CN120732425B - Bioelectric signal detection module and electrode assembly thereof - Google Patents
Bioelectric signal detection module and electrode assembly thereofInfo
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- CN120732425B CN120732425B CN202511264080.6A CN202511264080A CN120732425B CN 120732425 B CN120732425 B CN 120732425B CN 202511264080 A CN202511264080 A CN 202511264080A CN 120732425 B CN120732425 B CN 120732425B
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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
- A61B5/251—Means for maintaining electrode contact with the body
- A61B5/257—Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes
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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
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0531—Measuring skin impedance
- A61B5/0533—Measuring galvanic skin response
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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
- A61B5/294—Bioelectric electrodes therefor specially adapted for particular uses for nerve conduction study [NCS]
-
- 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
- A61B5/301—Input circuits therefor providing electrical separation, e.g. by using isolating transformers or optocouplers
-
- 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
- A61B5/307—Input circuits therefor specially adapted for particular uses
- A61B5/311—Input circuits therefor specially adapted for particular uses for nerve conduction study [NCS]
-
- 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
- A61B5/388—Nerve conduction study, e.g. detecting action potential of peripheral nerves
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- General Health & Medical Sciences (AREA)
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dermatology (AREA)
- Power Engineering (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention discloses a bioelectric signal detection module and an electrode assembly thereof, and relates to the technical field of electric signal detection, wherein the electrode assembly of the bioelectric signal detection module comprises two electrode structures which are arranged at intervals along a second direction and symmetrically along a first direction, the two electrode structures are respectively an anode electrode structure and a cathode electrode structure, each electrode structure comprises a first electrode group, a second electrode and a grounding electrode, the first electrode group comprises two first electrodes which are arranged at intervals along the first direction, the second electrode is arranged between the two first electrodes, the second electrode is arranged at intervals with each first electrode and forms a gap with each first electrode, and the grounding electrode extends along the gap. According to the invention, the second electrode and the two first electrodes are completely separated from each other in physical and electrical manner through the grounding electrode, so that crosstalk between the first electrodes and the second electrodes is prevented, and the first electrodes and the second electrodes are prevented from being conducted due to the fact that sweat is fully spread on the electrode assemblies, thereby improving the accuracy of detection results.
Description
Technical Field
The invention relates to the technical field of electric signal detection, in particular to a bioelectric signal detection module and an electrode assembly thereof.
Background
Bioelectric signal detection, such as Galvanic Skin Response (GSR) and nerve electric signal (ENG) detection, is widely used in the medical field for assisting in diagnosis of neurological diseases, evaluation of psychological stress level, monitoring of muscle function status, and evaluation of rehabilitation effect. The signals can acquire real-time information of the physiological state of the human body in a non-invasive or minimally invasive mode, and provide important physiological and pathological basis for doctors.
However, bioelectric signal detection equipment in the prior art is huge in size and complex in test flow, meanwhile, different equipment is adopted for detection of skin electric reaction detection and nerve electric signal detection, and in detection equipment integrating skin electric reaction detection and nerve electric signal detection, signal crosstalk is easy to occur to electrodes of skin electric reaction detection and nerve electric signal detection due to the fact that the distance is short, sweat also often flows the electrodes of the two detection due to the fact that the detection equipment needs to be attached to the surface of the skin, and therefore detection results are inaccurate.
Disclosure of Invention
The invention mainly aims to provide a bioelectric signal detection module and an electrode assembly thereof, and aims to solve the problems that signal crosstalk is easy to occur between electrodes for skin electric reaction detection and nerve electric signal detection in the prior art due to the fact that the distance is relatively short, sweat can often flow the two detected electrodes in series, and the detection result is inaccurate.
In order to achieve the above object, the present invention provides an electrode assembly of a bioelectric signal detection module, comprising two electrode structures spaced along a second direction and symmetrically arranged along a first direction, wherein the first direction is different from the second direction, the two electrode structures are respectively a positive electrode structure and a negative electrode structure, and each electrode structure comprises:
A first electrode group including two first electrodes spaced apart along the first direction, each of the first electrodes being for contacting the skin and detecting skin electrical signals;
The second electrode is arranged between the two first electrodes, is used for contacting with the skin and detecting nerve electric signals, is arranged at intervals with the first electrodes, and forms a gap with the two first electrodes;
And the grounding electrode extends along the gap, so that the grounding electrode is arranged outside the second electrode and separates the second electrode from each first electrode.
In an embodiment, two sides of each first electrode along the second direction are a first side and a second side, the dimension of each first electrode along the first direction is gradually widened from the first side to the second side, one surface of each first electrode facing the ground electrode is a first inclined surface, the ground electrode comprises an outer side surface facing the first electrode and an inner side surface facing the second electrode, the outer side surfaces are parallel to the first inclined surfaces, and the first inclined surfaces of the two first electrodes are symmetrically arranged.
In an embodiment, the second electrode is provided with a third side and a fourth side along two sides of the second direction, the third side is arranged on the same side as the first side, the fourth side is arranged on the same side as the second side, the second electrode is arranged in a gradually expanding manner along the first direction from the fourth side to the third side, two side surfaces of the second electrode along the first direction are second inclined surfaces, and the second inclined surfaces are parallel to the inner side surfaces.
In an embodiment, the ground electrode is disposed around the two second inclined surfaces and the fourth side, so that an open side is formed at a position of the ground electrode near the third side, a closed side is formed at a position of the ground electrode near the fourth side, and the inner side surface is disposed parallel to the outer side surface, so that the second inclined surface is parallel to the first inclined surface of the first electrode adjacent thereto, and the fourth side is parallel to the closed side.
In one embodiment, the first side, the third side, and the open side of the ground electrode are flush, and the second side and the closed side are flush.
In an embodiment, a surface of each of the first electrodes facing away from the ground electrode is a vertical surface perpendicular to the first side and the second side, and the vertical surface extends along the second direction, so that an outer edge of the electrode structure is rectangular.
In an embodiment, the first inclined surface and the outer side surface of the ground electrode are uniformly spaced at a distance of 1 mm-1.4 mm, the second inclined surface and the inner side surface of the ground electrode are uniformly spaced at a distance of 1 mm-1.4 mm, and/or the electrode structures are spaced at a distance of 2 mm-4 mm.
In an embodiment, the first electrode, the second electrode and the ground electrode are each provided with a plurality of contacts arranged in an array along the first direction and the second direction on one side end face along a third direction, the contacts are used for contacting skin, and the first direction, the second direction and the third direction are perpendicular to each other.
The invention also provides a bioelectric signal detection module, which comprises a shell, a control board and an electrode assembly of the bioelectric signal detection module, wherein the control board is arranged in the shell, the electrode assembly is arranged on one side of the shell, and each first electrode, each second electrode and each grounding electrode are electrically connected with the control board.
In an embodiment, the shell is provided with a via hole, and each of the first electrode, each of the second electrode and each of the ground electrode is provided with a connecting column on a side facing the shell, and each of the first electrode, each of the second electrode and each of the ground electrode passes through the via hole through the corresponding connecting column and is electrically connected with the control board.
According to the technical scheme, the grounding electrode continuously extends along a gap formed between the first electrode and the second electrode and is positioned at the outer side of the second electrode, the second electrode and the two first electrodes are completely separated from each other in physical and electrical manners, crosstalk between the first electrode and the second electrode is prevented, meanwhile, the grounding electrode, the first electrode and the second electrode are arranged at intervals, gaps between the grounding electrode and the first electrode and gaps between the grounding electrode and the second electrode can be used for guiding sweat, the electrode assembly is prevented from being fully paved with sweat, the first electrode and the second electrode are conducted, so that interference of sweat on the first electrode and the second electrode is avoided, meanwhile, two electrode structures which are symmetrical along the first direction are respectively the positive electrode and the negative electrode of the electrode assembly, uniformity of an electric signal acquisition path is improved due to the symmetrically arranged positive electrode structure and negative electrode structure, signal distortion caused by position deviation is reduced, and accuracy of a detection result is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an electrode assembly of a bioelectric signal detection module according to an embodiment of the present invention;
Fig. 2 is a schematic cross-sectional structure of a bioelectric signal detection module according to an embodiment of the invention.
Reference numerals illustrate:
100. Electrode assembly of bioelectric signal detection module, 1, electrode structure, 10, first electrode group, 11, first electrode, 111, first side, 112, second side, 113, first inclined surface, 114, vertical surface, 20, second electrode, 21, third side, 22, fourth side, 23, second inclined surface, 30, gap, 40, grounding electrode, 41, inner side, 42, outer side, 43, opening side, 44, closed side, 50, contact, 60, connecting column, 200, bioelectric signal detection module, 201, shell, 202, via hole, 203, control panel.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present invention), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The bioelectric signal detection equipment in the prior art is huge in size and complex in test flow, meanwhile, the skin electric reaction detection and the nerve electric signal detection are all detected by adopting different equipment, and in the detection equipment integrating the skin electric reaction detection and the nerve electric signal detection, signal crosstalk is easy to occur to electrodes of the skin electric reaction detection and the nerve electric signal detection due to the fact that the distance is relatively short, sweat also often flows the electrodes of the skin electric reaction detection and the nerve electric signal detection, so that the detection result is inaccurate.
To solve the above problems, the present invention proposes an electrode assembly 100 of a bioelectric signal detection module.
Referring to fig. 1 and 2, an electrode assembly 100 of the bioelectric signal detection module of the present embodiment includes two electrode structures 1 spaced along a second direction and symmetrically arranged along a first direction, wherein the first direction is different from the second direction, the two electrode structures 1 are respectively a positive electrode structure and a negative electrode structure, each electrode structure 1 includes a first electrode group 10, a second electrode 20 and a ground electrode 40, the first electrode group 10 includes two first electrodes 11 spaced along the first direction, each first electrode 11 is used for contacting with skin and detecting skin electric signals, the second electrode 20 is disposed between the two first electrodes 11, the second electrode 20 is used for contacting with skin and detecting nerve electric signals, the second electrode 20 is disposed spaced apart from each first electrode 11 and encloses a gap 30 with the two first electrodes 11, and the ground electrode 40 extends along the gap 30 such that the ground electrode 40 is disposed outside the second electrode 20 and blocks the second electrode 20 from each first electrode 11.
The first direction is the left-right direction in fig. 1, and the second direction is the front-back direction in fig. 1.
In the technical scheme of the invention, the grounding electrode 40 continuously extends along the gap 30 formed between the first electrode 11 and the second electrode 20 and is positioned at the outer side of the second electrode 20, the second electrode 20 and the two first electrodes 11 are completely separated from each other in physical and electrical directions, so that crosstalk between the first electrodes 11 and the second electrodes 20 is prevented, meanwhile, the grounding electrode 40 and the first electrodes 11 and the second electrodes 20 are arranged at intervals, gaps between the grounding electrode 40 and the first electrodes 11 and the second electrodes 20 can be used for guiding sweat, the electrodes are prevented from being spread over the electrode assemblies to enable the first electrodes 11 and the second electrodes 20 to be conducted, so that interference of sweat on the first electrodes 11 and the second electrodes 20 is avoided, meanwhile, the two electrode structures 1 symmetrical along the first direction are respectively the positive electrode structure and the negative electrode structure, the symmetrical arrangement enables the uniformity of an electric signal acquisition path to be improved, signal distortion caused by position deviation is reduced, and accordingly accuracy of detection results is improved.
In an embodiment, two sides of each first electrode 11 along the second direction are a first side 111 and a second side 112, the dimension of the first electrode 11 along the first direction is gradually increased from the first side 111 to the second side 112, a surface of each first electrode 11 facing the ground electrode 40 is a first inclined surface 113, the ground electrode 40 includes an outer side surface 42 facing the first electrode 11 and an inner side surface 41 facing the second electrode 20, the outer side surface 42 is parallel to the first inclined surface 113, and the first inclined surfaces 113 of the two first electrodes 11 are symmetrically arranged.
The gradually-expanding design enables the contact area of the first electrode 11 to be larger than that of the rectangular electrode when the first electrode 11 is close to the skin, so that the interface impedance between the first electrode 11 and the skin is reduced, noise in the detection process is reduced, and the detected skin electric signal is more accurate. The first inclined surfaces 113 of the two first electrodes 11 are symmetrically arranged, so that the gap 30 surrounded by the first electrodes 11 and the second electrodes 20 is more consistent, and the extension of the grounding electrode 40 is facilitated.
In an embodiment, two sides of the second electrode 20 along the second direction are a third side 21 and a fourth side 22, the third side 21 is disposed on the same side as the first side 111, the fourth side 22 is disposed on the same side as the second side 112, the second electrode 20 is disposed in a manner that the dimension along the first direction gradually expands from the fourth side 22 to the third side 21, two sides of the second electrode 20 along the first direction are both second inclined surfaces 23, and the second inclined surfaces 23 are disposed in parallel with the inner side 41.
The divergent design makes the contact area of the second electrode 20 larger than that of the rectangular electrode when the second electrode 20 is close to the skin, so that the interface impedance of the second electrode 20 and the skin is reduced, the noise in the detection process is reduced, the detected skin electric signal is more accurate, the divergent direction of the second electrode 20 is opposite to the divergent direction of the first electrode 11, and the first electrode 11 and the second electrode 20 can fully utilize the space in a certain area, so that the contact area can be maximally increased while the first electrode 11 and the second electrode are arranged at intervals.
In one embodiment, the ground electrode 40 is disposed around the two second inclined surfaces 23 and the fourth side 22, such that an open side 43 is formed at a position of the ground electrode 40 near the third side 21, a closed side 44 is formed at a position of the ground electrode 40 near the fourth side 22, and the inner side 41 is disposed parallel to the outer side 42, such that the second inclined surface 23 is parallel to the first inclined surface 113 of the first electrode 11 adjacent thereto, and the fourth side 22 is parallel to the closed side 44.
The first electrode 11 and the second electrode 20 are only corresponding to the first inclined surface 113 and the second inclined surface 23, no other electrode structure 1 exists in the direction of the third side 21, and another electrode structure 1 exists in the fourth side 22, so that the grounding electrode 40 is required to plug the rest sides of the second electrode 20 except the third side 21, the position, close to the fourth side 22, of the grounding electrode 40 forms a closed side 44, a U-shaped structure is integrally formed, the first electrode 11 and the second electrode 20 can be completely isolated, crosstalk between the second electrode 20 and the second electrode 20 is avoided, and sweat is prevented from communicating the first electrode 11 and the second electrode 20.
In one embodiment, the first side 111, the third side 21, and the open side 43 of the ground electrode 40 are flush, and the second side 112 and the closed side 44 are flush.
On the one hand, the first side 111, the third side 21 and the opening side 43 are flush, the second side 112 is flush with the closing side 44, so that crosstalk with the second electrode 20 caused by the fact that the first electrode 11 partially exceeds the shielding of the grounding electrode 40 can be avoided, on the other hand, the electrode structure 1 is more uniformly stressed after being attached to the surface of the skin, partial poor contact caused by partial protrusion is avoided, and the detection stability of the electrode structure 1 is improved.
In an embodiment, a surface of each first electrode 11 facing away from the ground electrode 40 is a vertical surface 114 perpendicular to the first side 111 and the second side 112, and the vertical surface 114 extends along the second direction, so that the outer edge of the electrode structure 1 is disposed in a rectangular shape. The surface of the first electrode 11, which is away from the grounding electrode 40, is designed to be the vertical surface 114 and extends along the second direction, so that the outer edge of the electrode structure 1 is in a rectangular boundary, and the regular structure of the rectangular boundary is beneficial to splicing of the electrode assembly and other parts of the detection module, so that the motor assembly and the other parts can be aligned and limited conveniently, and meanwhile, the standardized die is convenient to process, the processing efficiency is improved, and the consistency and the modularization degree of the overall design are improved.
In one embodiment, the first inclined surface 113 is spaced uniformly from the outer side surface 42 of the ground electrode 40 by 1mm to 1.4mm, and the second inclined surface 23 is spaced uniformly from the inner side surface 41 of the ground electrode 40 by 1mm to 1.4mm.
By controlling the distance between the first electrode 11 and the ground electrode 40 and the distance between the second electrode 20 and the ground electrode 40 to be in the range of 1 mm-1.4 mm and keeping the distance uniform, the ground electrode 40 can effectively shield signal coupling between the first electrode 11 and the second electrode 20, and in the distance range, electric field leakage caused by too small distance can be avoided, incomplete shielding caused by too large distance can be avoided, so that crosstalk is remarkably reduced. The distances between the first inclined surface 113 and the second inclined surface 23 and the ground electrode 40 are kept uniform, so that the electric field distribution is symmetrical and balanced, and fluctuation of detection results caused by local distance change is avoided, thereby improving accuracy of detection data.
In one embodiment, the distance between two electrode structures 1 is 2 mm-4 mm.
Meanwhile, if the electrode spacing is too small, sweat is very easy to form a conductive path between the electrodes to cause short circuit or signal aliasing, and the sweat is controlled at a reasonable distance of 2 mm-4 mm, so that the risk of bridging of sweat is avoided, and the detection sensitivity is not influenced due to the too large distance.
In an embodiment, the first electrode 11, the second electrode 20 and the ground electrode 40 are each provided with a plurality of contacts 50 arranged in an array in the first direction and the second direction on one side end face in the third direction, the contacts 50 being for contact with the skin, the first direction, the second direction and the third direction being perpendicular to each other.
The third direction is the up-down direction in fig. 2.
When a single plane electrode is contacted with skin, the effective contact area is limited due to uneven skin surface texture, pores and sweat distribution, an array is formed by arranging a plurality of contacts 50, each contact 50 can generate tiny independent contact points 50 with the skin, the overall effective contact area is obviously increased, the current distribution is more uniform, the interface impedance of the skin and the electrode is further reduced, the signal transmission efficiency is improved, meanwhile, the array contacts 50 are distributed in a dot shape, even if part of the contacts 50 are separated from the skin temporarily, other contacts 50 still keep contact, and the overall signal is not easy to break.
The invention also provides a bioelectric signal detection module 200, the detection device comprises a shell 201, a control board 203 and the electrode assembly, the control board 203 is arranged in the shell 201, the electrode structure 1 is arranged on one side of the shell 201, and each first electrode 11, each second electrode 20 and each grounding electrode 40 are electrically connected with the control board 203 so as to send the skin electric signal detected by the first electrode 11 or the nerve electric signal detected by the second electrode 20 to the control board 203. The skin electric signal or the nerve electric signal detected by the electrode structure 1 is sent to the control board 203, and the control board 203 can analyze the skin electric signal or the nerve electric signal to obtain health data of a user, or send the skin electric signal or the nerve electric signal to external equipment, and perform statistics and analysis through the external equipment, wherein the external equipment can be specifically an intelligent device such as an intelligent watch, an intelligent mobile phone, a computer and the like.
The specific structure of the electrode assembly 100 of the bioelectric signal detection module refers to the above embodiment, and since the bioelectric signal detection module 200 adopts all the technical solutions of all the embodiments, at least the beneficial effects of the technical solutions of the embodiments are provided, and will not be described in detail herein.
In one embodiment, the shell 201 is provided with a through hole 202, and the first electrodes 11, the second electrodes 20, and the ground electrodes 40 are provided with a connecting post 60 on a side facing the shell 201, and the first electrodes 11, the second electrodes 20, and the ground electrodes 40 pass through the through hole 202 through the corresponding connecting posts 60 and are electrically connected to the control board 203.
The electrode assembly 100 of the bioelectric signal detection module is mounted on the outer side of the shell 201, so that the electrode assembly cannot occupy the inner space of the shell 201, interference with the control board 203 is avoided, meanwhile, the design of the through hole 202 and the connecting column 60 can limit the motor assembly, displacement of the first electrode 11, the second electrode 20 or the grounding electrode 40 in the detection process is avoided, and stability of the electrode assembly 100 of the bioelectric signal detection module is improved.
The foregoing description of the embodiments of the present invention should not be construed as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings or as applied directly or indirectly to other related technical fields.
Claims (9)
1. The utility model provides an electrode subassembly of bioelectric signal detection module, its characterized in that includes along the second direction interval and along two electrode structures of first direction symmetry setting, first direction is different with the second direction, two electrode structures are anodal electrode structure and negative electrode structure respectively, each electrode structure includes:
A first electrode group including two first electrodes spaced apart along the first direction, each of the first electrodes being for contacting the skin and detecting skin electrical signals;
The second electrode is arranged between the two first electrodes, is used for contacting with the skin and detecting nerve electric signals, is arranged at intervals with the first electrodes, and forms a gap with the two first electrodes;
A ground electrode extending along the gap such that the ground electrode is disposed outside the second electrode and separates the second electrode from each of the first electrodes;
the first electrode and the grounding electrode are uniformly spaced, the distance is 1 mm-1.4 mm, the second electrode and the grounding electrode are uniformly spaced, and the distance is 1 mm-1.4 mm;
The distance between the two electrode structures is 2 mm-4 mm;
The two sides of each first electrode along the second direction are respectively a first side and a second side, the two sides of each second electrode along the second direction are respectively a third side and a fourth side, the grounding electrode seals the rest sides of the second electrode except the third side, an opening side is formed at the position, close to the third side, of the grounding electrode, a closing side is formed at the position, close to the fourth side, of the grounding electrode, so that the grounding electrode forms a U-shaped structure, the first electrode and the second electrode are separated, the first side, the third side and the opening side are flush, and the second side is flush with the closing side.
2. The electrode assembly of the bioelectric signal detection module according to claim 1, wherein the first electrodes are arranged so as to be gradually widened from the first side to the second side in the first direction, a surface of each first electrode facing the ground electrode is a first inclined surface, the ground electrode includes an outer side surface facing the first electrode and an inner side surface facing the second electrode, the outer side surfaces are arranged in parallel with the first inclined surfaces, and the first inclined surfaces of the two first electrodes are symmetrically arranged.
3. The electrode assembly of the bioelectric signal detection module according to claim 2, wherein the third side is disposed on the same side as the first side, the fourth side is disposed on the same side as the second side, the second electrode is disposed in a manner that the dimension along the first direction gradually expands from the fourth side to the third side, two side surfaces of the second electrode along the first direction are both second inclined surfaces, and the second inclined surfaces are disposed in parallel with the inner side surfaces.
4. The electrode assembly of the bioelectric signal detection module according to claim 3, wherein the ground electrode is disposed around both the second inclined surface and the fourth side, and the inner side is disposed in parallel with the outer side so that the second inclined surface is parallel with the first inclined surface of the first electrode adjacent thereto, and the fourth side is parallel with the closed side.
5. The electrode assembly of the bioelectric signal detection module of claim 1, wherein a face of each of the first electrodes facing away from the ground electrode is a vertical face perpendicular to the first side and the second side, the vertical face extending in the second direction such that an outer edge of the electrode structure is rectangular.
6. The electrode assembly of a bioelectric signal detection module of claim 3,
The first inclined surface and the outer side surface of the grounding electrode are uniformly spaced with a distance of 1 mm-1.4 mm, and the second inclined surface and the inner side surface of the grounding electrode are uniformly spaced with a distance of 1 mm-1.4 mm;
And/or the number of the groups of groups,
The distance between the two electrode structures is 2 mm-4 mm.
7. The electrode assembly of the bioelectric signal detection module according to any one of claims 1 to 6, characterized in that a plurality of contacts arranged in an array in the first direction and the second direction are provided on one side end face of the first electrode, the second electrode, and the ground electrode in a third direction, the contacts being for contact with skin, the first direction, the second direction, and the third direction being perpendicular to each other.
8. A bioelectric signal detection module characterized by comprising a housing, a control board mounted in the housing, and an electrode assembly of the bioelectric signal detection module according to any one of claims 1 to 7 mounted on one side of the housing, and each of the first electrode, each of the second electrode, and each of the ground electrodes being electrically connected to the control board.
9. The bioelectric signal detection module according to claim 8, wherein a through hole is formed in the housing, and a connection post is provided on a side of each of the first electrodes, each of the second electrodes, and each of the ground electrodes facing the housing, each of the first electrodes, each of the second electrodes, and each of the ground electrodes penetrating through the through hole via the corresponding connection post and being electrically connected to the control board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202511264080.6A CN120732425B (en) | 2025-09-05 | 2025-09-05 | Bioelectric signal detection module and electrode assembly thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202511264080.6A CN120732425B (en) | 2025-09-05 | 2025-09-05 | Bioelectric signal detection module and electrode assembly thereof |
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| Publication Number | Publication Date |
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| CN120732425A CN120732425A (en) | 2025-10-03 |
| CN120732425B true CN120732425B (en) | 2026-01-30 |
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| CN202511264080.6A Active CN120732425B (en) | 2025-09-05 | 2025-09-05 | Bioelectric signal detection module and electrode assembly thereof |
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| CN118490241A (en) * | 2024-05-13 | 2024-08-16 | 上海大学 | Flexible active myoelectricity electrode array structure and preparation method thereof |
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