A Design of Autonomous Tracing in Intelligent Vehicle Based on Infrared Photoelectric Sensor

This paper introduces the design of the autonomous tracing intelligent vehicle. The software and hardware design method which realizes the autonomous tracing using the infrared reflective photoelectric sensors as the path recognition module is researched. The system employs Freescale HCS series 16 bit single-chip microcomputer MC9SDG128 as its main controller and an array of photoelectric sensors for recognizing the path information. Single-chip Microcomputer energizes the servo to steer and control the speed of the DC electric motor according to the analysis of the path and speed information that from sensors. Consequently this intelligent vehicle can track the black-guideline automatically and move forward following the line quickly and smoothly. The autonomous tracing principle of photoelectric sensor is presented. The effect of sensors overall arrangement and space on the autonomous trace is discussed.