Design of wireless EOG system for establishing Human Machine Interface

According to study on the group of persons with severe disabilities shows that many of them have the ability to control their eye movements, which could be used to develop various human machine interface systems to help control artifacts around them. This paper illustrates the design factor associated with the development of wireless Electro-oculography (EOG) system for paralyzed people allowing them to control a machine independently just by their movement of eyes. The proposed system aims at making the signal acquisition module simpler and robust laptop resulting in a very cost effective module. Electrooculography (EOG) is a new technology of placing electrodes on user’s forehead around the eyes to record eye movements. Our system also uses these signals, preprocess them with analog circuits and post process them in software to detect various eye movements and henceforth transmits them using wireless interface. At receiver end the motor control system looks for special sequence of eye movements to achieve desire control of motor either of robot or wheel chair. Keywords-EOG; paralysis; epithelium; HMI; assistive technology; bio-potential