Infrared collision avoidance mobile robot

Abstract

Sensors nowadays are one of the main parts in the development of robot. There are many types of sensors which usually used to accomplish different function by applying different measurement techniques, and using different interfaces to a controller. Basically, there are two categories of sensors, which are active and passive sensors. In mobile robot application, sensors are used to help the mobile robot identify its surroundings. One of the ability that mobile robot must have is ability to avoid from collide with any obstacles around it. This project is about to develop a mobile robot with the collision avoidance system. To do this, the IR01A infrared (IR) sensor is used. IR sensor is one type of sensor which is including in active sensors category. Several IR01A sensors mounted around the periphery of this mobile robot and linked together to a control circuit which can tell the robot that ‘something is out there’, and direct to robot to divert against collision. The PIC16F877A chip is used as the microcontroller in the control circuit and C language is used as the assembly code for the PIC. The outcome of this project is with maximum voltage of 4.15 V supplied to the IR sensor, the mobile robot able to detect and avoid the obstacles positioned at 10 cm in front of it.