Development Of Sonar Sensor System For Autonomous Underwater Vehicles (AUV) Application.

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ABSTRACT

This project is about the development of sonar sensor in pupose for Autonomous
Undewater Vehicles (AU) application. The concept of this project is using the ultrasonic

sensor as a main device to nsmit and receive the sinal from the obstacle. The ultrasonic
sensor will be combined to the ultrasonic circuit. Usually, the ultrasonic sensor is oten used in

robots for obstacle avoidance, map building nd especially in navigation. Ultrasonic rnge
sensor is works by emiting a shot burst of 40 Hz sound also known as a "ping" sound
ulrasonic sound rom ultrasonic sensor. In d dition, a small amount of sound energy is
relected by objects in ront the device nd retuned to the detector or the receiver. The
receiver sends his relected signal known as echoes to the microcontroller to detemine how
far away the objects. However, to know how far away the objects it is using the speed of
sound and time it took for the sinal to be relected. Unfotunately, echoes re not completely
a product of distance. There are mny other factors that can alter readings. Diferent the
medium will give the diferent speed and diferent result.

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