An Ultrasonic Sensor with a Raspberry Pi for Avoiding Obstacle

Abstract

For various applications such as medical applications, vehicle control, robotic arm control, etc., distance measurement of an object plays a vital role. This can be achieved by using sensors like Infrared, Ultrasonic, laser, radar, etc. Performing measurement using ultrasonic sensors is cost-effective and the reliability is relatively high. The working of an ultrasonic sensor in distance measurement is discussed and implemented using Raspberry Pi to show how it can be used for avoiding obstacle. ‘The Raspberry Pi’ has GPIO pins that can be used for connecting different peripherals to it, allowing hobbyists and researchers to use it for a number of embedded applications. The GPIO can be accessed through a number of languages, and the timing accuracy greatly depends on the choice of the language and the Operating system.