:
in this embodiment, when the multi-channel disk electrode arrays 2 in the fourth and fifth embodiments are arranged in a matrix arrangement manner, the number of rows or columns of electrodes is continuously increased in the longitudinal or transverse direction in the same arrangement manner for each row or each column, so as to form an extended planar multi-channel layout in the matrix arrangement manner, thereby achieving myoelectric acquisition of more channels.
In the embodiment, the flexible dry electrode module I, the signal acquisition circuit system II and the accessory component III are integrated in a piece of sticky patch. The flexible dry electrode module I is in direct contact with the surface of a human body to collect human body electromyographic signals, the multichannel disc electrode array 2 with more channels is in contact with the skin to collect human body surface electrophysiological electromyographic signals, impedance matching is achieved through the voltage follower circuit 4, the signal collection circuit system II is used for carrying out amplification filtering and A/D conversion processing on the electromyographic signals after impedance matching, and finally the electromyographic signals are transmitted to an upper computer client through the wireless communication module 50. The device has the characteristics of convenience in wearing and softness, is suitable for long-term use for 24 hours every day, and meets the requirements of human-computer interaction such as rehabilitation and diseases. The device of the embodiment adopts a dot matrix type electrode arrangement mode, especially adopts a matrix type arrangement mode, collects electrophysiological signals of muscle fibers which are arranged in a linear rule or at smaller muscle groups, and can realize multidimensional differential calculation to improve the spatial filtering effect.
Example eight:
this embodiment is substantially the same as the previous embodiment, and is characterized in that:
in this embodiment, the adhesive medical tape 10 is detachably covered on one side of the flexible circuit board substrate 1 of the signal acquisition circuit system ii, and is packaged into a patch-type flexible electrode patch device. The contact area of the adhesive medical adhesive plaster 10 and the signal acquisition circuit system II is not adhesive, and a certain area of the edge of the adhesive medical adhesive plaster 10 contacted with the skin has adhesiveness. The central circle 22 of the adhesive medical adhesive plaster 10 is contacted with the signal acquisition circuit system II, and the area has no adhesiveness, the width of the edge 21 in the adhesive medical adhesive plaster 10 is 50mm, and a certain area of the edge 21 in the adhesive medical adhesive plaster 10 contacted with the skin has adhesiveness; the adhesive medical plaster 10 is made of medical pressure-sensitive adhesive material, and can be attached to the skin only by pressing the adhesive plaster with the thumb. The medical adhesive tape 10 of viscidity of this embodiment covers on signal acquisition circuit system II, forms the device is pasted to active dot-matrix flexible electrode, pastes the device at the muscle position that needs the monitoring, and the effective viscidity of the medical adhesive tape 10 of viscidity is a week, and when the medical adhesive tape 10 of viscidity loses viscidity, only need to change the viscidity adhesive tape can.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes and modifications can be made according to the purpose of the invention, and any changes, modifications, substitutions, combinations or simplifications made according to the spirit and principle of the technical solution of the present invention shall be equivalent substitutions, so long as the purpose of the present invention is met, and the present invention shall fall within the protection scope of the present invention without departing from the technical principle and inventive concept of the active matrix type flexible electrode patch device of the present invention.

Claims (10)

1. The utility model provides a device is pasted to active dot-matrix flexible electrode which characterized in that mainly comprises flexible dry electrode module (I), signal acquisition circuit system (II) and accessory subassembly (III), specifically is:
the flexible dry electrode module (I) is in a thin sheet shape, an insulated flexible circuit board substrate (1) is used as a carrier substrate, a series of disc electrodes are arranged on the front surface of a flexible circuit board substrate (1) according to a set electrode arrangement mode to form a multi-channel disc electrode array (2), the disc electrodes can be in direct contact with the skin surface of a human body to collect the electromyographic signals of the human body, each disc electrode is arranged in a dot matrix type electrode arrangement mode, and the multi-dimensional difference mode is formed by combining two disk electrodes to form a multi-channel disk electrode array (2), so that each two disk electrodes form an independent channel for collecting electromyographic signals, a series of electronic components (17) are arranged on the back surface of the flexible circuit board substrate (1), and form a voltage following circuit (4), each disc electrode is directly connected with the voltage following circuit (4) for impedance matching;
the signal acquisition circuit system (II) is also in a sheet shape, another insulated flexible circuit board substrate (1) is used as a carrier substrate, the flexible dry electrode module (I) and the flexible circuit board substrate (1) of the signal acquisition circuit system (II) form a laminated device combination which mainly comprises a series of other electronic components (18, 19) arranged on the corresponding flexible circuit board substrate (1), the other electronic components (18, 19) mainly form an amplification filtering module (20), a microcontroller module (30), an A/D conversion module (40), a wireless communication module (50), a data storage module (60) and a power supply module (6), the microcontroller module (30) is respectively connected with the amplification filtering module (20), the A/D conversion module (40), the wireless communication module (50) and the data storage module (60), the voltage following circuit (4) of the flexible dry electrode module (I) is characterized in that an operational amplifier is directly arranged on a flexible circuit board substrate (1) to perform impedance matching on the electromyographic signals acquired by each channel, the surface electromyographic signals with high output impedance are converted into low output impedance, the electromyographic signals of each channel after impedance matching are connected with an amplifying and filtering circuit of an amplifying and filtering module (20), the electromyographic signals acquired by the signal acquisition circuit system (II) are amplified and filtered, the data storage module (60) stores data generated in the electromyographic signal monitoring process, and the power supply module (6) supplies power to the flexible dry electrode module (I) and electronic components (17) of the signal acquisition circuit system (II);
the auxiliary assembly (III) mainly comprises a flexible flat cable (7), an elastomer (8) and a viscous medical adhesive tape (10), wherein the elastomer (8) is arranged between the flexible dry electrode module (I) and two flexible circuit board substrates (1) of the signal acquisition circuit system (II), so that a disc electrode of the flexible dry electrode module (I) forms a convex structure, the surface of the disc electrode is fully contacted with the surface of skin, the viscous medical adhesive tape (10) covers one side of the flexible circuit board substrate (1) of the signal acquisition circuit system (II), the flexible dry electrode module (I), the signal acquisition circuit system (II) and the flexible flat cable (7) and the elastomer (8) of the auxiliary assembly (III) are packaged into a flexible electrode pasting device in a patch type shape, and the flexible dry electrode module (I) and the signal acquisition circuit system (II) are located on the flexible medical adhesive tape (10) The active matrix type flexible electrode sticking device can be fixed at the skin surface position corresponding to the muscle position needing to be monitored by using the adhesive medical adhesive plaster (10) on the sticking surface side;
when in use, the disc electrodes of the multi-channel disc electrode array (2) are attached to the muscle part to be monitored, the collected electromyographic signals are subjected to impedance matching through the voltage following circuit (4), the signals are transmitted to the amplification filtering module (20) in the signal collection circuit system (II) through the flexible flat cable (7) to be amplified and filtered, the microcontroller module (30) adopts firmware which is pre-programmed with a corresponding program to carry out electromyographic signal denoising on the electromyographic signals subjected to the amplification filtering processing, and carries out A/D conversion preprocessing through the A/D conversion module (40), then the preprocessed signals are changed into digital signals which are transmitted to an upper computer through the wireless communication module (50) in a wireless transmission mode, the signals are further processed by the upper computer, and the physiological function is analyzed after the signal characteristics are extracted, assessing the health of the muscle;
the flexible dry electrode module (I) is in signal connection with the signal acquisition circuit system (II).
2. The active matrix type flexible electrode pasting device according to claim 1, wherein the multi-channel disk electrode array (2) adopts a matrix type electrode arrangement mode to collect human body myoelectric signals and simultaneously perform multi-dimensional differential calculation, motion unit action potentials in a required direction are selected through software calculation, and on the front surface of the flexible circuit board substrate (1) of the flexible dry electrode module (i), each disk electrode adopts pairwise combination to form a multi-dimensional differential channel arrangement in a ray type arrangement mode or a matrix type arrangement mode, so that the number of channels of the flexible dry electrode module (i) is an even number greater than 2, specifically:
when the multi-channel disc electrode array (2) adopts a matrix arrangement mode to arrange the disc electrodes, the myoelectric signal acquisition method is mainly applied to myoelectric signal acquisition under the condition that muscle fibers are linearly and regularly arranged;
or when the multi-channel disc electrode array (2) adopts a ray type arrangement mode to arrange the disc electrodes, the multi-channel disc electrode array is mainly applied to myoelectric signal acquisition under the condition that the myofibers are distributed in a complex or irregular way.
3. The active matrix flexible electrode device of claim 2, wherein: when the multi-channel disc electrode array (2) adopts a ray arrangement mode to arrange the disc electrodes, one disc electrode is arranged on the flexible circuit board substrate (1) as a central electrode, and other disc electrodes are arranged around the central electrode as peripheral electrodes, so that the multi-channel disc electrode array (2) forms a centrosymmetric arrangement mode, the central electrode and each peripheral electrode are respectively arranged in a pairwise difference mode to form a series of independent channels, and a plane multi-channel layout of the ray arrangement mode is formed;
or when the multi-channel disc electrode array (2) adopts a matrix arrangement mode to arrange and set the disc electrodes, on the flexible circuit board substrate (1), the disc electrodes positioned at the middle position of each row or each column are used as the common electrodes in the same row or the same column, so that the multi-channel disc electrode array (2) forms an axisymmetric arrangement mode, the common electrodes are respectively arranged in pairs with the disc electrodes positioned at the left side and the right side of the same row or the same column to form a series of independent channels, and the planar multi-channel layout of the matrix arrangement mode is formed.
4. The active matrix flexible electrode device of claim 3, wherein: when the multi-channel disc electrode array (2) adopts a ray type arrangement mode to arrange the disc electrodes, the multi-channel disc electrode array (2) with the same arrangement mode is composed of at least two layers, and the multi-layer channels can form a compound multi-channel disc electrode array (2);
or when the multi-channel disc electrode array (2) arranges the disc electrodes in a matrix arrangement mode, the number of electrode rows or columns is continuously increased longitudinally or transversely according to the same arrangement mode of each row or each column to form an extended planar multi-channel layout in the matrix arrangement mode so as to realize myoelectricity acquisition of more channels.
5. The active matrix flexible electrode device according to any one of claims 1 to 4, wherein: the flexible circuit board substrate (1) of the flexible dry electrode module (I) is provided with a certain number of air holes (3) with set sizes.
6. The active matrix flexible electrode device of claim 5, wherein: on the flexible circuit board substrate (1) of the flexible dry electrode module (I), the air holes (3) are formed in the periphery of the multi-channel disc electrode array (2).
7. The active matrix flexible electrode device according to any one of claims 1 to 4, wherein: the adhesive medical adhesive plaster (10) is detachably covered on one side of the flexible circuit board substrate (1) of the signal acquisition circuit system (II) and packaged into a flexible electrode pasting device in a patch type shape.
8. The active matrix flexible electrode device of claim 7, wherein: the contact area of the adhesive medical adhesive plaster (10) and the signal acquisition circuit system (II) is not adhesive, and a certain area of the edge of the adhesive medical adhesive plaster (10) in contact with the skin has adhesiveness.
9. The active matrix flexible electrode device according to any one of claims 1 to 4, wherein: the flexible dry electrode module (I) and the flexible circuit board substrate (1) of the signal acquisition circuit system (II) are circular, oval and polygonal;
or on the front surface of the flexible circuit board substrate (1) of the flexible dry electrode module (I), the distance between any two adjacent disk electrodes forming the multichannel disk electrode array (2) is 3-4 mm, the diameter of each disk electrode is 2.5-3 mm, and the height of each disk electrode is not more than 80 microns;
or the disc electrode of the flexible dry electrode module (I) is made of any one metal material or any alloy material of several metals, or made of layered composite materials made of different metals, or made of any alloy material of several metals;
or the two ends of the flexible flat cable (7) are correspondingly in signal connection with the flexible dry electrode module (I) and the signal acquisition circuit system (II) through FPC (flexible printed circuit) connectors (9);
or the flexible dry electrode module (I) and the flexible circuit board substrate (1) of the signal acquisition circuit system (II) are made of polyimide or polyester fiber;
or, the circuit board area of the flexible circuit board substrate (1) of the flexible dry electrode module (I) except the disk electrode area is provided with an insulating protective layer, wherein the outer layers of the flexible circuit board substrates (1) of the flexible dry electrode module (I) and the signal acquisition circuit system (II) are both insulating layers (11), and the inner parts of the flexible circuit board substrates (1) are both provided with lead layers (12);
or the power supply module (6) is independently arranged on the outer surface of the signal acquisition circuit system (II), and the inner surface of the signal acquisition circuit system (II) faces the flexible circuit board substrate (1);
alternatively, the power module (6) adopts a battery module device.
10. The active matrix flexible electrode device according to any one of claims 1 to 4, wherein: the flexible printed electronic process of the flexible circuit board substrate adopts a flexible printed circuit board FPCB process, a screen printing or ink-jet printing method; the disc electrode (2) is printed on the flexible circuit board substrate (1), and the voltage following circuit (4) is printed on the flexible circuit board substrate (1).
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1736326A (en) * 2004-06-17 2006-02-22 三星电子株式会社 The multi-electrode module and use it measuring method and equipment and the lead-in wire searching method
CN103393420A (en) * 2013-07-30 2013-11-20 中国科学技术大学 High-density active flexible electrode array and signal conditioning circuit thereof
CN103445763A (en) * 2013-08-26 2013-12-18 华中科技大学 Epidermal-electronics-based health monitoring system
CN103735263A (en) * 2013-11-18 2014-04-23 浙江大学 Array surface myoelectric image collector and collecting method
CN104783791A (en) * 2015-04-24 2015-07-22 北京新兴阳升科技有限公司 Electrode measurement device based on electromyographic signals of genioglossus muscle
WO2017013486A1 (en) * 2015-07-23 2017-01-26 Universitat Politecnica De Catalunya Portable device, system and method for measuring electromyographic signals of a user

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1736326A (en) * 2004-06-17 2006-02-22 三星电子株式会社 The multi-electrode module and use it measuring method and equipment and the lead-in wire searching method
CN103393420A (en) * 2013-07-30 2013-11-20 中国科学技术大学 High-density active flexible electrode array and signal conditioning circuit thereof
CN103445763A (en) * 2013-08-26 2013-12-18 华中科技大学 Epidermal-electronics-based health monitoring system
CN103735263A (en) * 2013-11-18 2014-04-23 浙江大学 Array surface myoelectric image collector and collecting method
CN104783791A (en) * 2015-04-24 2015-07-22 北京新兴阳升科技有限公司 Electrode measurement device based on electromyographic signals of genioglossus muscle
WO2017013486A1 (en) * 2015-07-23 2017-01-26 Universitat Politecnica De Catalunya Portable device, system and method for measuring electromyographic signals of a user

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