关键词: 无线通信；遥控钥匙；数据通信模块；射频电路；远程控制；门窗控制器；重型卡车

Abstract: Wireless communication technology has been widely used in the development of remote control keys and tire pressure monitoring systems in the automotive field. After investigation, car wireless remote control keys occasionally have problems such as functional failure, short remote control distance, and unstable performance. Aiming at these problems, this paper designs a radio frequency circuit that can be applied to automotive data communication module. Using FS32K as the core single-chip microcomputer, and based on Infineon's TDA5235 and TDK5110F chips as the system transceiver module. The article elaborates the design principle of the system's software and hardware and the process of antenna modeling and simulation in detail, and the system is tested and verified by the method of joint debugging of software and hardware. The experimental results show that the circuit has the characteristics of strong anti-interference ability, long remote control distance, low power consumption, etc., and can be fully applied to automotive data communication module.

Key words: Wireless communication; Remote control key; Data communication module; Radio frequency circuit; Remote control; Door and window controller; Heavy truck