Research On BCI Based Embedded Technology

Brain Computer Interface (BCI) is a direct information communication and control channel established between human and computer or other electronics devices and it is a wholly new communication system that does not depend on the brain's normal output pathways of peripheral nerves and muscles .As a wholly new information communication and control technology, EEG(electroencephalo-graph))-based BCI may provide the paralyzed, especially those "locked-in" but with intact ideation, with an effective communication and control channels with outside world.Under ordinary experimental conditions, BCI system performs through a specially PC System. For the bulkiness of the PC system, the practical application of BCI was blocked .the development of embedded system makes it possible for the micromation and practicality of BCI system.Embedded system industry is continuously developing swiftly and violently in these years, which has been widely applied to many fields, such as mobile computing device , network device, industrial device, information appliances, automobile electronic , amusement establishment, apparatus and instruments, etc. choosing the reasonable hardware and software platform and design a rational embedded application system is the nodus in nowadays. Under this background, we combine the embedded system with embedded Linux technology, and establish the software and hardware platform with the S3C44BOX of Samsung and uClinux operate system.This thesis first introduced the actuality and foreground of the BCI system and embedded technology, then expatiate the feasibility of the application of embedded technology in BCI system. The second chart introduces the embedded system and embedded operate system, and bring forward the realization project. The third chart lucubrate the GNU-uClinux operate system, include the primary system characteristics. The fourth chart introduced the Linux device drive, and concretely expatiate the LCD driver. The fifth chart introduced the EEG A/D conversion and the driver. The sixth chart lays out the summarization and expectation.