Brain–computer interface (BCI) technology is a key issue in neural engineering, which can manipulate machine by electroencephalography (EEG). An important question surrounding the use of the BCI is the design of a wearable electroencephalography recording and processing equipment. We report the design and fabrication of a novel system based on dry electrodes, in which skin preparation and application of electrolytic gel are not required. In this study, an EEG-based BCI system, which includes a wireless transmitter module and an receiver module was designed, EEG is acquired using dry electrodes, amplified and processed by an application-specific integrated circuit (ASIC), and transmitted to the receiver by RF chip. The BCI system can obtain the subject’s degree of concentration, and those trained subjects have the ability of controlling the machine by changing their EEG signals. A experiment that controlling a toy car using the BCI system is successfully performed. The wearable transmitter module weighs 39 g only and easy to wear. The transmitter consumes 60 mW of dc power and generates an output power of 0 dBm. The BCI system is suitable for long-term EEG monitoring in users’ daily life. This system is feasible for further extension.
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August 2011
Research Papers
Dry Electrode Based Wearable Wireless Brain–Computer Interface System
Guo Kai,
Guo Kai
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors
, Chinese Academy of Sciences, Beijing 100083, China
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Pei WeiHua,
Pei WeiHua
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors
, Chinese Academy of Sciences, Beijing 100083, China
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Wang Yu,
Wang Yu
State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; School of Physical Science and Technology,
LanZhou University
, LanZhou 730000, China
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Xu Bing,
Xu Bing
Beijing ShiYou Technology Co. Ltd.
, Beijing 100089, China
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Gui Qiang,
Gui Qiang
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors, Chinese Academy of Sciences
, Beijing 100083, China
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Liu Jian,
Liu Jian
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors, Chinese Academy of Sciences
, Beijing 100083, China
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Chen HongDa
Chen HongDa
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors, Chinese Academy of Sciences
, Beijing 100083, China
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Guo Kai
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors
, Chinese Academy of Sciences, Beijing 100083, China
Pei WeiHua
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors
, Chinese Academy of Sciences, Beijing 100083, China
Wang Yu
State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; School of Physical Science and Technology,
LanZhou University
, LanZhou 730000, China
Xu Bing
Beijing ShiYou Technology Co. Ltd.
, Beijing 100089, China
Gui Qiang
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors, Chinese Academy of Sciences
, Beijing 100083, China
Liu Jian
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors, Chinese Academy of Sciences
, Beijing 100083, China
Chen HongDa
State Key Laboratory on Integrated Optoelectronics,
Institute of Semiconductors, Chinese Academy of Sciences
, Beijing 100083, China
J. Nanotechnol. Eng. Med. Aug 2011, 2(3): 031007 (5 pages)
Published Online: January 10, 2012
Article history
Received:
May 12, 2011
Revised:
November 29, 2011
Online:
January 10, 2012
Published:
January 10, 2012
Citation
Kai, G., WeiHua, P., Yu, W., Bing, X., Qiang, G., Jian, L., and HongDa, C. (January 10, 2012). "Dry Electrode Based Wearable Wireless Brain–Computer Interface System." ASME. J. Nanotechnol. Eng. Med. August 2011; 2(3): 031007. https://doi.org/10.1115/1.4005487
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