Distance Measuring System Based on STM89C52 Single Chip Computer and Ultrasound Sensor

An accurate and cheap solution to measure distance in 3D space is of great importance in a range of applications. In this paper, we introduce an embedded range measurement system that consists of a core STM89C52 single chip computer, an ultrasonic module, an input module, an alarming module, a display module, an ultrasonic module, and a power module. The corresponding software is also developed with C programming based on these hardware devices. Experiments and tests prove that the proposed system can accurately report the distance in the range between 0.15 meters and 3.7 meters, and the error is less than 0.8% for smooth surfaces. In addition, the proposed device is also cheap and portable and can be used in a range of practical scenarios.