CN218606620U - Dry electrode and brain wave acquisition device - Google Patents
Dry electrode and brain wave acquisition device Download PDFInfo
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- CN218606620U CN218606620U CN202220709377.4U CN202220709377U CN218606620U CN 218606620 U CN218606620 U CN 218606620U CN 202220709377 U CN202220709377 U CN 202220709377U CN 218606620 U CN218606620 U CN 218606620U
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- dry electrode
- signal acquisition
- shielding layer
- brain wave
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Abstract
The utility model discloses a dry electrode and brain wave acquisition device, wherein the dry electrode comprises a signal acquisition end, a signal acquisition circuit and a shielding layer; the signal acquisition circuit is fixed in the shielding layer; one end of the signal acquisition end forms a comb-shaped structure based on a flexible conductive material, and the other end of the signal acquisition end is fixed on the shielding layer. The signal acquisition end that the dry electrode comprises by flexible conducting material through setting up reduces the oppression to user's scalp when dry electrode gathers the signal, through setting up the signal acquisition end of comb structure, can allocate hair and establish good contact with the scalp, guarantees the accuracy and the stability of collecting the brain wave signal, guarantees the comfort level that the user used simultaneously.
Description
Technical Field
The utility model mainly relates to a brain wave detects technical field, concretely relates to dry electrode and brain wave collection system.
Background
Brain waves (EEG) are bioelectrical signals generated when information is transmitted between neuron cells; the brain wave detection is an electric wave signal generated by ion exchange generated during synaptic activity of pyramidal cells in cerebral cortex, the brain wave detection observes the activity process of the brain wave through electrodes placed on the scalp according to a certain rule, the signal of the brain wave is weak, and the acquisition requirement can be met only by acquiring the good contact of the electrodes and the scalp if the signals are dozens of microvolts.
The current brain wave analytical instrument acquires brain waves through an acquisition electrode, the acquisition electrode is generally divided into a wet electrode and a dry electrode, the wet electrode needs to be coated with conductive paste to reduce impedance on a motor or a user scalp when in use, the conductive paste is thick, the user is troublesome to clean after the use, and the user experience is influenced. The dry electrode is tightly attached to the scalp of the user for collection by means of the raised hard contact points, the pressing force on the scalp of the user is large, and the scalp of the user is easily damaged, so that the existing brain wave collecting electrode still needs to be improved in the aspect of user comfort.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, the utility model provides a dry electrode and brain wave collection system, dry electrode is provided with the signal acquisition end that comprises flexible conducting material, can reduce the oppression to user's scalp, the signal acquisition end is pectination structure, can allocate hair and scalp and establish good contact, guarantees user's use comfort moreover.
The utility model provides a dry electrode, which comprises a signal acquisition end, a signal acquisition circuit and a shielding layer;
the signal acquisition circuit is fixed in the shielding layer and is electrically connected with the signal acquisition end correspondingly;
one end of the signal acquisition end forms a comb-shaped structure based on a flexible conductive material, and the other end of the signal acquisition end is fixed on the shielding layer.
Furthermore, the comb-shaped structure comprises a plurality of comb teeth.
Furthermore, an electric connection layer is arranged on one end face of the shielding layer, the other end of the signal acquisition end is fixed on the shielding layer based on the electric connection layer, and the signal acquisition circuit is connected with the electric connection layer based on a signal line.
Further, the signal acquisition end comprises a conductive layer, and the conductive layer covers the surface of the flexible conductive material.
Further, the conductive layer is a silver chloride coating.
Further, the shielding layer is made of insulating resin.
Further, the flexible conductive material is flexible conductive silica gel.
The utility model also provides a brain wave collecting device, which comprises a collecting device main body and a plurality of dry electrodes;
the collecting device main body is of a head sleeve structure, and the plurality of dry electrodes are fixed on the collecting device main body;
the collecting end of the dry electrode is arranged inside the collecting device body, and the shielding layer of the dry electrode is arranged outside the collecting device body.
Furthermore, the collecting device main part is provided with the take-up unit.
Furthermore, a bus interface and a plurality of connecting wires are arranged on the acquisition device body, and the dry electrode is connected with the bus interface based on the connecting wires.
The utility model provides a dry electrode machine brain wave collection system, dry electrode is through setting up the signal acquisition end that comprises flexible conducting material, reduces the oppression to user's scalp when dry electrode gathers signals, through the signal acquisition end that sets up the pectination structure, can allocate hair and scalp and establish good contact, guarantees the accuracy and the stability of collecting the brain wave signal, guarantees the comfort level that the user used simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a dry electrode structure in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a dry electrode structure in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electroencephalogram acquisition device in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 shows the embodiment of the utility model provides a dry electrode structure sketch map, fig. 2 shows the utility model provides an embodiment of dry electrode structure cross-sectional view, dry electrode 1 includes signal acquisition end 11, conducting layer 12 and shielding layer 13, shielding layer 13 is hemispherical structure, shielding layer 13's one end is ARC structure, shielding layer 13's the other end is planar structure, be provided with electric connection layer 131 on shielding layer 13's the other end, acquisition end 11 is the pectination structure, acquisition end 11 includes a plurality of broach, a plurality of broach is fixed on electric connection layer 131.
Furthermore, the plurality of comb teeth can shift the hair, so that the signal acquisition end 11 can better contact the scalp.
Specifically, the material of collection end 11 is flexible conducting material, flexible conducting material can be flexible conductive silica gel to silicon rubber adds the conductive particle preparation as the base member flexible conductive silica gel, flexible conductive silica gel can transmit the brain wave signal. Adopt flexible conductive silica gel can guarantee to use when doing electrode 1, reduce the oppression of doing electrode 1 to user's scalp, avoid haring user's scalp to and guarantee user's comfort level.
Furthermore, any one of the plurality of comb teeth is of a cone structure, and one end of the bottom of the cone structure of the comb teeth is fixed on the electric connection layer 131. The broach is the integrated into one piece structure, can obtain through continuous extrusion moulding processing, will through the extruder flexible conductive silica gel carries out continuous extrusion moulding, obtains comb structure's signal acquisition end 11. The comb teeth can also be obtained by compression molding, and compression molding is carried out in a high-temperature mold.
Further, the electric conductive property of flexible conductive silica gel is less than 20 omega/sq, satisfies the transmission of brain wave signal, flexible conductive silica gel has good extensibility, and certain deformation can appear in self when receiving the oppression, offsets the oppression power to reduce the pressure that the user received, guarantee user's comfort level. The flexible conductive silica gel has small influence on the conductive capability when being deformed under pressure, and can ensure the acquisition accuracy of brain wave signals.
Furthermore, the top of broach can set up to the curved surface structure, can reduce the stress concentration on broach top the broach top reduces the pressure that the user received when contacting with the scalp, guarantees user's use comfort.
Specifically, the conductive layer 12 covers the surface of the signal acquisition end 11, and the conductive layer 12 is a silver chloride coating, so that the conductive capability of the surface of the signal acquisition end 11 can be enhanced, and the electric signal induction performance of the signal acquisition end 11 can be improved. The silver chloride coating has good electrode stability, avoids the signal acquisition end 11 from generating a polarization phenomenon, and ensures the service life of the dry electrode 1.
Specifically, the shielding layer 13 is provided with a signal acquisition circuit 4 inside, the signal acquisition circuit 4 is electrically connected with the signal acquisition end 11 correspondingly, the signal acquisition circuit 4 is connected with the electric connection layer 131 in a matching manner based on a signal connection line, and the brain wave signal acquired by the signal acquisition end 11 is transmitted to the signal acquisition circuit 4 based on the electric connection layer 131 and the signal connection line.
Further, the signal acquisition circuit 4 may perform preliminary processing on the brain wave signal through the signal acquisition circuit.
Furthermore, the material of the electrical connection layer 131 is metal, and can transmit the electroencephalogram signal collected by the signal collection end 11 to the signal collection circuit 4 through a signal connection line.
Furthermore, the shielding layer 13 is made of insulating resin, so that the signal acquisition circuit 4 can be fixed, and the structural stability of the dry electrode 1 is ensured. The shielding layer 13 is made of an insulating material, and can protect the signal acquisition circuit 4, prevent the signal acquisition circuit 4 from being exposed in an external environment, avoid external electrical signals from interfering with the acquisition of brain wave signals, and ensure the accuracy of the dry electrode 1 in acquiring brain waves.
Specifically, fig. 3 shows a schematic structural diagram of a brain wave collecting device in an embodiment of the present invention, the brain wave collecting device includes a collecting device main body 2 and a plurality of dry electrodes 1, and the plurality of dry electrodes 1 are disposed on the collecting device main body 2.
Furthermore, the plurality of dry electrodes are arranged on the acquisition device main body 2, so that brain wave signals of different positions of a user can be acquired, and the accuracy of brain wave analysis is improved.
Specifically, collection device main part 2 is headgear type structure, a plurality of dry electrode 1 is fixed collection device main part 2 is last, the signal acquisition end 11 of dry electrode 1 sets up collection device main part 2's inside, the shielding layer 13 of dry electrode 1 sets up collection device main part 2's outside, the user sheathes in during collector 11, can pass through the shielding layer of dry electrode 1 adjusts, guarantees collection end and scalp in close contact with.
Further, the signal acquisition end 11 of the dry electrode 1 is arranged in the acquisition device body 2, so that the hand can be prevented from directly contacting the signal acquisition end 11 during operation in the using process, and the contact condition of the signal acquisition end 11 and the scalp of a user can be adjusted through the shielding layer 13 protruding out.
Specifically, the collecting device main body 2 is further provided with a bus interface 21 and a plurality of connecting wires 22, and the plurality of connecting wires 22 are connected with the plurality of dry electrodes 1 in a one-to-one correspondence manner. One end of the connecting wire 22 extends into the shielding layer 13 and is connected with the signal acquisition circuit 4 in a matching way, and the other end of the connecting wire 22 is connected with the bus interface 21 in a matching way. The bus interface 21 is used for connecting a brain wave analysis instrument, and transmitting the brain wave signals collected by the plurality of dry electrodes 1 to the brain wave analysis instrument for analysis processing based on the plurality of connecting wires 22.
Specifically, the looping department of collection device main part 2 is provided with straining device 23, straining device 23 includes the elastic cord, through the pulling the one end of elastic cord can with collection device main part 2 draws in and tighten, makes collection device main part 2 can be fixed, avoids gathering the brain wave in-process, the condition of contact failure appears.
Furthermore, the tightening mechanism 23 may be a snap-fit structure, that is, a clamping block is disposed on one side of the main body 2 of the collecting device, a plurality of matching slots are disposed on the other end of the main body 2 of the collecting device, and the clamping block is correspondingly matched with the matching slots and can be fixed in a snap-fit manner. When the collector 11 is used, a proper matching slot hole is selected according to the size of the head of a user for buckling connection, so that the collecting device main body 2 can be fastened on the head of the user.
Further, the tightening mechanism 23 may also be a rubber expansion band, a hook and loop fastener, etc. for fixing the collecting device body 2 on the head of the user.
Specifically, when the brain wave collecting device is used, the collecting device main body 2 is sleeved on the head of a user, the elastic mechanism 23 is used for enabling the collecting device main body 2 to be attached to the head of the user, the dry electrodes are arranged at one end outside the collecting device main body 2, the dry electrodes are adjusted, so that the collecting ends on the dry electrodes can be closely attached to the scalp of the user, the dry electrodes on the collecting device main body 2 are sequentially adjusted, and the elastic mechanism 23 is adjusted and fixed again after adjustment is completed, so that the collecting device main body 2 can be fastened to the head of the user, the close contact state of the collecting ends and the scalp of the user is maintained, and the accuracy of brain wave collection is guaranteed.
Furthermore, the collector 11 is connected with an electroencephalogram analyzer through the bus interface 21, the collector 11 is started, the signal collecting circuits 4 of the signal collecting circuits are arranged in the plurality of dry electrodes, and when electroencephalogram signals are collected, the influence of interference signals can be reduced, and the accuracy of the electroencephalogram signals can be improved. And the brain wave signals of the user are collected through the plurality of dry electrodes and are transmitted to a brain wave analysis instrument.
The embodiment of the utility model provides a dry electrode and brain wave collection system, the signal acquisition end 11 of being provided with the pectination structure of dry electrode can allocate the hair, guarantees signal acquisition end 11 closely laminates with the scalp, the material of signal acquisition end 11 is flexible conductive silica gel, when carrying out the collection of brain wave to the user, can reduce the contact pressure of dry electrode to the user scalp, improves user comfort in use. The collection device main part 2 of brain wave collection system is the headgear structure, can laminate user's head, can adjust according to user's head size through elasticity mechanism 23 simultaneously, and the cooperation is a plurality of dry electrode 1 in the collection device main part 2 and is carried out the brain wave and gather, can guarantee user's comfort level in use.
In addition, the dry electrode and the brain wave collecting device provided by the embodiment of the present invention are described in detail, and the principle and the implementation of the present invention should be explained by using specific examples, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. A dry electrode is characterized by comprising a signal acquisition end, a signal acquisition circuit and a shielding layer;
the signal acquisition circuit is fixed in the shielding layer and is correspondingly and electrically connected with the signal acquisition end;
one end of the signal acquisition end forms a comb-shaped structure based on a flexible conductive material, and the other end of the signal acquisition end is fixed on the shielding layer.
2. The dry electrode of claim 1, wherein the comb-like structure comprises a plurality of teeth.
3. The dry electrode according to claim 1, wherein an electrical connection layer is disposed on an end face of one end of the shielding layer, the other end of the signal collection terminal is fixed on the shielding layer based on the electrical connection layer, and the signal collection circuit is connected to the electrical connection layer based on a signal line.
4. The dry electrode of claim 1, wherein the signal collection tip comprises a conductive layer overlying a surface of the flexible conductive material.
5. The dry electrode of claim 4, wherein the conductive layer is a silver chloride coating.
6. The dry electrode of claim 1, wherein the shielding layer is an insulating resin.
7. The dry electrode of claim 1, wherein the flexible conductive material is a flexible conductive silicone.
8. A brain wave collecting device comprising a collecting device main body and a plurality of dry electrodes according to any one of claims 1 to 7;
the collecting device main body is of a head sleeve structure, and the plurality of dry electrodes are fixed on the collecting device main body;
the collection end of the dry electrode is arranged in the collection device body, and the shielding layer of the dry electrode is arranged outside the collection device body.
9. The brain wave collecting device according to claim 8, wherein the collecting device main body is provided with a take-up mechanism.
10. The brain wave collecting device according to claim 8, wherein a bus interface and a plurality of connection wires are provided on the collecting device body, and the dry electrode is connected to the bus interface based on the connection wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220709377.4U CN218606620U (en) | 2022-03-29 | 2022-03-29 | Dry electrode and brain wave acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220709377.4U CN218606620U (en) | 2022-03-29 | 2022-03-29 | Dry electrode and brain wave acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218606620U true CN218606620U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220709377.4U Active CN218606620U (en) | 2022-03-29 | 2022-03-29 | Dry electrode and brain wave acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218606620U (en) |
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- 2022-03-29 CN CN202220709377.4U patent/CN218606620U/en active Active
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