Measurement system for brain-computer interface

Sučelje između mozga i računala predstavlja izuzetno zanimljivo područje istraživanja jer omogućava komunikaciju ljudi s računalom korištenjem namjere ili usmjerenosti pogleda. Primjena ovog područja je značajna osobito kod nepokretnih ljudi, ali i za učenje odnosno zabavu u virtualnoj stvarnosti. Upravo su najčešće metode za ostvarivanje sučelja između mozga i računala opisane u ovom radu. Proučeni su načini realizacije sustava za prikupljanje bioelektričkih signala mozga, te je kao osnova mjernog sustava izabran sklop ADS1299. Razvojni sustav ADS1299 sklopa je povezan s razvojnim sustavom temeljenim na mikrokontroleru STM32F407VGT6, te je ostvarena njihova međusobna komunikacija. Mikrokontroler je povezan s osobnim računalom gdje je izvedena programska podrška za upravljanje ADS1299 sklopom i prikazom osam kanala EEG-a u stvarnom vremenu. Programska podrška na osobnom računalu je izvedena korištenjem programskog paketa Labview. Korištenjem ovog sustava izvedena su odgovarajuća mjerenja osam kanala EEG-a pri čemu su dobiveni dobri rezultati. Uz EEG, istovremeno su provedena mjerenja i drugih bioelektričkih signala koja su također dala dobre rezultate.Brain computer interface (BCI) is an extremely interesting area of research because it allows people to communicate with the computer using intent or their view orientation. The use of this area is significant especially with immobile people, but also for learning and entertainment in virtual reality. The most common methods for achieving an interface between the brain and a computer were described in this paper. Ways to implement the system for the collection of bioelectric brain signals were studied, as well as the measurement circuit ADS1299 which is basis of whole measurement system. Development system based on ADS1299 circuit was connected to the development system based on microcontroller STM32F407VGT6 and their mutual communication was realized. The microcontroller is connected to a PC where was developed software to control ADS1299 circuitry and display eight channels of EEG in real time. Software support on a personal computer was performed using LabView. The corresponding eight-channel EEG measurements were performed using this whole system and good results were obtained. Simultaneously with EEG, the measurements of other bioelectric signals were measured and also yielded good results