The Research Of A New Wireless Remote Electronic Code Lock Control System

Currently, most of the safes still use traditional mechanical turn-plate code locks whose number of passwords is very limited. We can open it easily by trying passwords. Some safes use electronic code locks, whose advantage is that the amount of its passwords is enormous. We can use it conveniently. However, most of these electronic code locks need the fixed keyboard to entry the passwords. In some cases, the process of inputting passwords can be photographed or remembered easily. Further more, we cannot input passwords any more once the fixed keyboard is broken forcefully. If the safes use remote control system, we can open the safes by using the remote controller instead of the fixed keyboard. The shortages of the remote control system are also obvious. For examples, the format of the code of the remote control system is fixed and the transmiting signal can be intercepted by other automatic data processing-equipments easily. Moreover, this remote control system can be easily deciphered by resending the same signals. So this kind of remote control system is facing the new security hidden danger. Other electronic code locks, such as Fingerprint-Electronic Locks, IC card locks cannot be used widely because they have corresponding defects or insecurity.In order to resolving these insecurity problems of the electronic code lock system, a new wireless remote electronic code lock control system (WRELCS) is proposed in this article. The WRELCS takes the AT89S52 MCU as the core and uses the hopping-code encryption techniques, the short distance radio remote control techniques and the electronic code locks techniques. As a result, the security, reliability and usability are enhanced. And the cost of this system is reduced greatly. So this kind of locks can be widely used. In this article, following aspects are included:1. According to the design goals of this system, the hardware circuit, and the software are given in this article, and each part is also described in detail.2. This ariticl gives a way to encode twelve data by four data pins of the encoder. In order to enhance the security of the wireless data transmission, code-hopping encryption technology which based on KEELOQ is used. So the system has anti-intercept ability and can also prevent the same signals to be resend or to be traced.3. The hardware cost is reduced greatly by using the PIC16F630 MCU to decipher...