Unlock instant, AI-driven research and patent intelligence for your innovation.

Miniature wearable electroencephalogram acquisition device

A collector and wearable technology, used in sensors, medical science, diagnostic recording/measurement, etc., can solve the problems of inability to meet the requirements of multi-channel acquisition, inconvenient use, high price, etc., to reduce power consumption and cost, The effect of reducing manufacturing cost and improving general performance

Inactive Publication Date: 2016-03-16
TIANJIN UNIV
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The Quik-Cap electrode cap of American Neuroscan Company is connected with the amplifier by a wire, which is poor in portability and will restrict the free movement of the subjects. In addition, the conductive paste needs to be injected and cleaned before and after the experiment, which is extremely inconvenient to use
[0007] 2. The EEG acquisition equipment designed by EmotivSystems (Neural Technology Company in San Francisco, California) and NeuroSky (Shen Nian Technology Company) adopts wearable technology, which has greatly improved portability, but is expensive. For example, a set of EmotivEPOC+ is It costs $499, and NeuroSky's equipment can't meet the requirements of multi-channel acquisition

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Miniature wearable electroencephalogram acquisition device
  • Miniature wearable electroencephalogram acquisition device
  • Miniature wearable electroencephalogram acquisition device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A miniature wearable EEG collector, see figure 1 The brain electricity collector includes: collecting electrodes 1, a control device 2 and a power supply circuit 3. The control device 2 realizes data transmission with an external host computer 4 through a Bluetooth module. The main design of the EEG collector is divided into two parts: hardware design and software design.

[0042] 1. The hardware design includes: a control device 2 composed of a preprocessing circuit 21, a collection front end 22 and a controller 23.

[0043] Among them, the collection front-end 22 takes ADS1299 as an example, and the controller 23 takes CC2541 as an example for description.

[0044] 2. The software design includes: the SPI communication design between the acquisition front end 22 and the controller 23; and the Bluetooth communication design between the controller 23 and the host computer 4. That is, the SPI communication program between ADS1299 and CC2541, the Bluetooth communication program...

Embodiment 2

[0050] The following describes the solution in Embodiment 1 in detail with reference to the specific drawings. See the following for details:

[0051] 1. Hardware design

[0052] The hardware circuit design is mainly based on the ADS1299 and CC2541 integrated chips of TI (Texas Instruments). It only needs to add a simple peripheral circuit to complete the filtering, amplifying, analog-to-digital conversion, and data of the brain electrical signal. Processing and wireless transmission. The circuit is designed in the AltiumDesigner environment.

[0053] figure 2 Shown is the functional block diagram of the collector, which mainly includes collecting electrode 1, control device 2 (preprocessing circuit 21, ADS1299 chip, CC2541 chip) and power supply circuit 3.

[0054] The collection electrode 1 uses a disk-shaped electrode, which is an ideal scalp electrode in EEG tracing work at home and abroad. It has no damage to the subject, no pain during the examination, and the operation proces...

Embodiment 3

[0073] In order to verify the feasibility of this collector, an EEG signal acquisition experiment was designed and carried out. In this experiment, ADS1299 system and Neuroscan EEG amplifier were used to collect resting EEG signals of the same subject. The sampling frequency was set to 1000 Hz, the reference electrode was placed on the left mastoid, and the EEG signal of the OZ lead was collected for 30 seconds. Afterwards, Matlab software was used to process and analyze the collected data. Picture 10 with Picture 11 Shown are the 16-22s EEG signals collected by the ADS1299 system and Neuroscan EEG amplifier and the corresponding spectrograms of the two signals.

[0074] by Picture 10 (b) and Picture 11 (b) It can be seen that the spectral fluctuations of the two signals are basically similar. There are two high peaks near 10 Hz, and there are also energy peaks at 30 Hz. In order to evaluate the two signals more accurately, the correlation analysis of the frequency domain ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a miniature wearable electroencephalogram acquisition device, which comprises an acquisition electrode, a control device and a power circuit, wherein the control device achieves data transmission with an upper computer outside by virtue of a Bluetooth module; the control device is composed of a preprocessing circuit, an acquisition front end and a controller; the acquisition front end and the controller are in SPI communication; the controller and the upper computer are in Bluetooth communication; an EEG signal is transmitted to the preprocessing circuit and the acquisition front end by virtue of the acquisition electrode, so that filtering, amplification and analog-to-digital conversion of the EEG signal are achieved, and then the preprocessed EEG signal is transmitted to the controller by virtue of an SPI interface; and the preprocessed EEG signal is processed by virtue of a microcontroller which is arranged inside the controller, and the processed data is transmitted to the upper computer by virtue of the Bluetooth module. The electroencephalogram acquisition device disclosed by the invention, under the precondition of guaranteeing signal resolution, can greatly improve universality and can better conform to actual use demands of a user; and the electroencephalogram acquisition device can also reduce production and manufacturing costs.

Description

Technical field [0001] The invention relates to the field of brain electricity collectors, in particular to a miniature wearable brain electricity collector. Background technique [0002] During the life activities of any organism, the cells, tissues and organs in the body will undergo potential changes. This phenomenon is the so-called bioelectric phenomenon. Bioelectricity is one of the most basic characteristics of life activities. When people are in a quiet state or are stimulated by external sound, light, etc., the cerebral cortex will produce continuous and rhythmic potential changes. By placing electrodes on the cerebral cortex or scalp, the waveform of potential changes over time can be collected. It is extracted, magnified, and recorded to obtain an electroencephalogram (EEG). EEG is a comprehensive reflection of human body's nerve cell activities (such as ion exchange, metabolism, etc.). It contains various forms of human thinking state information and a large amount ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0476A61B5/00
Inventor 孟桂芳何峰许敏鹏张力新明东
Owner TIANJIN UNIV