一种应用于车载的无线射频识别系统

Design of a RFID vehicle system

本系统是基于数字通信原理、利用集成单芯片窄带超高频收发器构建的无线识别系统。阐述了该无线射频识别系统基本工作原理和硬件设计思路,并给出了程序设计方案的流程图。从低功耗、高效识别和实用角度设计适用于车载的射频识别标签。测试结果表明,本系统在复杂路面状况(繁忙路面)的条件下可实现300 m范围内有效识别,视距条件下可达到500m范围有效识别。

This wireless identification system is based on the principles of digital communications and the application of integrated single-chip narrowband UHF transceiver.It not only describes basic working principle and hardware design of the radio frequency identification system,but also gives a flow chart of program design.The sustainable,portable radio frequency identification tags are designed with the following features： sustainable power supply with low power consumption,efficient identification and high efficiency.Test results show that the system in the complicated road conditions can achieve effective identification within the range of 300 meters.The range of visibility can achieve effective identification within 500 meters.