CN112043267A - Contact surface self-adaptive electroencephalogram dry electrode - Google Patents
Contact surface self-adaptive electroencephalogram dry electrode Download PDFInfo
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- CN112043267A CN112043267A CN202011079802.8A CN202011079802A CN112043267A CN 112043267 A CN112043267 A CN 112043267A CN 202011079802 A CN202011079802 A CN 202011079802A CN 112043267 A CN112043267 A CN 112043267A
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- contact surface
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- dry electrode
- adaptive
- electroencephalogram
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- 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
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
- A61B2562/0215—Silver or silver chloride containing
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Abstract
The invention provides a contact surface self-adaptive electroencephalogram dry electrode which comprises a bottom plate, a base and a plurality of electrodes, wherein a plurality of mounting channels for mounting the electrodes are arranged on the base in a penetrating mode, and the contact surface self-adaptive electroencephalogram dry electrode further comprises an elastic membrane structure arranged between the base and the bottom plate. The dry electrode is used, so that the complex process of using a wet electrode and the discomfort caused by a large amount of residual conductive paste are avoided, the comfort level of the electrode in contact with the scalp is ensured by using the elastic membrane structure, the arrangement of the front end of the electrode can be automatically adjusted according to the shape of the contact surface by using a plurality of electrode columns, the scalp can be automatically adapted to the shape of the scalp in the using process, the electrode structure is small and light, the electrode structure is suitable for various complicated contact surface conditions, the comfort level is ensured, the contact between the front end of the electrode and the scalp is more sufficient, and the optimal contact impedance is obtained.
Description
Technical Field
The invention belongs to the technical field of artificial intelligence, and particularly relates to a contact surface self-adaptive electroencephalogram dry electrode.
Background
The electrodes are media for transmitting electroencephalogram signals to an external system, and two common electroencephalogram collecting electrodes are provided, one is a wet electrode, and the other is a dry electrode. When the wet electrode is used, due to the cooperation of the conductive paste, the wet electrode generally has lower electrode/tissue interface impedance, so that the electric signal acquisition quality is better. However, it has several disadvantages: firstly, the use preparation time is long, the conductive paste needs to be injected into the electrodes one by one, and one person is difficult to wear the electrodes independently; secondly, after the electrode is used by a testee, the hair and scalp parts have serious conductive adhesive residues which can be removed only by washing the hair, thereby causing great inconvenience to the testee; and thirdly, the method is not suitable for long-term chronic electrophysiological signal monitoring, and the conductive liquid can gradually volatilize and evaporate along with the time lapse, so that the skin-electrode interface impedance is increased.
The dry electrode technology has the advantages that the dry electrode technology does not need to be matched with conductive paste for use, can be worn and used immediately, does not need to be cleaned after use and the like, and is a key technology for the brain-computer interface technology from the laboratory to the application. The existing scalp dry electrode mostly adopts a columnar or comb-shaped structure, and aims to penetrate through hair and contact with the scalp. However, in actual use, the impedance of the scalp dry electrode is often high and is easily affected by pressure due to the absence of conductive paste assistance, non-planar scalp, interference of hair on the contact surface, and the like. At present, most of the columns of comb-shaped or columnar electrodes are made of hard materials, and are not adjustable and compressible. Therefore, the contact surface formed by the columns is fixed, and when the contact surface is contacted with the scalp, each electrode column cannot be guaranteed to be well contacted with the curved scalp. Some electrodes have adopted the spring structure, solve the problem of contact compactness and comfort level through the mode of placing the spring in the electrode rear, but the too big or the comparatively complicated condition of curved surface of contact surface camber can't be adapted to this kind of structure, uses the volume and the weight of spring meeting greatly increased dry electrode moreover.
Disclosure of Invention
The invention aims to provide a contact surface self-adaptive electroencephalogram dry electrode capable of automatically adapting to the shape of a scalp.
In order to achieve the purpose, the invention provides a contact surface self-adaptive electroencephalogram dry electrode which comprises a bottom plate, a base and a plurality of electrodes, wherein a plurality of installation channels for installing the electrodes are arranged on the base in a penetrating mode, and the contact surface self-adaptive electroencephalogram dry electrode further comprises an elastic membrane structure arranged between the base and the bottom plate.
As a further improvement of the present invention, the elastic film structure includes an elastic film layer and a conductive layer, and the conductive layer is located above the elastic film layer.
As a further improvement of the invention, the material of the conductive film layer is a silver fiber layer.
As a further improvement of the invention, the elastic film layer is made of a rubber layer or a silica gel layer.
As a further development of the invention, the electrode comprises an upper connection section and a lower connection section.
As a further improvement of the present invention, the upper connecting section and the lower connecting section are both cylindrical bodies, wherein the lower connecting section has a larger diameter than the upper connecting section, and the upper and lower connecting sections are connected in a coaxial manner.
As a further improvement of the invention, the end of the upper connecting section is provided with a hemispherical contact point.
As a further development of the invention, the diameter of the installation channel is greater than the diameter between the upper and lower connecting sections.
As a further improvement of the invention, a bulge for outputting an electrode signal is arranged at the edge of the conductive film layer.
As a further improvement of the invention, a plurality of matched assembly holes for fixedly mounting together are arranged on the bottom plate and the base, and the bottom plate is circular.
Compared with the prior art, the invention has the following beneficial effects:
the dry electrode is used, so that the complex process of using a wet electrode and the discomfort caused by a large amount of residual conductive paste are avoided, the comfort level of the electrode in contact with the scalp is ensured by using the elastic membrane structure, the arrangement of the front end of the electrode can be automatically adjusted according to the shape of the contact surface by using a plurality of electrode columns, the scalp can be automatically adapted to the shape of the scalp in the using process, the electrode structure is small and light, the electrode structure is suitable for various complicated contact surface conditions, the comfort level is ensured, the contact between the front end of the electrode and the scalp is more sufficient, and the optimal contact impedance is obtained.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a front view of a contact surface adaptive electroencephalogram dry electrode of the present invention;
fig. 2 is an explosion diagram of the contact surface self-adaptive electroencephalogram dry electrode.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
The embodiment provides a contact surface self-adaptive electroencephalogram dry electrode, as shown in fig. 1-2, which comprises a bottom plate 1, a base 2, a plurality of electrodes 3, a plurality of installation channels 4 for installing the electrodes 3, and an elastic membrane structure 5 arranged between the base 2 and the bottom plate 1.
The elastic film structure 5 includes an elastic film layer 51 and a conductive layer 52, and the conductive layer 52 is located above the elastic film layer 51. The conductive film layer 51 is made of a silver fiber layer, and the elastic film layer 52 is made of a rubber layer or a silica gel layer. In this embodiment, the elastic film structure is preferably layered and disposed as a conductive layer and an elastic film layer, and the two layers are combined, but in other embodiments, the elastic film structure may be directly coated with a coating layer having conductive properties, or the material of the conductive film layer may be compounded to directly provide excellent elasticity. In the embodiment, the conductive layer has certain elasticity, and an additional elastic film layer is added to effectively increase the overall elastic recovery effect, and in addition, sufficient supporting force is added to the conductive layer to prevent the electrode from piercing through the conductive layer due to overlarge stress.
The electrode 3 includes an upper connection section 31 and a lower connection section 32, both the upper connection section 31 and the lower connection section 32 are cylindrical, wherein the lower connection section 32 has a larger diameter than the upper connection section 31, and the upper and lower connection sections are connected in a coaxial manner. The end of the upper connecting section 31 is provided with a hemispherical contact point 33. The diameter of the installation channel is larger than the diameter between the upper connecting section and the lower connecting section. The setting of the upper and lower section cylinders that adopts in this embodiment to through the setting to the diameter of upper and lower section cylinder and installation passageway, can be effectively with electrode fixed mounting between base and conducting layer, set up to the matching of the length of lower connection segment through the height to the base in addition, for example, set up to the same length, can effectually guarantee the effective contact of electrode and conducting layer. In other embodiments, the upper and lower ends of the electrode may have other shapes, and the base may adjust the mounting passage according to the shape of the electrode.
In the present embodiment, the conductive layer 52 is provided with a protrusion 53 at the edge for outputting an electrode signal, and before use, an effective and reliable electrical connection can be formed only after an external signal connector is in contact connection with the protrusion. The bottom plate and the base are provided with a plurality of matched assembling holes 6 which are fixedly arranged together, and the bottom plate is circular. In the present embodiment, in order to give a large elastic return stroke to the elastic film layer, the middle of the bottom plate is hollowed out, and a shape of a regular circle is provided. However, in other embodiments, the bottom plate may be directly closed by increasing the thickness of the elastic film layer, and the elasticity of the electrode may be controlled by only the thickness of the elastic film.
It should be understood that although the terms first, second, third, etc. may be used in one or more embodiments of the present description to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of one or more embodiments herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The above description is only for the purpose of illustrating the preferred embodiments of the one or more embodiments of the present disclosure, and is not intended to limit the scope of the one or more embodiments of the present disclosure, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the one or more embodiments of the present disclosure should be included in the scope of the one or more embodiments of the present disclosure.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A contact surface self-adaptive electroencephalogram dry electrode comprises a bottom plate, a base and a plurality of electrodes, and is characterized in that: the contact surface self-adaptive electroencephalogram dry electrode comprises a base, a plurality of installation channels for installing electrodes are arranged on the base in a penetrating mode, and an elastic membrane structure is arranged between the base and a bottom plate.
2. The contact surface adaptive electroencephalogram dry electrode of claim 1, characterized in that: the elastic membrane structure comprises an elastic membrane layer and a conducting layer, wherein the conducting layer is located above the elastic membrane layer.
3. The contact surface adaptive electroencephalogram dry electrode of claim 2, characterized in that: the conductive film layer is made of a silver fiber layer.
4. The contact surface adaptive electroencephalogram dry electrode of claim 2, characterized in that: the elastic film layer is made of a rubber layer or a silica gel layer.
5. The contact surface adaptive electroencephalogram dry electrode of claim 1, characterized in that: the electrode includes an upper connection section and a lower connection section.
6. The contact surface adaptive electroencephalogram dry electrode of claim 5, wherein: the upper connecting section and the lower connecting section are both cylinders, wherein the diameter of the lower connecting section is larger than that of the upper connecting section, and the upper connecting section and the lower connecting section are connected in a coaxial mode.
7. The contact surface adaptive electroencephalogram dry electrode of claim 6, wherein: the tail end of the upper connecting section is provided with a hemispherical contact point.
8. The contact surface adaptive electroencephalogram dry electrode of claim 6, wherein: the diameter of the installation channel is larger than the diameter between the upper connecting section and the lower connecting section.
9. The contact surface adaptive electroencephalogram dry electrode of claim 2, characterized in that: and a protruding part for outputting an electrode signal is arranged at the edge of the conductive film layer.
10. The contact surface adaptive electroencephalogram dry electrode of claim 1, characterized in that: the bottom plate and the base are provided with a plurality of matched assembling holes for being fixedly installed together, and the bottom plate is annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011079802.8A CN112043267A (en) | 2020-10-10 | 2020-10-10 | Contact surface self-adaptive electroencephalogram dry electrode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011079802.8A CN112043267A (en) | 2020-10-10 | 2020-10-10 | Contact surface self-adaptive electroencephalogram dry electrode |
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| CN112043267A true CN112043267A (en) | 2020-12-08 |
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| CN202011079802.8A Pending CN112043267A (en) | 2020-10-10 | 2020-10-10 | Contact surface self-adaptive electroencephalogram dry electrode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974637A (en) * | 2021-12-23 | 2022-01-28 | 天津大学 | Novel highly comfortable elastic electroencephalogram dry electrode, electroencephalogram equipment and application system |
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2020
- 2020-10-10 CN CN202011079802.8A patent/CN112043267A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974637A (en) * | 2021-12-23 | 2022-01-28 | 天津大学 | Novel highly comfortable elastic electroencephalogram dry electrode, electroencephalogram equipment and application system |
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