EOG(Electro-oculogram) 신호를 이용한 Interface 장치 개발

This paper presents a development of interface device for electro-oculogram(EOG) signal and it's application to the wireless mouse of wearable PC. The interface device is composed of five bio-electrodes for detecting oculomotor motion, several band-pass filters, instrumentation amplifier and a microprocessor, we have first analyzed impedance characteristics between skin and a bio-electrode, since the impedance highly depends on human face, it's magnitude differs from person. this interface device was applied to develop a wireless mouse for wearable PC, as a Bio Machine Interface(BMI). Where in the prompt on PC monitor is controlled by only EOG signals, this system was implemented in a Head Mount Display(HMD) unit, experimental results show the accuracy of above 90%.