基于可见光通信及RFID技术的智能车联网系统设计

Design of intelligent vehicle networking system based on visible light communication and rfid technology

构建基于可见光通信及RFID技术的智能车联网系统,提高车联网的信息采集能力。设计车联网系统总体架构,主要分为RFID数据无线收发模块、可见光通信模块、信息处理模块。硬件设计,采用RFID技术采集车辆信息,采用可见光通信获取周围车辆信息,通过嵌入式处理器连接车联网系统总线接口与外部设备。软件设计,通过采用分块均衡控制算法实现智能车联网系统的信道优化设计,引入信道切换队列的队头元素计算最佳通信信道,实现智能车联网系统的信道均衡控制。测试结果表明,当节点速度为1 m/s时,本系统的端到端平均时延为33 s,当数据发送率为0.8 m/s时,本系统的吞吐量为189 kb/s。车联网系统对交通安全隐患的平均响应耗时为1.0 s。证明了设计的智能车联网系统应用性能较好,能够有效减少交通安全事故的发生。

Build an intelligent car networking system based on visible light communication and RFID technology,and improve the information collection capability of car networking.Design the overall architecture of the car networking system,which is mainly divided into RFID data wireless transceiver module,visible light communication module and information processing module.Hardware design:RFID technology is used to collect vehicle information,visible light communication is used to obtain information of surrounding vehicles,and embedded processor is used to connect bus interface of vehicle networking system with external equipment.In software design,the channel optimization design of intelligent vehicle networking system is realized by adopting block equalization control algorithm,and the best communication channel is calculated by introducing the queue head element of channel switching queue,so as to realize the channel equalization control of intelligent vehicle networking system.The test results show that when the node speed is 1m/s,the end-to-end average delay of this system is 33 s,and when the data transmission rate is 0.8 m/s,the throughput of this system is 189 kB/s.The average response time of vehicle networking system to traffic safety hazards is 1.0 s.It is proved that the designed intelligent vehicle networking system has good application performance and can effectively reduce the occurrence of traffic accidents.