基于有源RFID技术的定位系统研究

摘要

Aiming to the problems of body to absorb, metal interference, a limited number of identified of the passive radio frequency identification technology in practical application, and inefficient of traditional attendance machines, a method of monitoring for entrance based on active 2.4G radio frequency identification technology is proposed. Compared with the traditional attendance methods, it is more accurate, convenient and efficient which using technology of waking up and to the positioning of 2.4G radio frequency identification tags by 125KHz triggers. What is more, it has extended the service life of active radio frequency identification equipments effectively. Further more, the test scenario is built by lower frequency trigger, Card Readers, radio frequency identification tags and other equipments, in which monitoring system for assets access is tested for 30 days. The test results show that the monitoring system for entrance based on active radio frequency identification technology has high reliability and practicality.%针对传统出入口监控管理方式的效率低下及无源射频识别技术在实际应用中存在的金属物干扰、人体吸收、识别数量有限等问题，提出一种基于有源2.4 G射频识别技术的出入口监控管理方法。该方法利用125 kHz激励器唤醒2.4 GHz射频识别标签及标签定位的技术，比传统出入口监控管理方式更加准确、便捷、高效；同时，有效地延长了有源射频识别设备的使用寿命。采用低频触发器、读卡器和有源2.4 G射频识别标签等设备，搭建试验环境进行为期30天的测试；结果表明，基于低频触发的有源射频识别出入口监控管理系统具有较高的可靠性和实用性。