Vol-2 Issue-4 2016 IJARIIE-ISSN(O)-2395-4396 2870 www.ijariie.com 237 DEVELOPMENT OF AN EOG BASED HUMAN MACHINE INTERFACE TO CONTROL A 3R ROBOT Saakshi Singh Dhankar 1 , Dr. Manoj Soni 2 1 M.tech Student, Mechanical and Automation Engg., IGDTUW Kashmere Gate, Delhi, India 2 Associate professor, Mechanical and Automation Engg., IGDTUW Kashmere Gate, Delhi, India ABSTRACT To improve the quality of life of persons with severe disabilities rehabilitation devices are been developed increasingly. This paper describes one such novel technique. Usually persons suffering from extreme disabilities have the ability to control their eye movements. Electrooculography (EOG) is a technology of sensing eye signals and is used efficiently and effectively in developing bio-based human to machine interface (HMI) and human computer interface (HCI). Human to machine interfaces have received more and more attention of researchers in recent years. The described paper explains a simple electrooculography (EOG) based eye- control method to control 3R Robot. Human to machine interfaces have received more and more attention of researchers in recent years. Four electrodes are used to capture the EOG signal: two to detect horizontal movement and two to detect vertical movement. The captured signal is processed using a cost effective signal conditioning circuitry and is given as an input to the microcontroller to produce different control signals. These controls signals are transmitted using RF transmitters after encoding to the application part (receiver part). Once the commands are received, then according to the received combination (RL, LR, RR, LL, BB) the microcontroller which is programmed to drive the two servo motors of the robotic arm in required fashion moves the robotic arm up, down, left, right. An accuracy of 90% and processing speed of 5actions/min is achieved. The results show that the EOG based eyerobot system has stable performance and can be a good assistive technique for people suffering from extremely limited peripheral mobility. Keyword:- Elctro-oculogram (EOG), Corneal-retinal potential (CRP), Signal conditioning, Instrumentation amplifier, logical combination 1. INTRODUCTION A large number of people in our society suffer from severe disabilities due to brain damage, neurological disorders, accidents etc. These patients depend on their families or nurses for their day to day activities including communication, mobility, equipments like fan, light, ac etc. controlling etc. To improve their quality of life rehabilitation devices are being developed increasingly which enable the disable persons to communicate, study, play or control equipments independently. In 1849 it is found that a relationship exists between the movement of eye and electrode potentials from the surface of the skin. It was proved by medical studies that the potential difference, commonly known as the resting potential, arises from hyperpolarisations and dehyperpolarisations between the retina and the cornea. These resting currents flow in a continuous manner in the direction from retina to cornea, creating an electric filed with retina acting a negative pole and cornea acting as positive pole. The orientation of this field changes with the rotation of eyeballs. Therefore, a human eyeball can also be compared to a spherical battery with cornea being positive and retina being negative. It is possible to consider that the eye socket is embedded with a battery like this which rotates in the around the torsional centre. The micro currents produced flow radially similar to that of a battery from the positive pole towards the negative pole in the orbit where conducting material being the conductive tissue. A standing potential is generated around the eye by these currents, and