Abstract
As infrared transmission of information has the advantage of simple control, high reliability transmission characteristics，the design pose an easy-to-read data coding schemes based on minicomputer as the basis for achieving a simple infrared data communications systems. Generating AT89S51 MCU right signal coding, then encoded into the signal modulation frequency of 38 KHz square wave pulse of the carrier, launch tube through infrared signal fired. In the receiver with integrated infrared, do reception demodulation. Finally decode signal in AT89S51. This paper introduces the Infrared Data Communication and the basic principles of data encoding and decoding, put the design of transmitting and receiving into two modules, given the specific hardware and software. In order to facilitate the realization of the entire system function demonstration, the physical design also adds a serial communication and LCD monitors, and other related modules.
Keywords： infrared emission ，infrared receiver，AT89S51 microcontroller, synchronized serial communications
