单片机红外遥控系统设计—毕业论文.doc

iouly, remote control systems used specific remote control decoding circuits, but due to the limitations of functionality and performance, they could only be used in certain specific fields. However, using a single-chip microcontroller can achieve remote control programs, convenient programming, and the flexibility to set operation codes. This design specifically uses the AT89C51 single-chip microcontroller, comprehensively utilizing knowledge of the single-chip microcontroller's interrupt system, timers, counters, etc., to design an infrared remote control system. This system includes both transmission and reception parts, with the application program controlling operations using coding/decoding chips. The transmission part includes a keyboard matrix, coding modulation, and an LED infrared transmitter; the reception part includes an infrared receiver chip, a photoelectric converter, and a demodulation circuit. Its advantages lie in its compact hardware circuit, comprehensive software functionality, and superior cost-effectiveness, making it of certain application and reference value. Keywords: single-chip microcontroller AT89C51, LED infrared transmitter Hunan University of Science and Technology, Wenshan College, Undergraduate Thesis II. Abstract: With the improvement of people's living standards and the progress of science, many useful remote control systems have emerged in people's daily lives. Previously, remote control devices with simple functions used specific remote control coding and decoding circuits, which had limitations and were only applicable in certain fields. However, using a single-chip microcontroller, remote control programs can be easily implemented, allowing for convenient programming and flexible operation code setting. This design focuses on the use of the AT89C51 single-chip microcontroller, combining knowledge of interrupt systems, timers, counters, and other features, to develop an infrared remote control system. The system consists of both a transmitter and receiver, utilizing coding/decoding chips to control operations. The transmitter includes a keyboard matrix, coding modulation, and an LED infrared transmitter, while the receiver consists of an infrared receiver chip, photoelectric converter, and demodulation circuit. The advantages of this system lie in its compact hardware circuit, comprehensive software functionality, and superior cost-effectiveness, making it of significant application and reference value. Keywords: single-chip microcontroller AT89C51, LED infrared transmitter