A simple infrared remote control combination lock design and implementation

The introduction

With the progress of science and technology and social and economic development, the electronic combination lock to replace the traditional mechanical lock has become an inevitable trend. Combination lock system based on single chip microcomputer, directly to the program a good password is stored in the on chip EPROM, but it is not easy to realize the change of password; If you want to finish to modify the password function, use off chip serial E2PROM chips was introduced to achieve more. In this paper, we study and design of a microcontroller based infrared remote electronic combination lock, not only has common combination lock lock, unlock, alarm intelligent control etc, and under the condition of not expand E2PROM chips was introduced, can realize eight password arbitrarily modify functions, saving hardware resource, reduced the system product, this is the design of an innovative point. Also increased the characteristics of the remote control lock. So the system is not only the cost is low, the secrecy is strong, more suitable for the normal human body should not be close to special occasions, such as high radiative zone, such as high transmission area.