关键词: 单片机,红外遥控,电子密码锁,AT89C51
Abstract
With the electronic technology developing, the traditional lock has tremendous changes. Because there are relatively large traditional lock security risks, in order to satisfy the increasing demands on the lock, through modern electronic technology and mechanical technology combined with, a password to replace the traditional metal key lock came into being. And it designed a series of anti-theft lock. The locks constantly show us the security and convenience.
Through the infrared remote control technology and electronic code lock combined with, it designs a relatively simple infrared remote control lock. Infrared remote control has many advantages, such as infrared devices use infrared diode, so remote control transmitter is easy to miniaturize and inexpensive; by using digital signal coding and the second modulation type, it can achieve multiple messages control, increase remote control function, improve anti-interference of the signal transmission, reduce errors movements, and have low power consumption; infrared will not leak to the outside, and will not result in signal crosstalk; reaction speed, transmission efficiency, stable and reliable. Lock’s control center is AT89C51 microcontroller. With detailed design of hardware and software architecture, it makes lock have many functions ,such as unlock with the short-range wireless remote control, key directions, control alarm, password setting. It is confidential, safe and reliable, low cost, convenient connections, easy to use, for a wide range of characteristics, and particularly suitable for families, hotels, warehouses, private garage and other places.