Integration of the EOG Data

After recording the EOG signals in the MATLAB software, we will differentiate whether the individual is looking up and down or left and right. When the subject looks up or down, the motor in the linear actuator (built into the swivel chair) will move the seat correspondingly. If the individual looks up, the linear actuator will extend forcing the seat upwards with the disabled patient in the chair. If the individual looks down, the linear actuator will retract allowing the weight of the subject to push the chair slowly downwards. Next, we will have a motor controlled by the left and right eye movements. This motor will be connected to a timing belt which is wrapped around a swivel base of the chair allowing rotation up to a certain degree (to be established). Therefore, when the individual looks right, the motor will turn on in the corresponding direction, which will rotate a surrounding gear. This gear will then be attached to the timing belt resulting in the rotation of the timing belt which surrounds the base of the chair. This base will then rotate causing the rotation of the chair as a whole with the disabled person in it. The same system of operations occur when the subject looks to the left but in the opposite direction (see figure 15). Both the motor and the linear actuator will be powered by 12V of power which will be connected to a circuit allowing them to be switched on and off based on the collected EOG signals.

Figure 15: Flowchart depicting translation of EOG signals to mechanical aspects of chair design