摘要
设计并实现了一种基于无源超高频RFID温度标签的嵌入式温度监测系统,系统包括课题组研发的嵌入了CMOS温度传感器的无源超高频RFID温度标签、ZY-H2000手持式读写器和嵌入式温度监测软件。设计了一种动态功率匹配算法,能够使温度标签在最佳测温功率下工作,确保了温度标签测温数据的准确性。算法中加入计时器机制,并通过RSSI值判断起始功率,大大减少了测温所需时间。测试结果表明,手持机与温度标签相距10 cm、30 cm、50 cm时,测温误差均在±1℃以内。
An embedded temperature monitoring system based on passive UHF RFID temperature tags is designed.The system consists of passive UHF RFID tags with CMOS temperature sensor,the ZY-H2000 handheld reader and an embedded temperature monitoring software developed on the handheld.Since the temperature tags need to work in optimum transmit power,a dynamic power matching algorithm is designed,which ensures the accuracy of temperature data.The algorithm with timer mechanism and RSSI val-ue to determine the starting power,greatly reduces the time required for the temperature measurement.The test results show that when the distance between the tag and the handheld is respectively 10 cm,30 cm and 50 cm,the temperature measurement error is less than ± 1 ℃.
出处
《电子技术应用》
北大核心
2016年第7期57-59,63,共4页
Application of Electronic Technique
基金
国家自然科学基金资助项目(61306027)