CN107951486A - A kind of dry electrode eeg signal acquisition device of wear-type - Google Patents
A kind of dry electrode eeg signal acquisition device of wear-type Download PDFInfo
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- CN107951486A CN107951486A CN201711259456.XA CN201711259456A CN107951486A CN 107951486 A CN107951486 A CN 107951486A CN 201711259456 A CN201711259456 A CN 201711259456A CN 107951486 A CN107951486 A CN 107951486A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/369—Electroencephalography [EEG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
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- Signal Processing (AREA)
- Psychology (AREA)
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- Computer Vision & Pattern Recognition (AREA)
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention discloses a kind of dry electrode eeg signal acquisition device of wear-type, it includes the stent of arc, the both ends of the stent are connected by band, the middle of the stent is formed with upwardly-extending baffle, the baffle is tilted to the inner side of stent, and the madial wall of the baffle is arc-shaped, the stent is equipped with multiple arcs strut, the arcuate struts are divided into the both sides of baffle, and the arcuate struts are tilted to the inner side of stent, the end of the arcuate struts and the madial wall of baffle are respectively fixed with collection head, the lower face of the collection head is equipped with EEG electrodes, by the stent, the mating reaction of band and baffle and the eeg signal acquisition device is worn on human body head, the EEG electrode securements on the collection head are made in human body brain by the arc shaped inside wall of the arcuate struts and baffle.The present invention is convenient and efficient when in use, safety is noninvasive, it is high to be easy to wearing, reliable and stable and acquisition precision.
Description
Technical field
The present invention relates to eeg signal acquisition processing technology field, more particularly to a kind of dry electrode EEG signals of wear-type to adopt
Acquisition means.
Background technology
Brain wave derives from the postsynaptic potential of cones top dendron, and for brain in activity, a large amount of neurons are synchronous
Substantial amounts of physiology and disease information are contained in the EEG signals that the postsynaptic potential of generation is formed after summation, is cured in clinic
In terms of, EEG Processing can not only provide diagnosis basis for some cerebral diseases, but also provided for some cerebral diseases
Treatment means brain waves (EEG) detection of effect is in fact and much like in hospital common electrocardiogram (ECG) principle, is all to utilize
To detect the change of voltage, still voltage change caused by brain wave is small (microvolt level) to electrode, and signal-to-noise ratio is ultralow, is highly prone to
Head movement in gatherer processes is disturbed, is disturbed caused by facial muscle movements, the noise in power supply noise and transmitting procedure is done
Disturb the collection for directly influencing signal.Therefore the acquisition mode of signal is extremely important.The neuron activity of brain is passed by ion
To cerebral cortex is reached, fixed overhead conductive electrode collects faint voltage change, by differential amplification, filters, number
A series of small signal process means such as mould conversion are used EEG signals characteristic value is extracted so as to describe the initial data of brain electricity
Analysis.Diverse location represents different regions, collects different signals (for example α ripples, β ripples, θ ripples, δ ripples ....
EEG signals are a kind of real-time signal reactions of human nerve cognitive process, since EEG signals can pass through nothing
Wound mode obtains, and does not form injury to people, therefore EEG signals are the most common letters for studying human brain various functions activity
Number EEG signals are the summation generations by multiple neuron activities.Therefore the dynamic monitoring to its amplitude and time shaft provides
The potential nervous activity related with this activity and the information of medical conditions.EEG commonly used to determine whether epileptic attack or
The reason for positioning intracerebral breaking-out, monitoring brain electricity can be used for monitoring sleep state or depth of anesthesia, and neural bioscience
Using it as non-invasive research tool.The collecting device of mainstream is broadly divided into three major types currently on the market：1. medical is special
Industry electroence phalograph, it be mainly used for disease diagnosis and scientific research using 10-20 system acquisitions electrode and double lead knots
Structure, 2. portable brain electric wave collecting devices are this portable using 1-3 acquisition electrode and average lead or unipolar lead structure
Formula collecting device.3. the current implanteds of implanted electrode array compare the thing in forward position at last, because directly being caught in embedment scalp
The electric signal of neuron is obtained, has exempted from most interference, it is all with the obvious advantage in accuracy.But need signal processing, wirelessly
Data transfer, wireless charging integrates and implant head is subcutaneous, belongs to invasive implantation.
It can be seen from the above that the defects of prior art, is, and first, the 10-20 system testing sides that traditional R＆D units use
Formula.Viscous conducting resinl is glued using pouring on each electrode, is chemically reacted between conducting resinl intermediate ion and electrode, is formed former
Battery so that contact resistance is very low, and interference is small, and the data collected are also relatively more accurate, but since this system uses wet electrode
Mode cause to wear it is inconvenient.Secondly, implantation is that the mode of electrod-array belongs to a kind of signal acquisition mode for comparing forward position,
But this is owned by France in invasive implantation, there are the infection risk of invasive procedures introducing and market recognizes and receives the problem of low, on short terms
It is difficult to realize commercialization.
The content of the invention
The technical problem to be solved in the present invention is, in view of the deficiencies of the prior art, there is provided one kind is convenient and efficient when using,
Safety is noninvasive, is easy to wearing, the dry electrode eeg signal acquisition device of wear-type reliable and stable, that acquisition precision is high.
In order to solve the above technical problems, the present invention adopts the following technical scheme that.
A kind of dry electrode eeg signal acquisition device of wear-type, it includes the stent of arc, and the both ends of the stent lead to
Band connection is crossed, the middle of the stent is tilted formed with upwardly-extending baffle, the baffle to the inner side of stent, and should
The madial wall of baffle is arc-shaped, and the stent is equipped with multiple arcs strut, and the arcuate struts are divided into the both sides of baffle, and
The arcuate struts are tilted to the inner side of stent, and the end of the arcuate struts and the madial wall of baffle are respectively fixed with collection
Head, the lower face of the collection head is equipped with EEG electrodes, by the mating reaction of the stent, band and baffle by the brain
Electrical signal collection device is worn on human body head, and the collection head is made by the arc shaped inside wall of the arcuate struts and baffle
On EEG electrode securements in human body brain.
Preferably, the middle of the stent is formed with the protrusion extended downwardly.
Preferably, the lower end of the protrusion is equipped with switch, indicator light and memory card slot.
Preferably, the stent is equipped with 6 arcuate struts.
Preferably, the EEG electrodes are in the cellular lower face for being laid in the collection head.
Preferably, the stent is the stent of light-alloy material, and the arcuate struts are the strut of light-alloy material.
In the dry electrode eeg signal acquisition device of wear-type disclosed by the invention, stent, band and baffle composition are utilized
The wearable arcuate struts on human body brain, stent of structure extend to the position for needing to gather signal of brain, in baffle and
Under the action of arcuate struts, make multiple collection heads be distributed in the relevant position of brain, and cause EEG electrode securements in human body brain
Portion, and then realize the collection of eeg signal.The device uses wearable structure, compared with prior art middle dependence conducting resinl
Or for the mode of invasive implantation, the device is convenient and efficient when in use, safety is noninvasive, while under the action of band, make
Obtaining the device can be adjusted according to head size, and the device has stabilization can using EEG electrodes as sensing device in addition
Lean on, the features such as acquisition precision is high.Based on above-mentioned characteristic so that the eeg signal acquisition device is suitably applied brain wave acquisition processing
In system, and there is preferable application prospect.
Brief description of the drawings
Fig. 1 is the stereogram of eeg signal acquisition device of the present invention.
Fig. 2 is the side view of eeg signal acquisition device of the present invention.
Fig. 3 is the bottom view of eeg signal acquisition device of the present invention.
Fig. 4 is the lower face structure chart of collection head.
Fig. 5 is the composition frame chart of acquisition system in the preferred embodiment of the present invention.
Embodiment
The present invention is described in more detail with reference to the accompanying drawings and examples.
The invention discloses a kind of dry electrode eeg signal acquisition device of wear-type, with reference to shown in Fig. 1 to Fig. 4, it includes
There is the stent 1 of arc, the both ends of the stent 1 are connected by band 2, and the middle of the stent 1 is formed with upwardly extending
Baffle 3, the baffle 3 is tilted to the inner side of stent 1, and the madial wall of the baffle 3 is arc-shaped, and the stent 1 is equipped with multiple
Arcuate struts 4, the arcuate struts 4 are divided into the both sides of baffle 3, and the arcuate struts 4 are tilted to the inner side of stent 1, institute
State the end of arcuate struts 4 and the madial wall of baffle 3 is respectively fixed with collection head 5, the lower face of the collection head 5 is equipped with EEG
Electrode 6, human body is worn on by the mating reaction of the stent 1, band 2 and baffle 3 by the eeg signal acquisition device
Head, makes the EEG electrodes 6 on the collection head 5 be closely attached on people by the arc shaped inside wall of the arcuate struts 4 and baffle 3
Body brain.
In above-mentioned eeg signal acquisition device, the structure formed using stent 1, band 2 and baffle 3 is wearable in human body brain
Portion, the arcuate struts 4 on stent 1 extend to the position for needing to gather signal of brain, in the effect of baffle 3 and arcuate struts 4
Under, make multiple collection heads 5 be distributed in the relevant position of brain, and cause EEG electrodes 6 to be closely attached on human body brain, and then realize
The collection of eeg signal.The device uses wearable structure, compared with prior art middle dependence conducting resinl or invasive implantation
Mode for, the device is convenient and efficient when in use, safety is noninvasive, while under the action of band 2 so that the device energy root
Be adjusted according to head size, the device is used as sensing device using EEG electrodes 6 in addition, have it is reliable and stable, acquisition precision is high
The features such as.Based on above-mentioned characteristic so that the eeg signal acquisition device is suitably applied in brain wave acquisition processing system, and is had
Preferable application prospect.
As a kind of preferred embodiment, the middle of the stent 1 is formed with the protrusion 7 extended downwardly.The protrusion 7
One effect is to be connected at forehead so that the device is more stablized after the wearing, its another effect is can be in inside
Wiring board, electronic device etc. are placed, in the present embodiment, the lower end of the protrusion 7 is equipped with switch 8, indicator light 9 and memory card slot
10。
As a kind of preferred embodiment, the stent 1 is equipped with 6 arcuate struts 4.The present embodiment is in the both sides of baffle 3 point
Not She Zhi 3 arcuate struts 4, and then signal acquisition is carried out to left brain and right brain, which is arranged to arcuate structure, can
Enable the end face of collection head 5 to be maintained at the state abutted against with head, and then improve the stability of signal acquisition process.
In the present embodiment, the EEG electrodes 6 are in the cellular lower face for being laid in the collection head 5.Further, institute
The stent that stent 1 is light-alloy material is stated, the arcuate struts 4 are the strut of light-alloy material.Wherein, light-alloy refers to be based on
The alloy of the metal materials such as aluminium, titanium, magnesium.
Eeg signal acquisition device in the present embodiment, it is reliable and stable to gather the process of EEG signal, employs wearing letter
Single, comfortable wear-type structure, and electrode replaceable is replaced.Wherein, EEG electrodes use dry electrode approach, solve wet electrode
The problem of wearing inconvenience and being difficult to cleaning after, electrode section employs the beehive type electrode way of contact, eliminates plane
The problems such as electrode and the scalp loose contact at hair position.Meanwhile realized by high alloy material of toughness etc. to electrode
Stablize support, ensure that scalp layer collection EEG signals can be steadily contacted in electrode, while reduce electrode gravity on head
Pressure, reduces the noise signal that electrode contact introduces.In addition, gather left and right brain telecommunications respectively in a manner of the distribution electrode of left and right
Number, only need to wear wear-type signal pickup assembly can be accurately positioned brain wave acquisition position, and provided for background analysis has in real time
The EEG signals of effect.
As a kind of applicating example of the present invention, present invention can apply in an acquisition system, refer to Fig. 5, the system
Include：
Eeg signal acquisition device 100, for sensing human body electroencephalogram's ripple and exporting electric signal；
AFE(analog front end) 101, is electrically connected at eeg signal acquisition device 100, and the AFE(analog front end) 101 is used to receive brain electricity
The electric signal that signal pickup assembly 100 exports；
Central processing unit 102, is electrically connected at AFE(analog front end) 101, before the central processing unit 102 is used for simulation
The electric signal of the access of end 101 exports result data after being handled；
Bluetooth module 103, is electrically connected at central processing unit 102, and the bluetooth module 103 is used for central processing list
The result data of the output of member 102 is wirelessly sent；
Host computer 104, in bluetooth module 103, the host computer 104 is used to receiving and showing bluetooth module wireless connection
103 result datas sent.
In said system, eeg signal acquisition device 100 senses human body electroencephalogram's ripple and exports electric signal to AFE(analog front end)
101, the AFE(analog front end) 101 receives the electric signal of the output of eeg signal acquisition device 100 and is transmitted to central processing unit
102, the electric signal that the central processing unit 102 accesses AFE(analog front end) 101 exports result data to bluetooth after handling
Module 103, the result data that the bluetooth module 103 exports central processing unit 102 are wirelessly uploaded to upper
Machine 104, the host computer 104 receive and show result data.Based on the system so that the present invention realizes brain wave acquisition equipment
Miniaturization, and the easy of acquisition mode, while improve antijamming capability, stability and the reliability of acquisition system,
It is adapted to promote and apply in eeg signal acquisition technical field, and there is preferable application prospect.
Said system includes the power module 105 for power supply.
In order to realize that data store, the present embodiment has further included data storage cell 106, the data storage cell 106
Central processing unit 102 is electrically connected at, the data storage cell 106 is used for the knot for storing the output of central processing unit 102
Fruit data.Further, the data storage cell 106 includes TF card.
In order to improve data processing precision, the central processing unit 102 is built-in with data filtering module, the data filter
Ripple module is used to filter out the interference data in the output electric signal of eeg signal acquisition device 100.On receiving terminal, the host computer
104 be computer or mobile phone.
As a kind of preferred embodiment, the central processing unit 102 includes STM32 processors.The central processing unit
STM32 sends order configuration AFE(analog front end) by SPI universal serial bus.Set PGA amplifiers be 24 times, channel number be 8 passages,
Sample rate is 250Hz, lead departs from prompting.Sent after configuration successful and start measurement.When the data ready that AFE(analog front end) collects
By GPIO mouthfuls of form CPU, CPU can be notified to be filtered processing again after obtaining EEG signals by SPI afterwards and pass through bluetooth
Eeg data is uploaded to PC machine, while data storage is backed up in TF card easy to later data.
Said system is when measuring the brain wave of human body, by the way of integrated simulation front end, has abandoned foregoing use and has divided
From the complicated measurement process of device, in addition output transmission sampling Bluetooth transmission mode, not only causes measuring apparatus significantly
Miniaturization, portability, and make it that the data stabilization of collection is reliable.
The above is preferred embodiments of the present invention, is not intended to limit the invention, all technology models in the present invention
Interior done modification, equivalent substitution or improvement etc. are enclosed, should be included in the range of of the invention protect.
Claims (6)
1. a kind of dry electrode eeg signal acquisition device of wear-type, it is characterised in that include the stent (1) of arc, the branch
The both ends of frame (1) are connected by band (2), and the middle of the stent (1) is formed with upwardly-extending baffle (3), the gear
Plate (3) is tilted to the inner side of stent (1), and the madial wall of the baffle (3) is arc-shaped, and the stent (1) is equipped with multiple arcs
Strut (4), the arcuate struts (4) are divided into the both sides of baffle (3), and interior inclination of the arcuate struts (4) to stent (1)
Tiltedly, the end of the arcuate struts (4) and the madial wall of baffle (3) are respectively fixed with collection head (5), the collection head (5)
Lower face is equipped with EEG electrodes (6), by the stent (1), band (2) and baffle (3) mating reaction and by the brain telecommunications
Number harvester is worn on human body head, and the collection is made by the arc shaped inside wall of the arcuate struts (4) and baffle (3)
EEG electrodes (6) on head (5) are closely attached on human body brain.
2. the dry electrode eeg signal acquisition device of wear-type as claimed in claim 1, it is characterised in that the stent (1)
Middle is formed with the protrusion (7) extended downwardly.
3. the dry electrode eeg signal acquisition device of wear-type as claimed in claim 1, it is characterised in that the protrusion (7)
Lower end be equipped with switch (8), indicator light (9) and memory card slot (10).
4. the dry electrode eeg signal acquisition device of wear-type as claimed in claim 1, it is characterised in that on the stent (1)
Equipped with 6 arcuate struts (4).
5. the dry electrode eeg signal acquisition device of wear-type as claimed in claim 1, it is characterised in that the EEG electrodes (6)
In the cellular lower face for being laid in the collection head (5).
6. the dry electrode eeg signal acquisition device of wear-type as claimed in claim 1, it is characterised in that the stent (1) is
The stent of light-alloy material, the arcuate struts (4) are the strut of light-alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259456.XA CN107951486A (en) | 2017-12-04 | 2017-12-04 | A kind of dry electrode eeg signal acquisition device of wear-type |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711259456.XA CN107951486A (en) | 2017-12-04 | 2017-12-04 | A kind of dry electrode eeg signal acquisition device of wear-type |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009100A (en) * | 2018-07-26 | 2018-12-18 | 北京机械设备研究所 | A kind of headgear assembly with forehead EEG Signals collecting function |
| CN110801219A (en) * | 2019-11-18 | 2020-02-18 | 心韵恒安医疗科技（北京）有限公司 | Body surface bioelectric electrode holder, strip-shaped device and electrocardiogram measuring device |
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| CN209347030U (en) * | 2017-12-04 | 2019-09-06 | 深圳贝特莱电子科技股份有限公司 | A kind of dry electrode eeg signal acquisition device of wear-type |
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| CN102596021A (en) * | 2009-11-04 | 2012-07-18 | 皇家飞利浦电子股份有限公司 | Device for positioning electrodes on a user's scalp |
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| CN109009100A (en) * | 2018-07-26 | 2018-12-18 | 北京机械设备研究所 | A kind of headgear assembly with forehead EEG Signals collecting function |
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