CN219270940U - Integrated active dry electrode and electroencephalogram acquisition device - Google Patents
Integrated active dry electrode and electroencephalogram acquisition device Download PDFInfo
- Publication number
- CN219270940U CN219270940U CN202223249065.9U CN202223249065U CN219270940U CN 219270940 U CN219270940 U CN 219270940U CN 202223249065 U CN202223249065 U CN 202223249065U CN 219270940 U CN219270940 U CN 219270940U
- Authority
- CN
- China
- Prior art keywords
- dry electrode
- voltage follower
- electrically connected
- integrated active
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model discloses an integrated active dry electrode, which comprises a base, wherein the base is provided with a plurality of electrodes; a dry electrode comprising a plurality of measurement contacts; the first voltage follower is detachably arranged in the base; the connecting piece is arranged between the base and the dry electrode, and the first voltage follower is electrically connected with the measuring contact through the connecting piece. According to the utility model, through the integrated design of the dry electrode and the voltage follower, the anti-interference capability of the integrated active dry electrode for acquiring the brain electrical signals is enhanced, and the signal-to-noise ratio and accuracy of the brain electrical signals acquired by the dry electrode are improved, so that the integrated active dry electrode can be better applied to wearable equipment.
Description
Technical Field
The utility model belongs to the technical field of electroencephalogram acquisition, and particularly relates to an integrated active dry electrode and an electroencephalogram acquisition device.
Background
In the current brain-computer interface application, the most critical item is the acquisition of brain-computer signals, and how to acquire the brain-computer signals by using electrodes as accurately as possible without distortion is very important. Currently, electrodes for electroencephalogram signal acquisition are mainly classified into three categories: wet electrodes, gel electrodes, and dry electrodes. The wet electrode has good collection precision, but the hair needs to be washed after each test, and the wet electrode is more complicated to use. The gel electrode is convenient to use, but is expensive, and a specially-adapted brain electric cap is needed.
The dry electrode is easy to wear, can be reused, and can overcome the defects of the wet electrode and the gel electrode. However, as the dry electrode is in direct contact with the cerebral cortex, the contact impedance is very large, the accuracy of acquiring the brain electrical signals is poor, and the signal to noise ratio is low.
Therefore, in order to solve the above-mentioned problems, it is necessary to provide an integrated active dry electrode and electroencephalogram acquisition device.
Disclosure of Invention
In view of the above, the present utility model aims to provide an integrated active dry electrode and electroencephalogram acquisition device.
In order to achieve the above object, an embodiment of the present utility model provides the following technical solution:
an integrated active dry electrode, the integrated active dry electrode comprising:
a base;
a dry electrode comprising a plurality of measurement contacts;
the first voltage follower is detachably arranged in the base;
the connecting piece is arranged between the base and the dry electrode, and the first voltage follower is electrically connected with the measuring contact through the connecting piece.
In an embodiment, the first voltage follower includes a first operational amplifier electrically connected between the power supply voltage and the ground potential, a first input terminal of the first operational amplifier is electrically connected to the measurement contact in the dry electrode, and a second input terminal of the first operational amplifier is connected to the output terminal.
In an embodiment, the first voltage follower further includes a first resistor, one end of the first resistor is connected to the output end of the first operational amplifier, and the other end of the first resistor is grounded; and/or the number of the groups of groups,
the first voltage follower further comprises a plurality of first capacitors connected in parallel, and the first capacitors are electrically connected between the power supply voltage and the ground potential.
In one embodiment, the dry electrode further comprises a reference contact; the integrated active dry electrode further comprises a second voltage follower, the second voltage follower is detachably arranged in the base, and the second voltage follower is electrically connected with the reference contact through the connecting piece.
In an embodiment, the second voltage follower includes a second operational amplifier electrically connected between the power supply point and the ground potential, a first end of the second operational amplifier is electrically connected to the reference contact in the dry electrode, and a second input end of the second operational amplifier is connected to the output end.
In an embodiment, the second voltage follower further includes a second resistor, one end of the second resistor is connected to the output end of the second operational amplifier, and the other end of the second resistor is grounded; and/or the number of the groups of groups,
the second voltage follower further comprises a plurality of second capacitors connected in parallel, and the second capacitors are electrically connected between the power supply voltage and the ground potential.
The connecting piece is a primary and secondary knot, the primary and secondary knot is fixedly arranged in the base and is electrically connected with the voltage follower, the primary and secondary knot comprises a connecting part fixedly arranged in the base and a protruding part which is arranged in the connecting part and is partially exposed out of the base, one end of the primary knot is connected with the protruding part in a buckling manner, and the other end of the primary knot is connected with the dry electrode in a buckling manner.
The technical scheme provided by the other embodiment of the utility model is as follows:
an electroencephalogram acquisition apparatus, comprising:
a plurality of integrated active dry electrodes as described above;
the brain electricity acquisition module comprises a first input pin, and the first input pin is electrically connected with the first voltage follower.
In an embodiment, the electroencephalogram acquisition module further includes a first power pin and a first ground pin, and the first voltage follower is electrically connected between the first power pin and the first ground pin.
In an embodiment, the integrated active dry electrode further includes a reference contact and a second voltage follower electrically connected to the reference contact, and the electroencephalogram acquisition module further includes a second input pin, and the second input pin is electrically connected to the second voltage follower.
In an embodiment, the electroencephalogram acquisition module further includes a power pin and a ground pin, and the second voltage follower is electrically connected between the power pin and the ground pin.
In an embodiment, the electroencephalogram acquisition device further comprises an RLD electrode, the electroencephalogram acquisition module further comprises an RLD pin, and the RLD pin is electrically connected with the RLD electrode.
The utility model has the following beneficial effects:
according to the utility model, through the integrated design of the dry electrode and the voltage follower, the anti-interference capability of the integrated active dry electrode for acquiring the brain electrical signals is enhanced, and the signal-to-noise ratio and accuracy of the brain electrical signals acquired by the dry electrode are improved, so that the integrated active dry electrode can be better applied to wearable equipment;
the utility model provides an integrated active dry electrode, which can be selectively matched with the dry electrode through a detachable voltage follower to realize flexible application, and the dry electrode adopts independent design, can be directly connected into a hardware system for use in acquiring brain electrical signals, and has strong applicability;
the utility model provides an electroencephalogram acquisition device which has higher accuracy of acquiring signals, better signal stability and higher signal-to-noise ratio; meanwhile, the electroencephalogram acquisition device is simple and convenient to wear, low in price, reusable and wide in applicability.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
Fig. 1 is a schematic perspective view of an integrated active dry electrode according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of an explosion structure of an integrated active dry electrode according to an embodiment of the present utility model;
FIG. 3 is a schematic circuit diagram of a first voltage follower according to a first embodiment of the present utility model;
FIG. 4 is a schematic circuit diagram of a second voltage follower according to a first embodiment of the utility model;
fig. 5 is a schematic circuit diagram of an electroencephalogram acquisition device according to a second embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in place when the product of the application is used, or those conventionally understood by those skilled in the art, merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the embodiments of the present utility model, it should be further noted that, as used herein, the terms "first," "second," and the like do not denote any order or sequence, but rather are merely used to distinguish one element or operation from another.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The technical scheme of the utility model will be described below with reference to the accompanying drawings.
Embodiment one:
referring to fig. 1 and 2, a first embodiment of the present utility model discloses an integrated active dry electrode, which includes a base 1; a dry electrode 2, the dry electrode 2 comprising a number of measurement contacts 21; the first voltage follower 31, the first voltage follower 31 is detachably installed in the base 1; the connecting piece 4, the connecting piece 4 is located between base 1 and dry electrode 2, and is connected through connecting piece 4 electrical behavior between first voltage follower 31 and the measurement contact 21.
According to the design, the integrated active dry electrode in the embodiment shortens the length of a lead between the dry electrode 2 and the voltage follower through the integrated design of the dry electrode 2 and the voltage follower, enhances the anti-interference capability of the integrated active dry electrode for acquiring the brain electrical signals, improves the signal-to-noise ratio of the dry electrode 2 for acquiring the brain electrical signals, and can be better applied to wearable equipment; meanwhile, the integrated active dry electrode can be directly connected with the electroencephalogram acquisition module 5 for use, and the applicability is strong.
Specifically, referring to fig. 3, the first voltage follower 31 in the present embodiment includes a first operational amplifier A1, the first operational amplifier A1 is electrically connected between the power supply voltage and the ground potential, a first input terminal of the first operational amplifier A1 is electrically connected to the measurement contact 21 in the dry electrode 2, and a second input terminal is connected to the output terminal.
The circuit connection relationship of the first voltage follower 31 in this embodiment is as follows: the positive power supply end of the first operational amplifier A1 is connected with the analog power supply AVDD, the negative power supply end of the first operational amplifier A1 is grounded AVSS, the non-inverting input end of the first operational amplifier A1 is electrically connected with the measurement contact 21 in the dry electrode 2, the inverting input end of the first operational amplifier A1 is connected with the output end, and the output end of the first operational amplifier A1 serves as the output end of the first voltage follower 31.
According to the design, the measurement contact 21 in the embodiment is in direct contact with the cerebral cortex to collect the brain electrical signals, and the measurement contact 21 is electrically connected with the first voltage follower 31 to form an integrated active dry electrode due to the large contact impedance, the input impedance of the first voltage follower 31 is large, the output impedance is small, the impedance transformation function is achieved, the signal-to-noise ratio and the stability of the brain electrical signals collected by the measurement contact 21 are guaranteed, and meanwhile, the interference of high-frequency sampling of the brain electrical collection module 5 on a signal source can be reduced.
Preferably, referring to fig. 2 in combination with fig. 4, the dry electrode 2 in this embodiment further comprises a reference contact 22; the integrated active dry electrode further comprises a second voltage follower 32, the second voltage follower 32 is detachably mounted in the base 1, and the second voltage follower 32 is electrically connected with the reference contact 22 through a connecting piece 4.
The design is beneficial to the formation of contrast between the brain electrical signals collected by the measurement contact 21 and the brain electrical reference signals collected by the reference contact 22, is convenient for more accurately restoring the original brain electrical signals, and improves the accuracy of the integrated active dry electrode for collecting the brain electrical signals.
Further, referring to fig. 4, the second voltage follower 32 in the present embodiment includes a second operational amplifier A2, the second operational amplifier A2 is electrically connected between the power supply point and the ground potential, a first end of the second operational amplifier A2 is electrically connected to the reference contact 22 in the dry electrode 2, and a second input end is connected to the output end.
The circuit connection relationship of the second voltage follower 32 in this embodiment is as follows: the positive power supply end of the second operational amplifier A2 is connected to the analog power supply AVDD, the negative power supply end of the second operational amplifier A2 is grounded AVSS, the non-inverting input end of the second operational amplifier A2 is electrically connected to the reference contact 22 in the dry electrode 2, the inverting input end of the second operational amplifier A2 is connected to the output end, and the output end of the second operational amplifier A2 serves as the output end of the second voltage follower 32.
According to the design, the reference contact 22 in the embodiment is in direct contact with the cerebral cortex to acquire an electroencephalogram reference signal, and the reference contact 22 is electrically connected with the second voltage follower 32 due to large contact impedance, so that the second voltage follower 32 plays a role in impedance transformation, and the signal-to-noise ratio and stability of the electroencephalogram reference signal acquired by the measurement contact 21 are ensured.
Referring to fig. 3 and 4, the first voltage follower 31 in the present embodiment further includes a first resistor R1, one end of the first resistor R1 is connected to the output end of the first operational amplifier A1, and the other end of the first resistor R1 is grounded; and/or, the first voltage follower 31 further includes a plurality of first capacitors C1 and C2 connected in parallel, and the first capacitors C1 and C2 are electrically connected between the power supply voltage and the ground potential.
Further, the second voltage follower 32 in the present embodiment further includes a second resistor R2, one end of the second resistor R2 is connected to the output end of the second operational amplifier A2, and the other end of the second resistor R2 is grounded; and/or, the second voltage follower 32 further includes a plurality of second capacitors C3, C4 connected in parallel, and the second capacitors C3, C4 are electrically connected between the power supply voltage and the ground potential.
The base 1 of the embodiment is an insulating base 1, a first resistor R1 is connected to the output end of the first operational amplifier A1, and a second resistor R2 is connected to the output end of the second operational amplifier A2, the first resistor R1 and the second resistor R2 are grounded, so that the shielding effect is enhanced, and a discharging path is provided, and the first capacitor C1, C2 and the second capacitor C3, C4 are used for filtering.
In order to shorten the length of the transmission line between the follower and the dry electrode 2, reduce the interference in the acquisition process, and improve the quality of the acquired electroencephalogram signals, referring to fig. 2, the connector 4 in this embodiment is a snap fastener, the snap fastener 41 is fixedly installed in the base 1 and electrically connected with the voltage follower, the snap fastener 41 includes a connecting portion 411 fixedly installed in the base 1 and a protruding portion 412 which is provided in the connecting portion 411 and partially exposes the base 1, one end of the snap fastener 42 is in snap connection with the protruding portion 412, and the other end of the snap fastener 42 is in snap connection with the dry electrode 2.
The connection manner in this embodiment is: firstly, a pair of snap buttons 41 of the snap buttons are fixedly arranged in an insulating base 1, and a middle protruding part 412 is exposed so as to be connected with the snap buttons 42, a circuit board of a first voltage follower 31 and a second voltage follower 32 is placed in the base 1, a bonding pad is reserved on the top surface of the circuit board, the bonding pad is electrically connected with the snap buttons 41, and the snap buttons 42 in the snap buttons are arranged between the snap buttons 41 and a dry electrode 2, so that the dry electrode 2 is electrically connected with the second voltage follower 32.
According to the design, the dry electrode 2 and the voltage follower in the embodiment are connected together through the snap fastener, so that the integrated active dry electrode is realized, the anti-interference capability of the integrated active dry electrode for acquiring the brain electrical signals is enhanced, and the occurrence of the condition that the signal-to-noise ratio of the acquired brain electrical signals is reduced to a certain extent is effectively avoided.
The integrated active dry electrode in the embodiment adopts an independent design, and can be directly embedded into the wearable equipment through the snap fastener and used by accessing a hardware system through a lead, wherein the wearable equipment is equipment for acquiring brain electrical signals such as an electroencephalogram cap.
Embodiment two:
referring to fig. 5, a second embodiment of the present utility model discloses an electroencephalogram acquisition apparatus, which includes a plurality of integrated active dry electrodes as described above; the electroencephalogram acquisition module 5, the electroencephalogram acquisition module 5 comprises a first input pin, and the first input pin is electrically connected with the first voltage follower 31.
According to the design, the electroencephalogram acquisition device acquires the electroencephalogram signals by using the integrated active dry electrode, and has the advantages of higher accuracy, better acquired signal stability and higher signal-to-noise ratio; meanwhile, the electroencephalogram acquisition device is simple and convenient to wear, low in price, reusable and wide in applicability.
The electroencephalogram acquisition module 5 in this embodiment further includes a first power pin and a first ground pin, and the first voltage follower 31 is electrically connected between the first power pin and the first ground pin.
According to the design, the first voltage follower 31 and the electroencephalogram acquisition module 5 in the embodiment share the power supply and the ground, so that the voltage amplitude of the electroencephalogram signals can be kept consistent under the same reference voltage, and unnecessary measurement deviation is reduced.
The integrated active dry electrode in this embodiment further includes a reference contact 22 and a second voltage follower 32 electrically connected to the reference contact 22, and the electroencephalogram acquisition module 5 further includes a second input pin, where the second input pin is electrically connected to the second voltage follower 32.
According to this design, the electroencephalogram acquisition device in this embodiment is provided with the measurement contact 21 and the reference contact 22, and the measurement contact 21 and the reference contact 22 are respectively electrically connected with the first voltage follower 31 and the second voltage follower 32, so that the accuracy of the acquired electroencephalogram signals and electroencephalogram reference signals can be ensured, and the original electroencephalogram signals can be restored more accurately when the electroencephalogram acquisition module 5 processes the signals.
Preferably, the electroencephalogram acquisition module 5 in this embodiment further includes a second power pin and a second ground pin, and the second voltage follower 32 is electrically connected between the second power pin and the second ground pin. The second voltage follower 32 and the electroencephalogram acquisition module 5 share power and ground, and unnecessary measurement bias can be further reduced.
The electroencephalogram acquisition device in the embodiment further comprises an RLD electrode 6, and the electroencephalogram acquisition module 5 further comprises an RLD pin which is electrically connected with the RLD electrode 6.
By arranging the RLD electrode 6 in the electroencephalogram acquisition device, the RLD electrode 6 is directly contacted with the cerebral cortex, so that 50Hz and/or 60Hz common-mode interference of a human body and an external environment is weakened, and the accuracy of acquiring the electroencephalogram is improved.
The technical scheme shows that the utility model has the following beneficial effects:
according to the utility model, through the integrated design of the dry electrode and the voltage follower, the anti-interference capability of the integrated active dry electrode for acquiring the brain electrical signals is enhanced, and the signal-to-noise ratio and accuracy of the brain electrical signals acquired by the dry electrode are improved, so that the integrated active dry electrode can be better applied to wearable equipment;
the utility model provides an integrated active dry electrode, which can be selectively matched with the dry electrode through a detachable voltage follower to realize flexible application, and the dry electrode adopts independent design, can be directly connected into a hardware system for use in acquiring brain electrical signals, and has strong applicability;
the utility model provides an electroencephalogram acquisition device which has higher accuracy of acquiring signals, better signal stability and higher signal-to-noise ratio; meanwhile, the electroencephalogram acquisition device is simple and convenient to wear, low in price, reusable and wide in applicability.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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 disclosure describes embodiments in terms of embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the embodiments may be combined appropriately to form other embodiments that can be understood by those skilled in the art.
Claims (12)
1. An integrated active dry electrode, characterized in that the integrated active dry electrode comprises:
a base;
a dry electrode comprising a plurality of measurement contacts;
the first voltage follower is detachably arranged in the base;
the connecting piece is arranged between the base and the dry electrode, and the first voltage follower is electrically connected with the measuring contact through the connecting piece.
2. The integrated active dry electrode of claim 1, wherein the first voltage follower comprises a first operational amplifier electrically connected between a supply voltage and ground, a first input of the first operational amplifier electrically connected to a measurement contact in the dry electrode, and a second input connected to an output.
3. The integrated active dry electrode of claim 2 wherein the first voltage follower further comprises a first resistor, one end of the first resistor is connected to the output of the first operational amplifier, and the other end of the first resistor is grounded; and/or the number of the groups of groups,
the first voltage follower further comprises a plurality of first capacitors connected in parallel, and the first capacitors are electrically connected between the power supply voltage and the ground potential.
4. The integrated active dry electrode of claim 1 wherein the dry electrode further comprises a reference contact; the integrated active dry electrode further comprises a second voltage follower, the second voltage follower is detachably arranged in the base, and the second voltage follower is electrically connected with the reference contact through the connecting piece.
5. The integrated active dry electrode of claim 4, wherein the second voltage follower comprises a second operational amplifier electrically connected between a power supply point and ground potential, a first end of the second operational amplifier electrically connected to a reference contact in the dry electrode, and a second input end connected to the output end.
6. The integrated active dry electrode of claim 5 wherein the second voltage follower further comprises a second resistor, one end of the second resistor is connected to the output of the second operational amplifier, and the other end of the second resistor is grounded; and/or the number of the groups of groups,
the second voltage follower further comprises a plurality of second capacitors connected in parallel, and the second capacitors are electrically connected between the power supply voltage and the ground potential.
7. The integrated active dry electrode of claim 1, wherein the connector is a snap fastener, the snap fastener is fixedly mounted in the base and electrically connected to the voltage follower, the snap fastener comprises a connecting portion fixedly mounted in the base and a protruding portion disposed in the connecting portion and partially exposed out of the base, one end of the snap fastener is in snap connection with the protruding portion, and the other end of the snap fastener is in snap connection with the dry electrode.
8. An electroencephalogram acquisition device, characterized in that the electroencephalogram acquisition device comprises:
a plurality of integral active dry electrodes as claimed in any one of claims 1 to 7;
the brain electricity acquisition module comprises a first input pin, and the first input pin is electrically connected with the first voltage follower.
9. The electroencephalogram acquisition device according to claim 8, wherein the electroencephalogram acquisition module further comprises a first power supply pin and a first ground pin, the first voltage follower being electrically connected between the first power supply pin and the first ground pin.
10. The electroencephalogram acquisition device according to claim 8, wherein the integrated active dry electrode further comprises a reference contact and a second voltage follower electrically connected with the reference contact, the electroencephalogram acquisition module further comprises a second input pin, and the second input pin is electrically connected with the second voltage follower.
11. The electroencephalogram acquisition device according to claim 10, wherein the electroencephalogram acquisition module further comprises a second power supply pin and a second ground pin, the second voltage follower being electrically connected between the second power supply pin and the second ground pin.
12. The electroencephalogram acquisition device according to claim 8, further comprising an RLD electrode, the electroencephalogram acquisition module further comprising an RLD pin, the RLD pin being electrically connected with the RLD electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223249065.9U CN219270940U (en) | 2022-12-05 | 2022-12-05 | Integrated active dry electrode and electroencephalogram acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223249065.9U CN219270940U (en) | 2022-12-05 | 2022-12-05 | Integrated active dry electrode and electroencephalogram acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219270940U true CN219270940U (en) | 2023-06-30 |
Family
ID=86922707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223249065.9U Active CN219270940U (en) | 2022-12-05 | 2022-12-05 | Integrated active dry electrode and electroencephalogram acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219270940U (en) |
-
2022
- 2022-12-05 CN CN202223249065.9U patent/CN219270940U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sullivan et al. | A low-noise, non-contact EEG/ECG sensor | |
| Chi et al. | Non-contact low power EEG/ECG electrode for high density wearable biopotential sensor networks | |
| CN101199418A (en) | Brain impedance detection circuitry and EEG checking device | |
| KR100773447B1 (en) | Electrode for living body and device for detecting living signal | |
| CN107550462B (en) | Sleep monitoring circuit and sleep monitoring device | |
| CN107822619A (en) | A kind of electro-physiological signals detection means based on flexible non-contact electrode | |
| Kappel et al. | Study of impedance spectra for dry and wet EarEEG electrodes | |
| CN219270940U (en) | Integrated active dry electrode and electroencephalogram acquisition device | |
| CN110916655B (en) | Portable electroencephalogram acquisition system | |
| CN109044345A (en) | A kind of patch type dynamic electrocardiogram recorder | |
| CN208740965U (en) | A kind of electro-physiological signals detection device based on flexible non-contact electrode | |
| CN106951065B (en) | 40-lead brain-computer interface information acquisition system | |
| Yang et al. | A multi-parameter bio-electric ASIC sensor with integrated 2-wire data transmission protocol for wearable healthcare system | |
| CN113925510A (en) | Electroencephalogram triggering interaction system | |
| CN109893128A (en) | A kind of ultralow frequency brain wave detector and its determination method | |
| CN209153666U (en) | A kind of patch type dynamic electrocardiogram recorder | |
| CN215739016U (en) | Front-end circuit based on brain-computer interface BCI | |
| CN219039694U (en) | Brain-computer interface sensing and calculating integrated device | |
| CN214632169U (en) | Standard electrocardiosignal acquisition module | |
| CN207928316U (en) | Biological electrical signal collecting device | |
| CN207396683U (en) | A kind of device of measuring circuit plate ripple and noise signal | |
| CN216090508U (en) | High-voltage-resistance instrument amplifier for bioelectricity signals | |
| CN210749203U (en) | Brain wave signal analyzer based on collecting electrodes | |
| CN206675524U (en) | Eeg signal acquisition system | |
| CN112315487B (en) | Electroencephalogram signal acquisition system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |