CN109893129A - A kind of dry electrode and wearable brain electric detection means adjusting depth using air bag - Google Patents
A kind of dry electrode and wearable brain electric detection means adjusting depth using air bag Download PDFInfo
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- CN109893129A CN109893129A CN201910284509.6A CN201910284509A CN109893129A CN 109893129 A CN109893129 A CN 109893129A CN 201910284509 A CN201910284509 A CN 201910284509A CN 109893129 A CN109893129 A CN 109893129A
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Abstract
The invention discloses a kind of dry electrodes and wearable brain electric detection means that depth is adjusted using air bag, air bag is accompanied between the sleeve and probe base of dry electrode, by being inflated or being vented to air bag, the height of air bag can be continuously adjusted, so as to continuously adjust the depth of probe.For same user, when dry electrode is in skull salient position, the height of air bag can be shortened so as to shorten the effective length of dry electrode by gas in reduction air bag；When dry electrode is in skull recessed position, the effective length of dry electrode can be increased with this by being filled with gas into air bag come the height of augmented airbag, it thereby may be ensured that coming into full contact with for dry electrode and the scalp of user, and then can reduce input impedance, improve the quality of collected EEG signals.For different users, the height of air bag can be changed by being inflated or being vented to air bag to change the effective length of dry electrode, the skull of probe fitting different shape and size can be made.
Description
Technical field
The present invention relates to technical field of integrated circuits more particularly to a kind of dry electrodes and wearing that depth is adjusted using air bag
Formula EEG checking device.
Background technique
Brain is the important component of mankind's central nervous system, is the material base of all thinking activities, it is to people
Body-sensing feel organ collection to information integrated, recorded, and make a response to stimulation.Cerebral nerve activity is that the mankind think
The movable performances such as dimension, cognition.
It detects there are many kinds of the movable methods of cerebral nerve, wherein electroencephalogram (electroencephalography, EEG)
Electric discharge phenomena when method refers to using nervous activity directly use the electric field strong and weak of electrode record brain.Since EEG is invaded using non-
Enter formula electrode directly to measure scalp electric signal, has the advantages that cheap and temporal resolution is high, therefore, this method
It is widely used.
Currently, EEG have been used to epilepsy detect automatically, stroke patient treatment, anaesthesia depth detection, sleep stage and each
In the diagnosis and prognosis detection of kind cranial vascular disease.In addition to medicine detects, EEG is also applicable in smart home, emotion recognition, tired
In the living scenes such as labor detection.Since EEG signals are weaker, only several microvolts are to tens microvolts, and randomness is stronger, easily by
To the interference of external environment, therefore, very high requirement is proposed to EEG signals detection device.
The electrode of existing detection EEG signals is divided into dry electrode and two kinds of wet electrode.Brain telecommunications is being detected using wet electrode
Number when, needing that electrode cream is added between wet electrode and scalp reduces impedance, when using dry electrode detection EEG signals, generally
It is contacted using the metal probe in dry electrode with scalp.Since the skull of different users is of different sizes, the head of same people
Also and non-critical spherical shape, therefore, often will appear certain electrodes positioned at skull recess can not come into full contact with bone with scalp
The phenomenon that.Also, if there is excessive hair exists, also electrode can be made to be difficult to contact with scalp, cause the phenomenon that impedance is excessive.
If impedance is excessive, it may be difficult to collect EEG signals, generate the diagnostic result of mistake, generate greatly danger to the health of patient
Evil.If it is special customized according to the progress of the skull shape of user, and a large amount of financial resources and time could be expended.
Summary of the invention
In view of this, the present invention provides a kind of dry electrodes and wearable brain electro-detection dress for adjusting depth using air bag
It sets, to provide a kind of dry electrode that can arbitrarily adjust depth of probe.
Therefore, the present invention provides a kind of dry electrodes that depth is adjusted using air bag, comprising:
The hollow sleeve with both wings, the probe reed on one wing of sleeve, probe base are fixed on the spy
Inflatable bladders between needle pedestal and the sleeve, with the air bag perforation connection, through the sleeve hollow position and from
Gas ducting with charge valve, is fixed on the probe base backwards to multiple probes of the one side of the air bag, flexible
First conducting wire, hollow firm banking, the conducting wire reed in the firm banking, and drawn from the firm banking
Second conducting wire；Wherein,
The sleeve, the air bag, the gas ducting, the probe base and each probe are fixedly connected with composition
Integral structure；
First conducting wire, for each probe to be electrically connected with the probe reed respectively；
The firm banking, for the integral structure to be fixed on electrode cap；The integral structure is through described solid
Determine the hollow position of pedestal；
The conducting wire reed, for the integral structure be fixed on the electrode cap and the integral structure rotate to
When the position that the probe reed and the conducting wire reed contact with each other, it is electrically connected with the probe reed；
Second conducting wire, for the conducting wire reed and signal processing circuit to be electrically connected；
After the integral structure is fixed on the electrode cap by the firm banking, make institute by rotating the sleeve
It states integral structure to rotate to the probe reed and conducting wire reed electric connection, realizes normal mode of operation.
In one possible implementation, in above-mentioned dry electrode provided by the invention, the firm banking, comprising:
Upper bed-plate and lower bottom base；Wherein,
The inner surface of the upper bed-plate is provided with internal screw thread, and the lower bottom base is bolt arrangement, the bolt arrangement it is outer
Surface is provided with external screw thread, and the internal screw thread and the external screw thread cooperate for the lower bottom base to be threaded in or out the upper bottom
Seat；
Annular clamping plate is provided in the upper bed-plate, for the both wings of the sleeve to be stuck in the upper bed-plate annular clamping plate
Backwards to the side of the lower bottom base；
The upper bed-plate and the lower bottom base are hollow structure, and the integral structure runs through the upper bed-plate and the bottom
The hollow position of seat；
The conducting wire reed is located in the upper bed-plate, and second conducting wire is drawn from the upper bed-plate.
In one possible implementation, in above-mentioned dry electrode provided by the invention, the probe reed with it is described
Sleeve mutually insulated, positioned at one aerofoil of sleeve to the side of the probe base；The conducting wire reed is semi-circular, is located at
Side from the marmon clamp backboard to the lower bottom base and with the upper bed-plate mutually insulated；
Further include: positioned at another aerofoil of the sleeve to the probe base side and be electrically connected with the sleeve the
One ground reed, positioned at the upper bed-plate marmon clamp backboard to the semiorbicular second ground reed of the lower bottom base side and from institute
It states upper bed-plate and draws the first ground wire being electrically connected respectively with the upper bed-plate and second ground reed；Wherein,
Second ground reed and the conducting wire reed mutually insulated, second ground reed are adjacent with the conducting wire reed
The distance between two ends be less than first ground reed along the width of the circumferencial direction of the annular clamping plate；
The reference ground of first ground wire and the signal processing circuit is electrically connected；
After the integral structure is fixed on the electrode cap by the upper bed-plate and lower bottom base cooperation, pass through rotation
Turning the sleeve rotates the integral structure to the probe reed and conducting wire reed electric connection and first ground
Reed and second ground reed are electrically connected, and realize normal mode of operation；Alternatively, making the one by rotating the sleeve
Structure is rotated to first ground reed to be electrically connected with second ground reed and the conducting wire reed respectively, realizes drift school
Quasi-mode.
In one possible implementation, in above-mentioned dry electrode provided by the invention, each probe, comprising:
The probe rod that is fixed on the probe base is fixed on the probe rod backwards to the spring of the probe base side and solid
Due to the spring backwards to the probe of the probe rod side.
In one possible implementation, in above-mentioned dry electrode provided by the invention, the material of the probe is plating
Golden material.
The present invention also provides a kind of wearable brain electric detection means, comprising: signal processing circuit, electrode cap and fixation
In multiple dry electrodes on the electrode cap；Wherein,
Each dry electrode is above-mentioned dry electrode provided by the invention；
The corresponding position of the electrode cap and each dry electrode offers the hole for placing electrode.
In one possible implementation, in above-mentioned EEG checking device provided by the invention, further includes: line concentration connects
Mouthful；
The collection line interface is for pooling together the second conducting wire of each dry electrode.
In one possible implementation, in above-mentioned EEG checking device provided by the invention, each dry electrode
The first ground wire by the line concentration Interface integration be second ground wire.
In one possible implementation, in above-mentioned EEG checking device provided by the invention, further includes: necklace；
Power supply is provided in the necklace；
The signal processing circuit is integrated in the necklace.
The above-mentioned dry electrode and wearable brain electric detection means that depth is adjusted using air bag provided by the invention, one wing of sleeve
On probe reed be connected with probe by the first conducting wire, probe reed passes through the conducting wire reed and the second conducting wire in firm banking
It is connected, in this way, EEG signals can successively pass through when probe contacts the EEG signals of detection user with the scalp of user
Probe, the first conducting wire, probe reed, conducting wire reed and the second wire transmission are realized to signal processing circuit to EEG signals
Detection.Inflatable bladders, sleeve, air bag, gas ducting, probe base and each probe are accompanied between sleeve and probe base
It is structure as a whole, air bag is inflated or is vented by charge valve, the height of air bag can be continuously adjusted, so as to continuous
Adjust the depth of probe.It can be by reducing in air bag when dry electrode is in the position of skull protrusion for same user
Portion's gas shortens the height of air bag so as to shorten the effective length of dry electrode；When dry electrode is in the position of skull recess,
The effective length that dry electrode can be increased with this by being filled with gas into air bag come the height of augmented airbag, thereby may be ensured that
Dry electrode and the scalp of user come into full contact with, and then can reduce input impedance, improve the matter of collected EEG signals
Amount.For different users, the height of air bag can be changed by being inflated or being vented to air bag to change dry electrode
Effective length, can make probe fitting different shape and size skull.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of the dry electrode provided in an embodiment of the present invention that depth is adjusted using air bag；
Fig. 2 is the structural schematic diagram after splitting each component in Fig. 1；
Fig. 3 a is the structural schematic diagram before being inflated to air bag；
Fig. 3 b is the structural schematic diagram after being inflated to air bag；
Fig. 4 is that the second structural representation of the dry electrode provided in an embodiment of the present invention that depth is adjusted using air bag is corresponding
Structural schematic diagram after fractionation；
Fig. 5 is the structural schematic diagram of wearable brain electric detection means provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the application embodiment, the technical solution in the application embodiment is carried out clear
Chu, complete description, it is clear that described embodiment is merely possible to illustrate, and is not intended to limit the application.
A kind of dry electrode adjusting depth using air bag provided in an embodiment of the present invention, as depicted in figs. 1 and 2 (in order to just
In identification, Fig. 2 is the structure after splitting each component shown in FIG. 1), comprising:
The hollow sleeve 1 with both wings (A and B as shown in Figure 2) is located on 1 one wing of sleeve (A as shown in Figure 2)
Probe reed 2, probe base 3, the inflatable bladders 4 being fixed between probe base 3 and sleeve 1, connected with the perforation of air bag 4,
Through 1 hollow position of sleeve and the gas ducting 5 of included charge valve, be fixed on probe base 3 backwards to air bag 4 one side it is multiple
Probe 6, flexible first conducting wire 7, hollow firm banking 8, the conducting wire reed 9 in firm banking 8, and from admittedly
Determine the second conducting wire 10 of the extraction of pedestal 8；Wherein,
Sleeve 1, air bag 4, gas ducting 5, probe base 3 and each probe 6 are fixedly connected and are integrally formed structure；
First conducting wire 7, for each probe 6 to be electrically connected with probe reed 2 respectively；
Firm banking 8, for integral structure to be fixed on electrode cap；As shown in Figure 1, integral structure runs through firm banking
8 hollow position；
Conducting wire reed 9, for being fixed on electrode cap in integral structure and integral structure is rotated to probe reed 2 and conducting wire
When the position that reed 9 contacts with each other, it is electrically connected with probe reed 2；
Second conducting wire 10, for conducting wire reed 9 and signal processing circuit to be electrically connected；
After integral structure is fixed on electrode cap by firm banking 8, rotate integral structure to spy by turnbarrel 1
Needle spring piece 2 and conducting wire reed 9 are electrically connected, and realize normal mode of operation.
Above-mentioned dry electrode provided in an embodiment of the present invention, the probe reed on one wing of sleeve pass through the first conducting wire and probe phase
Even, probe reed is connected by the conducting wire reed in firm banking with the second conducting wire, in this way, the scalp in probe and user connects
When the EEG signals of touching detection user, EEG signals can successively pass through probe, the first conducting wire, probe reed, conducting wire reed
With the second wire transmission to signal processing circuit, the detection to EEG signals is realized.Accompanying between sleeve and probe base can
Air bag, sleeve, air bag, gas ducting, probe base and each probe are structure as a whole, and are carried out by charge valve to air bag
Inflation or exhaust, can continuously adjust the height of air bag, so as to continuously adjust the depth of probe.For same user,
When dry electrode be in skull protrusion position when, can by reduce inside air bag gas come shorten the height of air bag so as to shorten
The effective length of dry electrode；When dry electrode is in the position of skull recess, can be increased by being filled with gas into air bag
The height of air bag increases the effective length of dry electrode with this, thereby may be ensured that sufficiently connecing for dry electrode and the scalp of user
Touching, and then can reduce input impedance, improve the quality of collected EEG signals.It, can be by right for different users
Air bag is inflated or is vented to change the height of air bag to change the effective length of dry electrode, and probe fitting can be made different
The skull of shape and size.
In the specific implementation, in above-mentioned dry electrode provided in an embodiment of the present invention, as shown in Fig. 2, flexible
One conducting wire 7 specifically can be by being wound up as helical structure (such as telephone wire) Lai Shixian, in this way, as shown in Figure 3a, to air bag 4
Before inflation, the first conducting wire 7 is nature, and as shown in Figure 3b, after inflating to air bag 4, the first conducting wire 7 is to stretch shape
State.Certainly, the elasticity of the first conducting wire 7 is not limited to a kind of this way of realization, can also by can be realized elasticity other
Mode realizes, it is not limited here.
In the specific implementation, in above-mentioned dry electrode provided in an embodiment of the present invention, the included charge valve tool of gas ducting
Body can be the structure of airtight core, it is of course also possible to can be realized the other structures inflated and can prevent gas leakage, herein not
It limits.Preferably, for the ease of being inflated by charge valve to air bag, the charge valve of gas ducting at least with the top of sleeve
To hold level with both hands together, i.e., the charge valve of gas ducting can be just concordant with the top of sleeve, alternatively, as depicted in figs. 1 and 2, gas tube
Road 5 can also stretch out sleeve 1, it is not limited here.
In the specific implementation, in above-mentioned dry electrode provided in an embodiment of the present invention, as depicted in figs. 1 and 2, firm banking
8, it may include: upper bed-plate 11 and lower bottom base 12；Wherein, as shown in Fig. 2, the inner surface of upper bed-plate 11 is provided with internal screw thread, under
Pedestal 12 is bolt arrangement, and the outer surface of bolt arrangement is provided with external screw thread, and internal screw thread and external screw thread cooperate for by lower bottom base
12 are threaded in or out upper bed-plate 11；Annular clamping plate 13 is provided in upper bed-plate 11, for the both wings of sleeve 1 to be stuck in upper bed-plate 11
Annular clamping plate 13 is backwards to the side of lower bottom base 12；Upper bed-plate 11 and lower bottom base 12 are hollow structure, as shown in Figure 1, integral structure
Through the hollow position of upper bed-plate 11 and lower bottom base 12；In this way, integral structure can be consolidated by upper bed-plate 11 and lower bottom base 12
Due on electrode cap；Conducting wire reed 9 is located in upper bed-plate 11, and the second conducting wire 10 is drawn from upper bed-plate 11, specifically, can will lead
Coil spring piece 9 and the second conducting wire 10 being electrically connected with conducting wire reed 9 are arranged in the annular clamping plate 13 of upper bed-plate 11 backwards to lower bottom base 12
In the space of side, in this way, convenient for conducting wire reed 9 and being stuck in annular clamping plate 13 on the sleeve both wings of 12 side of lower bottom base
Probe reed 2 be electrically connected, so as to so that probe 6 detect EEG signals pass sequentially through the first conducting wire 7, probe reed 2,
Conducting wire reed 9, the second conducting wire 10 are transferred to signal processing circuit, and then realize the detection of EEG signals.
In the specific implementation, in above-mentioned dry electrode provided in an embodiment of the present invention, firm banking is not limited to such as Fig. 1
It sleeve 1 and upper bed-plate 11 is connected by card slot, is connected through a screw thread upper bed-plate 11 and a kind of this knot of lower bottom base 12 with shown in Fig. 2
Structure can also be the other structures that can be fixed on integral structure on electrode cap, it is not limited here.
In the specific implementation, in above-mentioned dry electrode provided in an embodiment of the present invention, as shown in Fig. 2, probe reed 2 can be with
Positioned at the top of 1 one wing of sleeve (A as shown in Figure 2), i.e. probe reed 2 can be located at 1 one wing of sleeve (A as shown in Figure 2)
Backwards to the side of probe base 3, it is electrically connected, can will leads for the ease of the conducting wire reed 9 in probe reed 2 and upper bed-plate 11
The interior upper surface of upper bed-plate 11 is arranged in coil spring piece 9, in this way, after integral structure is put into upper bed-plate 11, it can by turnbarrel 1
So that probe reed 2 and conducting wire reed 9 contact with each other to realize electric connection；Alternatively, as shown in Figure 4 (for the ease of identifying,
Fig. 4 is the structure after splitting), probe reed 2 can also be located at the lower section of 1 one wing of sleeve (A as shown in Figure 4), i.e. probe spring
Piece 2 can be located at the side of 1 one wing of sleeve (A as shown in Figure 4) towards probe base 3, for the ease of probe reed 2 and upper bottom
Conducting wire reed 9 in seat 11 is electrically connected, and conducting wire reed 9 can be arranged in the annular clamping plate 13 of upper bed-plate 11 backwards to lower bottom base 12
Side, in this way, probe reed 2 and conducting wire reed 9 can be made by turnbarrel 1 after integral structure is put into upper bed-plate 11
It contacts with each other to realize electric connection；It is not limited here.
In the specific implementation, in above-mentioned dry electrode provided in an embodiment of the present invention, as shown in figure 4, probe reed 2 and set
1 mutually insulated of cylinder, is located at the side of 1 one wing of sleeve (A as shown in Figure 4) towards probe base 3；Conducting wire reed 9 is semi-circular,
Positioned at annular clamping plate 13 backwards to the side of lower bottom base 12 and with 11 mutually insulated of upper bed-plate；It is provided in an embodiment of the present invention above-mentioned dry
Electrode, as shown in figure 4, can also include: positioned at another wing of sleeve 1 (B as shown in Figure 4) towards 3 side of probe base and with
The first ground reed 14 that sleeve 1 is electrically connected, positioned at the annular clamping plate 13 of upper bed-plate 11 backwards to the semiorbicular of 12 side of lower bottom base
Second ground reed 15 and the first ground wire being electrically connected respectively with upper bed-plate 11 and the second ground reed 15 from the extraction of upper bed-plate 11
16；Wherein, the second ground reed 15 and 9 mutually insulated of conducting wire reed, the second ground reed 15 two ends adjacent with conducting wire reed 9
The distance between less than the first width of the reed 14 along the circumferencial direction of annular clamping plate 13；First ground wire 16 and signal processing electricity
The reference ground on road is electrically connected；After integral structure is fixed on electrode cap by upper bed-plate 11 and the cooperation of lower bottom base 12, pass through rotation
Rotaring sleeve 1 rotates integral structure to probe reed 2 and the electric connection of conducting wire reed 9 and the first ground reed 14 and the second ground reed
15 are electrically connected, and realize normal mode of operation；Divide alternatively, making integral structure rotate to the first reed 14 by turnbarrel 1
Reed 15 and conducting wire reed 9 are not electrically connected with the second, realize drift calibration mode.
Specifically, integral structure is fixed on electrode cap by dry electrode shown in Fig. 4, upper bed-plate 11 and the cooperation of lower bottom base 12
Later, rotate integral structure to probe reed 2 and the electric connection of conducting wire reed 9 and the first ground reed 14 by turnbarrel 1
Reed 15 is electrically connected with the second, and the EEG signals that probe 6 detects pass sequentially through the first conducting wire 7, probe reed 2, conducting wire spring
Piece 9, the second conducting wire 10 are transferred to signal processing circuit, realize the detection of EEG signals, realize normal mode of operation, meanwhile, set
Cylinder 1 passes sequentially through the first ground reed 14, the second ground reed 15 and the first ground wire 16 and is electrically connected, and upper bed-plate 11 is also with the first
Line 16 is electrically connected, and sleeve 1 may be implemented and upper bed-plate 11 is grounded, so as to so that the monolithic case of dry electrode is grounded, shape
At the electromagnetic shielding cage of relative closure, can the interference of electromagnetic field effectively in shielding space, further, since sleeve 1 and probe spring
2 mutually insulated of piece, upper bed-plate 11 and 9 mutually insulated of conducting wire reed, therefore, sleeve 1 will not influence to visit with the ground connection of upper bed-plate 11
The detection of needle 6, probe reed 2 and conducting wire reed 9 to EEG signals；Also, due to semiorbicular second ground reed 15 and half
The distance between two adjacent ends of the conducting wire reed 9 of the annular circumferencial direction of reed 14 along annular clamping plate 13 less than the first
Width, therefore, upper bed-plate 11 and lower bottom base 12 cooperation integral structure is fixed on electrode cap after, pass through turnbarrel 1
Integral structure can be made to rotate to the first reed 14 to ride on the second ground reed 15 and conducting wire reed 9, make the first ground reed 14
Reed 15 and conducting wire reed 9 are electrically connected with the second respectively, i.e. the first ground reed 14 reed 15 and conducting wire reed 9 by the second
It is electrically connected, so that conducting wire reed 9 passes sequentially through the first ground reed 14, the second ground reed 15, the first ground wire 16 and is grounded, from
And the amplifying circuit in signal processing circuit can pass sequentially through the second conducting wire 10, conducting wire reed 9, the first ground reed 14, second
Ground reed 15, the first ground wire 16 are grounded, in this way, can carry out drift calibration to amplifying circuit, realize drift calibration mode,
And existing EEG signals detection device be typically necessary return factory carry out drift calibration, therefore, it is provided in an embodiment of the present invention on
Dry application of electrode is stated when EEG signals detection device, drift self-calibration function may be implemented, can substantially reduce the time at
This consuming.To sum up, above-mentioned dry application of electrode provided in an embodiment of the present invention is in EEG signals detection device, by integral structure
After being put into upper bed-plate 11, the switching between normal mode of operation and drift calibration mode can be realized by turnbarrel 1, operate
Simply.
Preferably, in above-mentioned dry electrode provided in an embodiment of the present invention, as Figure 1-Figure 4, each probe 6 can be with
Include: the probe rod 17 being fixed on probe base 3, be fixed on probe rod 17 backwards to 3 side of probe base spring 18 and
It is fixed on probe 19 of the spring 18 backwards to 17 side of probe rod；I.e. spring 18 be set to probe rod 17 and probe 19 connection position
It sets, so that probe 6 has elasticity, in this way, it is right can to reduce probe 6 to the greatest extent when the scalp of probe 6 and user comes into full contact with
Sense of discomfort caused by user can in above-mentioned dry application of electrode provided in an embodiment of the present invention when EEG signals detection device
To improve the user experience of EEG signals detection device.Certainly, there is probe elasticity to be not limited to above structure, can also be
It can be realized flexible other structures, it is not limited here.
Preferably, the material of probe can be gilding in above-mentioned dry electrode provided in an embodiment of the present invention, this
Sample can reduce the contact resistance of probe and the scalp of user.
Based on the same inventive concept, the embodiment of the invention also provides a kind of wearable brain electric detection means, such as Fig. 5 institute
Show, comprising: signal processing circuit 101, electrode cap 102 and the multiple dry electrodes 103 being fixed on electrode cap 102；Wherein, respectively
Dry electrode 103 is above-mentioned dry electrode provided in an embodiment of the present invention；Electrode cap 102 and the corresponding position of each dry electrode 103 are opened
Equipped with the hole for placing electrode, directly contacted in this way, the probe in dry electrode 103 can pass through the hole with the scalp of user
To detect EEG signals.
Above-mentioned EEG checking device provided in an embodiment of the present invention, probe reed on dry one wing of electrode middle sleeve pass through the
One conducting wire is connected with probe, and probe reed is connected by the conducting wire reed in firm banking with the second conducting wire, in this way, in probe and
When the EEG signals of the scalp contact detection user of user, EEG signals can successively pass through probe, the first conducting wire, probe
Reed, conducting wire reed and the second wire transmission realize the detection to EEG signals to signal processing circuit.In sleeve and probe bottom
Inflatable bladders are accompanied between seat, sleeve, air bag, gas ducting, probe base and each probe are structure as a whole, and pass through inflation
Valve is inflated or is vented to air bag, can continuously adjust the height of air bag, so as to continuously adjust the depth of probe.For
Same user can shorten air bag by reducing inside air bag gas when dry electrode is in the position of skull protrusion
Highly so as to shorten the effective length of dry electrode；It, can be by being filled into air bag when dry electrode is in the position of skull recess
Enter gas and carry out the effective length that the height of augmented airbag increases dry electrode with this, thereby may be ensured that dry electrode and the head of user
Skin comes into full contact with, and then can reduce input impedance, improves the quality of collected EEG signals.For different users,
The height of air bag can be changed by being inflated or being vented to air bag to change the effective length of dry electrode, can make to visit
The skull of needle fitting different shape and size.
When preferably, in above-mentioned EEG checking device provided in an embodiment of the present invention, as shown in figure 5, can also include:
Collect line interface 104；Collection line interface 104 is for pooling together the second conducting wire of each dry electrode 103, and the signal wire after collecting is such as
Shown in shown in fig. 5 105, in this way, it is possible to reduce the wiring of EEG checking device, so as to simplify the knot of EEG checking device
Structure.
Further, in above-mentioned EEG checking device provided in an embodiment of the present invention, as shown in figure 5, each dry electrode 103
The first ground wire can also by collect line interface 104 be integrated into second ground wire 106, in this way, can be further reduced brain
The wiring of electric detection means, so as to further simplify the structure of EEG checking device.
Preferably, in above-mentioned EEG checking device provided in an embodiment of the present invention, as shown in figure 5, can also include: item
Circle 107；Power supply 108 is provided in necklace 107；Signal processing circuit 101 is integrated in necklace 107, and signal processing circuit 101 can
To be transferred to external computer by will test data in a manner of being wirelessly transferred such as bluetooth；In this way, can shorten at signal
The distance between circuit 101 and electrode cap 102 are managed, the signal wire 105 and the second ground wire 106 drawn from collection line interface 104 are shortened
Length, reduce EEG checking device suffered by electromagnetic interference；Also, the power supply 108 being arranged in necklace 107 can also make brain electric-examination
It surveys device and realizes the function of carrying power supply to extend stand-by time.
The above-mentioned dry electrode and wearable brain electric detection means that depth is adjusted using air bag provided in an embodiment of the present invention, set
Probe reed on one wing of cylinder is connected by the first conducting wire with probe, and probe reed passes through conducting wire reed in firm banking and the
Two conducting wires are connected, in this way, when probe contact with the scalp of user the EEG signals for detecting user, EEG signals can be according to
Secondary probe, the first conducting wire, probe reed, conducting wire reed and the second wire transmission of passing through is realized to signal processing circuit to brain electricity
The detection of signal.Accompany inflatable bladders between sleeve and probe base, sleeve, air bag, gas ducting, probe base and
Each probe is structure as a whole, and air bag is inflated or is vented by charge valve, can continuously adjust the height of air bag, so as to
To continuously adjust the depth of probe.Reduction can be passed through when dry electrode is in the position of skull protrusion for same user
Inside air bag gas shortens the height of air bag so as to shorten the effective length of dry electrode；When dry electrode is in the position of skull recess
When setting, the effective length of dry electrode can be increased with this by being filled with gas into air bag come the height of augmented airbag, so as to
It to guarantee that the scalp of dry electrode and user comes into full contact with, and then can reduce input impedance, improve collected brain telecommunications
Number quality.For different users, the height of air bag can be changed by being inflated or being vented to air bag to change
The effective length of dry electrode can make the skull of probe fitting different shape and size.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of dry electrode for adjusting depth using air bag characterized by comprising
The hollow sleeve with both wings, the probe reed on one wing of sleeve, probe base are fixed on the probe bottom
Inflatable bladders between seat and the sleeve with air bag perforation connection, through the sleeve hollow position and included fill
The gas ducting of air valve, is fixed on the probe base backwards to multiple probes of the one side of the air bag, and flexible first
Conducting wire, hollow firm banking, the conducting wire reed in the firm banking, and from the firm banking draw second
Conducting wire；Wherein,
The sleeve, the air bag, the gas ducting, the probe base and each probe are fixedly connected and are integrally formed
Structure；
First conducting wire, for each probe to be electrically connected with the probe reed respectively；
The firm banking, for the integral structure to be fixed on electrode cap；The integral structure runs through the fixed bottom
The hollow position of seat；
The conducting wire reed, for being fixed on the electrode cap in the integral structure and the integral structure is rotated to described
When the position that probe reed and the conducting wire reed contact with each other, it is electrically connected with the probe reed；
Second conducting wire, for the conducting wire reed and signal processing circuit to be electrically connected；
After the integral structure is fixed on the electrode cap by the firm banking, make described one by rotating the sleeve
Body structure, which is rotated to the probe reed and the conducting wire reed, to be electrically connected, and realizes normal mode of operation.
2. dry electrode as described in claim 1, which is characterized in that the firm banking, comprising: upper bed-plate and lower bottom base；Its
In,
The inner surface of the upper bed-plate is provided with internal screw thread, and the lower bottom base is bolt arrangement, the outer surface of the bolt arrangement
It is provided with external screw thread, the internal screw thread and the external screw thread cooperate for the lower bottom base to be threaded in or out the upper bed-plate；
Annular clamping plate is provided in the upper bed-plate, for by the both wings of the sleeve be stuck in the upper bed-plate marmon clamp backboard to
The side of the lower bottom base；
The upper bed-plate and the lower bottom base are hollow structure, and the integral structure is through the upper bed-plate and the lower bottom base
Hollow position；
The conducting wire reed is located in the upper bed-plate, and second conducting wire is drawn from the upper bed-plate.
3. dry electrode as claimed in claim 2, which is characterized in that the probe reed and the sleeve mutually insulated are located at
One aerofoil of sleeve is to the side of the probe base；The conducting wire reed be semi-circular, be located at the marmon clamp backboard to
The side of the lower bottom base and with the upper bed-plate mutually insulated；
Further include: the first ground positioned at another aerofoil of the sleeve to the probe base side and with sleeve electric connection
Reed, positioned at the upper bed-plate marmon clamp backboard to the semiorbicular second ground reed of the lower bottom base side and from described
Pedestal draws the first ground wire being electrically connected respectively with the upper bed-plate and second ground reed；Wherein,
Second ground reed and the conducting wire reed mutually insulated, second ground reed it is adjacent with the conducting wire reed two
The distance between a end is less than first ground reed along the width of the circumferencial direction of the annular clamping plate；
The reference ground of first ground wire and the signal processing circuit is electrically connected；
After the integral structure is fixed on the electrode cap by the upper bed-plate and lower bottom base cooperation, by rotating institute
Stating sleeve rotates the integral structure to the probe reed and conducting wire reed electric connection and first ground reed
It is electrically connected with second ground reed, realizes normal mode of operation；Alternatively, making the integral structure by rotating the sleeve
Rotation is electrically connected with second ground reed and the conducting wire reed respectively to first ground reed, realizes drift calibrating die
Formula.
4. dry electrode as described in claim 1, which is characterized in that each probe, comprising: be fixed on the probe base
On probe rod, be fixed on the probe rod backwards to the spring of the probe base side and be fixed on the spring backwards to institute
State the probe of probe rod side.
5. dry electrode according to any one of claims 1-4, which is characterized in that the material of the probe is gilding.
6. a kind of wearable brain electric detection means characterized by comprising signal processing circuit, electrode cap and be fixed on institute
State multiple dry electrodes on electrode cap；Wherein,
Each dry electrode is dry electrode as described in any one in claim 1-5；
The corresponding position of the electrode cap and each dry electrode offers the hole for placing electrode.
7. EEG checking device as claimed in claim 6, which is characterized in that further include: collection line interface；
The collection line interface is for pooling together the second conducting wire of each dry electrode.
8. EEG checking device as claimed in claim 7, which is characterized in that the first ground wire of each dry electrode passes through described
Line concentration Interface integration is second ground wire.
9. such as the described in any item EEG checking devices of claim 6-8, which is characterized in that further include: necklace；
Power supply is provided in the necklace；
The signal processing circuit is integrated in the necklace.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910284509.6A CN109893129B (en) | 2019-04-10 | 2019-04-10 | Dry electrode for adjusting depth by utilizing air bag and wearable electroencephalogram detection device |
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| CN201910284509.6A CN109893129B (en) | 2019-04-10 | 2019-04-10 | Dry electrode for adjusting depth by utilizing air bag and wearable electroencephalogram detection device |
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| CN110680311A (en) * | 2019-08-30 | 2020-01-14 | 北京航空航天大学 | Dry electrode brain electricity collection system |
| CN111436930A (en) * | 2020-03-05 | 2020-07-24 | 开封市学国生物科技有限公司 | Noise-proof multi-point contact elastic electrode cap |
| CN112401881A (en) * | 2020-10-27 | 2021-02-26 | 北京航空航天大学 | Wearable fNIRS brain imaging system |
| CN113261979A (en) * | 2021-07-19 | 2021-08-17 | 季华实验室 | Tinnitus identification system based on electroencephalogram signals |
| CN113274027A (en) * | 2021-06-17 | 2021-08-20 | 复旦大学 | In-vivo multichannel electroencephalogram signal recording device |
| CN113456080A (en) * | 2021-05-25 | 2021-10-01 | 北京机械设备研究所 | Dry-wet universal sensing electrode and application method thereof |
| CN115153564A (en) * | 2022-08-01 | 2022-10-11 | 天津大学 | Non-invasive ultrahigh-density electroencephalogram acquisition electrode |
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| CN113456080A (en) * | 2021-05-25 | 2021-10-01 | 北京机械设备研究所 | Dry-wet universal sensing electrode and application method thereof |
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| CN115153564A (en) * | 2022-08-01 | 2022-10-11 | 天津大学 | Non-invasive ultrahigh-density electroencephalogram acquisition electrode |
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