Infrared Sensors Microcontroller Interface System for Mobile Robots

A mobile robot consists of three main parts: mechanics (motion), hardware (image acquisition, processing and control units) and software (image processing, motion control and decision making). Every robot needs microcontroller(s), sensors and actuators of some type to interact with the world around it. The most often used sensors are able to measure the distance robot-target, or only detect the obstacles. The response time (measuring time) in some cases is important and the weak (point) spot in robot moving. The sensor-microcontroller communication is a technical problem with timing problems. Infrared (IR) and ultrasonic (Sonar) sensors responses from obstacles are non-linear and depends on the reflectance characteristics of the object surface. In this paper is the sensor model described and realized in distance measuring. The experimental results are discussed.