远程防盗汽车PKE系统设计

针对目前汽车PKE系统无远程防盗功能的问题，提出了一种基于STC单片机的具有远程防盗功能的汽车PKE系统设计方案。设计了钥匙模块的高频发射与低频唤醒接收电路，车载模块的高频接收与低频发射电路，以及车栽模块与GSM模块的通信连接。分析了滚动码加解密过程以及钥匙模块与车载模块之间的通信协议。此设计方案完善了PKE防盗功能，能够满足实际应用中的防盗和通信要求。

Design of Remote Security Car PKE System

In view of the disadvantage of current car PKE system,this paper proposes a design with remote security function based on STC single chip microcomputer.We design high frequency launching circuit and low-frequency awakening receiving circuit for the key module,high frequency receiving circuit and low frequency launching circuit for the car-carrying module,and communications links between car module and the GSM module.We also analyzes the KEELOQ adding and decrypting process,and communication protocol between the key module and the car-carrying module.The design improves the current PKE security function,and can meet requirements of both communication and practical guarding against theft.