【摘要】 一种汽车智能无匙门控系统设计方法。结合微芯公司PIC16F639微控制器的特性,设计出相应的无线收发通信系统,给出了硬件电路和软件流程。在此基础上,针对短程无线通信的特点提出了系统改进措施,讨论了数据传输格式和差错控制原理。实验结果表明,该系统在功耗、通信距离及可靠性方面均达到较高指标。更多还原

【Abstract】 Introduces a method of designning passive keyless vehicle entrance system.The corresponding communication system for wireless data switching are described in detail , based on MICROCHIP’s microcontroller PIC16F639. The hardware circuit and software flowchart are presented. Furthermore, some possible improvement are proposed according to the characteristic of short-haul wireless communication. Data format and error control method are discussed. Our expertimental results suggest that the system possesses many advantages in power consumption,communication distance and reliability.更多还原