传感技术学报2011，Vol.24Issue(1)：24-29,6.DOI:10.3969/j.issn.1004-1699.2011.01.006
超高频射频识别湿度传感器的分析与测试
Analysis and Test of UHF RFID Humidity Sensor
摘要
Abstract
The combination of the RFID reader and the tag is able to measure humidity. Theoretical analysis, mathematical simulations, and experiments for EPC Gen2 tags used as humidity sensors are conducted to deduce the reason why RFID tags can be used as humidity sensors. According to the analysis, an appropriate RFID tag used for humidity sensing requires that the impedance matching factor between the tag antenna and the tag changes monotonically when the humidity changes. The tag can be used to measure humidity when the impedances of the tag antenna and the tag chip are perfectly matched. The experiment considers that the moisture content absorbed by paper when the humidity rises is different from that desorbed by paper when the humidity decreases and the analysis is given.关键词
传感器应用/湿度传感器/射频识别/无线通信Key words
sensor application/ humidity sensor/ RFID/ wireless communication分类
信息技术与安全科学引用本文复制引用
关硕,奚经天,王俊宇..超高频射频识别湿度传感器的分析与测试[J].传感技术学报,2011,24(1):24-29,6.基金项目
"十一五"国家科技支撑计划项目资助(2008BAI55B07)"药品安全追溯管理射频识别技术研究" （2008BAI55B07）
