基于CAN总线的汽车电子标识系统

Vehicle Electronic Identification System Based on CAN Bus

针对当前的交通系统存在的各种问题,采用短距离双向无线传输方式,工作频率采用国际通用的ISM频段,发射功率低、接受灵敏度高、对周围干扰小、无需申请许可证、传输速率为9 600 b/s,有效传输距离可以达到50 m。通过加装和汽车内部的CAN总线相连的CAN总线控制电路,实现了汽车标识和控制的一体化。同时还采用了基于联网的数据库技术,来实现全国各地车辆信息的共享,并通过数据库的访问权限实现对车辆的有效管理。

In view of many kinds of questions exist in current transportation system,the integration of vehicle identifying and controlling through installing CAN bus control cireuit connected with vehicle interior CAN bus in the system has been realized. The short distance bidirectional wireless transmission mode is used and the international general ISM frequency band is adopted as the operating frequency in the system,of which the emissive power is low, the receipt sensitivity is high,and the interference to ambient is small. This system does not need to apply for the permit;its transmission speed can reach 9 600 bps and the distance can range 50 m. Meanwhile,information sharing in country by using database technology based on the internet and effective management of vehicles through database visit jurisdiction technology has been achieved.