abstract<br>This design uses AT89C51 single chip microcomputer to realize the intelligent temperature control of infrared induction wireless transmission in the room. Specific control process: the slave detects the infrared and temperature, nRF24L01 sends the data to the receiving terminal for processing and display, controls the cooling and heating of two relays, and the relay turns off if no human is detected 5 minutes later.<br>This design is composed of wireless transmission module, LCD module, infrared detection module, temperature measurement module and compressor drive circuit. The LCD module mainly displays the temperature measured by the temperature measurement module and the temperature set by the air conditioner, with the accuracy of 0.1; the infrared detection module is mainly used to detect whether there are people in the house, and when there is no one, the output of the single chip microcomputer outputs low-level signals; the wireless transmission module is used to communicate the host and slave computers, and send the measured temperature and infrared detection results to the single chip microcomputer; this intelligent The control system is simple and convenient, economical and effective, and can achieve good control. It can be designed and put into operation in daily life.<br>Key words control wireless temperature infrared detection<br>
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