HU Wei, ZHANG Jianxin

 

(Faculty of Mechanical Engineering and Automation, Zhejiang SciTech University, Hangzhou 310018, China)

 

 

Abstract: Aiming at the problem of vehicle entry system functions and power consumption, the control mechanism of the system control module and the remote control key module, the hardware circuit design and RFID communication algorithm were researched, and methods to reduce the power consumption of the system were summarized, the vehicle entry system of control module based on PIC16F1828 singlechip microcomputer and remote control key module based on PIC16F630 singlechip microcomputer were proposed, The LF receiving and sending circuit of radio frequency chip are respectively TMS37122, TMS3705, the communication frequency of HF and LF are respectively 315MHz, 134.2kHz, and their digital modulation method are respectively ASK and FSK, RFID communication encoding uses Manchester code. The results indicate that the system of remote control key can realize 1.5m control the opening of the door, and is accompanied by the fortification, disarming alarm function and the function of voice prompt, remote control key has the function to learning and reseting, the system was fully functional, and has realized the optimization both the functions and power consumption.

 

Key words: radio frequency identification (RFID); high frequency(HF); low frequency(LF); power; code arithmetic