CN214342364U - Wireless electroencephalogram signal acquisition system - Google Patents
Wireless electroencephalogram signal acquisition system Download PDFInfo
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- CN214342364U CN214342364U CN202023156854.9U CN202023156854U CN214342364U CN 214342364 U CN214342364 U CN 214342364U CN 202023156854 U CN202023156854 U CN 202023156854U CN 214342364 U CN214342364 U CN 214342364U
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Abstract
The utility model relates to a wireless brain electrical signal collection system. The wireless brain electrical signal acquisition system comprises: the electroencephalogram acquisition module, the electroencephalogram cap, the power supply module, the wireless transmission gateway and the upper computer software system; the electroencephalogram acquisition module and the power supply module are arranged on the electroencephalogram cap; the power supply module is connected with the electroencephalogram acquisition module; the brain electricity collection module includes: the electroencephalogram electrode, the analog front-end module and the wireless transmission module; the electroencephalogram electrode is connected with the analog front-end module; the electroencephalogram electrode is used for collecting electroencephalogram signals; the analog front-end module is connected with the wireless transmission module; the analog front-end module is used for filtering, operational amplification and analog-to-digital conversion of the electroencephalogram signal; the wireless transmission module is connected with the wireless transmission gateway; the wireless transmission module is used for transmitting the processed electroencephalogram signals to an upper computer software system through a wireless transmission gateway. The utility model discloses reduce the interference noise, improved the EEG signal quality of collection.
Description
Technical Field
The utility model relates to an information acquisition technical field especially relates to a wireless brain electrical signal collection system.
Background
The brain electrical signals can reflect the thinking activity of cerebral cortex, and have wide application prospect in the fields of medical rehabilitation, education, military, game and entertainment and the like. The acquisition of the electroencephalogram signals is mainly divided into an invasive mode and a non-invasive mode, and although the invasive mode can acquire signals with higher quality, craniotomy is required, the risk is high, and the method cannot be accepted by general people; the non-invasive electroencephalogram acquisition mode can realize the acquisition of electroencephalogram signals only through the scalp electrode, and has the advantages of safety and convenience; however, because the electroencephalogram signals have the characteristics of weak signals, easy interference and the like, the problems of poor signal quality and high interference noise of the non-invasive acquisition of the electroencephalogram signals always face, and the application and popularization of the non-invasive acquisition of the electroencephalogram signals are hindered. In order to solve the problem, reduce interference noise and improve signal quality, a portable wireless electroencephalogram acquisition system is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable, do not have wound, wireless EEG signal collection system, reduce the interference noise to improve the EEG signal quality of gathering.
In order to achieve the above object, the utility model provides a following scheme:
a wireless electroencephalogram signal acquisition system, comprising: the electroencephalogram acquisition module, the electroencephalogram cap, the power supply module, the wireless transmission gateway and the upper computer software system;
the electroencephalogram acquisition module and the power supply module are arranged on the electroencephalogram cap; the power supply module is connected with the electroencephalogram acquisition module;
the brain electricity collection module includes: the electroencephalogram electrode, the analog front-end module and the wireless transmission module;
the electroencephalogram electrode is connected with the analog front-end module; the electroencephalogram electrode is used for collecting electroencephalogram signals;
the analog front-end module is connected with the wireless transmission module; the analog front-end module is used for filtering, operational amplification and analog-to-digital conversion of the electroencephalogram signal to obtain a processed electroencephalogram signal;
the wireless transmission module is connected with the wireless transmission gateway; the wireless transmission module is used for transmitting the processed electroencephalogram signals to the wireless transmission gateway; and the wireless transmission gateway transmits the processed electroencephalogram signals to an upper computer software system.
Optionally, the analog front end module includes: the ESD protection circuit comprises an ESD protection circuit, a filter circuit, an operational amplifier circuit and an analog-to-digital conversion circuit;
the ESD protection circuit is respectively connected with the electroencephalogram electrode and the filter circuit, the filter circuit is connected with the operational amplification circuit, the operational amplification circuit is connected with the analog-to-digital conversion circuit, and the analog-to-digital conversion circuit is connected with the wireless transmission module.
Optionally, the ESD protection circuit is a TPD4E1B06 chip.
Optionally, the filter circuit is an RC low-pass filter.
Optionally, the wireless transmission mode of the wireless transmission module is bluetooth or WIFI.
Optionally, the electroencephalogram acquisition module further comprises: a substrate;
the substrate is arranged on the electroencephalogram cap;
the lower surface of the substrate is provided with an electroencephalogram electrode; and the analog front end module and the wireless transmission module are arranged on the upper surface of the substrate.
Optionally, the number of the electroencephalogram acquisition modules is multiple.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model provides a wireless brain electrical signal collection system, the utility model discloses a simulation front end module in the brain electrical signal collection module is used for with brain electrical signal carries out filtering, operational amplification and analog-to-digital conversion to integrate simulation front end module and brain electrical electrode together, avoided because of the interference that electrode and conditioning circuit distance received too far away, and then avoided the environmental disturbance between electrode and the acquisition circuit; the electroencephalogram acquisition module can work independently or cooperatively, and the processed electroencephalogram signals are directly transmitted to an upper computer in a wireless mode, so that inconvenience caused by wire transmission is avoided, and wearing portability of electroencephalogram acquisition is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a wireless electroencephalogram signal acquisition system provided by the utility model;
fig. 2 is the schematic diagram of the wireless electroencephalogram signal acquisition system provided by the utility model.
Description of the symbols: the electroencephalogram monitoring system comprises a 1-electroencephalogram cap, a 2-electroencephalogram acquisition module, a 3-electroencephalogram electrode, a 4-analog front end module, a 5-wireless transmission module, a 6-electroencephalogram acquisition module substrate, a 7-power supply module and an 8-wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a wireless EEG signal collection system reduces the interference noise to improve the EEG signal quality of collection.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is the utility model provides a wireless brain electrical signal collection system schematic structure, fig. 2 is the utility model provides a wireless brain electrical signal collection system principle sketch map, as shown in fig. 1 and fig. 2, the utility model provides a wireless brain electrical signal collection system, include: the electroencephalogram acquisition module 2, the electroencephalogram cap 1, the power module 7, the wireless transmission gateway and the upper computer software system.
As a specific example, the electroencephalogram cap 1 is made of elastic, breathable and sweat-absorbent materials, such as COOLMAX materials and the like.
The electroencephalogram acquisition module 2 and the power module 7 are arranged on the electroencephalogram cap 1. The power module is connected with the electroencephalogram acquisition module. The power module 7 comprises a power management and rechargeable battery and supplies power to the whole electroencephalogram acquisition module 2.
The electroencephalogram acquisition module 2 comprises: the electroencephalogram electrode 3, the analog front end module 4 and the wireless transmission module 5. The electroencephalogram electrode 3 can be a traditional wet electrode or a traditional dry electrode; when the electroencephalogram electrode 3 is a dry electrode, a silver chloride claw-shaped dry electrode can be adopted. One electroencephalogram acquisition module 2 can comprise one or more electroencephalogram electrodes 3.
The electroencephalogram electrode 3 is respectively connected with the analog front-end module 4 and the power supply module 7; the electroencephalogram electrode 3 is used for collecting electroencephalogram signals.
The analog front end module 4 is connected with the wireless transmission module 5; the analog front-end module 4 is used for filtering, operational amplification and analog-to-digital conversion of the electroencephalogram signal to obtain a processed electroencephalogram signal.
The wireless transmission module 5 is connected with the wireless transmission gateway; the wireless transmission module 5 is used for transmitting the processed electroencephalogram signals to a wireless transmission gateway; and the wireless transmission gateway transmits the processed electroencephalogram signals to an upper computer software system in a wireless mode.
The wireless transmission gateway is also used for issuing instructions to the electroencephalogram acquisition module 2.
As a specific embodiment, the electroencephalogram electrodes 3 are connected with the input of the analog front-end module 4 through wires 8 or PCB wiring.
As shown in figure 1, a plurality of electroencephalogram collection modules 2 are fixed on the head of a testee through an electroencephalogram cap 1, one side of each electroencephalogram collection module 2 is provided with an electroencephalogram electrode 3 through a substrate 6, the other side of each electroencephalogram collection module is provided with a simulation front-end module 4 and a wireless transmission module 5, the substrate 6 can be a flexible circuit board, the electroencephalogram electrodes 3 can be a plurality of, and can be connected with the simulation front-end module 4 through copper wires on a lead 8 or a circuit board. The power module 7 is connected with all the electroencephalogram acquisition modules 2 through the leads 8 to provide power for the electroencephalogram acquisition modules, so that the normal work of the system is ensured.
The analog front end module 4 includes: ESD protection circuit, filter circuit, operational amplifier circuit and analog-to-digital conversion circuit. The ESD protection circuit is used to protect the circuit from electrostatic damage.
The ESD protection circuit is respectively connected with the electroencephalogram electrode 3 and the filter circuit, the filter circuit is connected with the operational amplifier circuit, the operational amplifier circuit is connected with the analog-to-digital conversion circuit, and the analog-to-digital conversion circuit is connected with the wireless transmission module 5.
The ESD protection circuit is a TPD4E1B06 chip.
The filter circuit is an RC low-pass filter; the cut-off frequency is 100 Hz.
The wireless transmission mode of the wireless transmission module 5 is bluetooth.
The wireless transmission gateway has the function of converting Bluetooth to WIFI, performs data communication with the wireless transmission module 5 through Bluetooth, and uploads data to an upper computer software system through WIFI in a wireless mode.
The operational amplifier circuit and the analog-digital conversion circuit adopt ADS1299 high-performance electroencephalogram acquisition chips of TI company.
The electroencephalogram acquisition module 2 further comprises: a substrate 6.
The substrate 6 is arranged on the electroencephalogram cap 1.
The electroencephalogram electrode 3 is arranged on the lower surface of the substrate 6; the analog front end module 4 and the wireless transmission module 5 are mounted on the upper surface of the substrate 6.
Furthermore, the brain electricity cap 1 attaches the brain electricity electrode 3 of the brain electricity collection module 2 to the scalp.
The electroencephalogram acquisition modules 2 are multiple. Furthermore, a plurality of electroencephalogram acquisition modules 2 can form a module array, so that high-density acquisition of electroencephalograms is realized.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. A wireless electroencephalogram signal acquisition system, comprising: the electroencephalogram acquisition module, the electroencephalogram cap, the power supply module, the wireless transmission gateway and the upper computer software system;
the electroencephalogram acquisition module and the power supply module are arranged on the electroencephalogram cap; the power supply module is connected with the electroencephalogram acquisition module;
the brain electricity collection module includes: the electroencephalogram electrode, the analog front-end module and the wireless transmission module;
the electroencephalogram electrode is connected with the analog front-end module; the electroencephalogram electrode is used for collecting electroencephalogram signals;
the analog front-end module is connected with the wireless transmission module; the analog front-end module is used for filtering, operational amplification and analog-to-digital conversion of the electroencephalogram signal to obtain a processed electroencephalogram signal;
the wireless transmission module is connected with the wireless transmission gateway; the wireless transmission module is used for transmitting the processed electroencephalogram signals to the wireless transmission gateway; and the wireless transmission gateway transmits the processed electroencephalogram signals to an upper computer software system.
2. The wireless brain electrical signal acquisition system of claim 1, wherein the analog front end module comprises: the ESD protection circuit comprises an ESD protection circuit, a filter circuit, an operational amplifier circuit and an analog-to-digital conversion circuit;
the ESD protection circuit is respectively connected with the electroencephalogram electrode and the filter circuit, the filter circuit is connected with the operational amplification circuit, the operational amplification circuit is connected with the analog-to-digital conversion circuit, and the analog-to-digital conversion circuit is connected with the wireless transmission module.
3. The wireless brain electrical signal acquisition system according to claim 2, wherein the ESD protection circuit is a TPD4E1B06 chip.
4. The wireless brain electrical signal acquisition system according to claim 2, characterized in that the filter circuit is an RC low-pass filter.
5. The wireless electroencephalogram signal acquisition system according to claim 1, wherein the wireless transmission mode of the wireless transmission module is Bluetooth or WIFI.
6. The wireless electroencephalogram signal acquisition system of claim 1, wherein the electroencephalogram acquisition module further comprises: a substrate;
the substrate is arranged on the electroencephalogram cap;
the electroencephalogram electrode is mounted on the lower surface of the substrate; and the analog front end module and the wireless transmission module are arranged on the upper surface of the substrate.
7. The wireless electroencephalogram signal acquisition system according to any one of claims 1 to 6, wherein the number of electroencephalogram acquisition modules is plural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023156854.9U CN214342364U (en) | 2020-12-24 | 2020-12-24 | Wireless electroencephalogram signal acquisition system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023156854.9U CN214342364U (en) | 2020-12-24 | 2020-12-24 | Wireless electroencephalogram signal acquisition system |
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| CN214342364U true CN214342364U (en) | 2021-10-08 |
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| CN202023156854.9U Active CN214342364U (en) | 2020-12-24 | 2020-12-24 | Wireless electroencephalogram signal acquisition system |
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