Abstract:
An automated obstacle avoidance system
for mobile robots is designed and implemented in
embedded system. The purpose of the paper is to
find the obstacle by using five Ultrasonic sensors
and to avoid this obstacle by controlling the speed
and direction of two DC motors using PIC. This
work mainly deals with the automated obstacle
avoidance (AOA) system of this paper by using
Peripheral Interface Controller (PIC) 16F877A
microcontroller that is implemented to design for
AOA system and it is simply evaluated on PIC.
Five Ultrasonic Distance Sensors used in this
system, they are located on the car vehicle and
PIC is operated according to the received sensor’s
signal to find the obstacles. The position of the
obstacle accepted from the sensor sends to
microcontroller as an input and then, this
microcontroller controls the speed of DC motor
mounted on car vehicle by using pulse-width
modulation (PWM). Other DC motor changes the
direction of car vehicle when any obstacle is
detected by sensors. Proteus software was used for
implementing obstacle avoidance system as a
simulation. This control system was intended to
automatically find and avoid the obstacle by using
CCSC compiler software for this model vehicle.
