ABSTRACT
This paper describes a design based on infrared measurement AT89S52 MCU barrier circuit, the design uses a single chip to connect the infrared receiver on the obstacles to achieve first HS0038 reflected infrared signal decoding output control, infrared encoder circuit using 32-key IR codes launches integrated chip HT6221 completed, the circuit also set up sound and light alarm circuit, when the head can be measured from the test range with barriers to output sound and light alarm. Text focuses on the hardware system are given parts of the circuit description, describes the function and application of AT89S52, HS0038 first application of the infrared receiver, buzzer driver circuit, and the procedures for the various circuit modules to achieve and so on. The circuit is mainly used in car, obstacle avoidance, braking and other fields of industrial machinery, scalability, strong.
Keywords : HS0038,AT89S52，HT6221 Infrared Remote Control
