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.
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