Design of Intelligent Vehicle Security and Immobilization System

An integrated system is proposed of base station module, key module and tire modules, in order to overcome the independence of tire pressure monitor system, remote keyless entry and immobilization of engine. Tire modules or key module communicate base station module with UHF frequency signal of 434MHZ. The transponder PCF7961 in key module and PJF7992 in base station module authenticate mutually with LF frequency signal of 125KHZ. The result is shown that the system can improve the security and controllability of cars, compress system redundancy, reduce produce costs and optimize the skeleton network.