Abstract：According to the demands of Low-frequency stage and the problems of existing intelligent lock, a design of radio frequency identification (RFID) intelligent lock based on 125kHz was presented. The design adopt STM8s103F3 as main control chip and AT24C02 as memory data chip. The characteristics of system was employing operational amplifier circuit to acquire message of radio frequency identification which could decrease costing and increase decoding speed. The hardware circuit of intelligent lock was designed, it had the functions of radio-frequency signal acquisition and amplification, Manchester code decode and physical deblocking action. The design of hardware circuit and decoding algorithm were introduced. The system application and analysis results showed that the system could work stability and the operation effect was good.
2018, Vol. 31 
