Ultrasonic Sensor with Accelerometer Based Smart Wheel Chair Using Microcontroller

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract The objective of paper is to design a low cost prototype of a self driven, power assisted smart wheelchair for the disabled belonging to poor community. The wheelchair is equipped with all the necessary electronics to ensure safety and ease of operation. The wheelchair will be made user friendly to reduce the load of caretaker and will boost the confidence level of the disabled person by making him/her self-dependent. Wheelchairs are designed for handicapped people. Children, young or old people can use it. When a person is unable to walk or even when a person is disabled, deformed or paralysed from the legs, a chair with four wheels is generally used for their movement. The system is divided into two main units: Mems Sensors and wheelchair control. The Mems sensor, which is connected to hand on wheel chair, is an 3-axis accelerometer and ultrasonic sensors converts into digital values and gives it to the 8051 controller.