一种带湿敏元件的射频识别标签  

A RFID tag with humidity sensor

作　　者：霍灵瑜[1,2] 刘丙午[2] 田志勇[2] 

机构地区：[1]北京理工大学管理与经济学院,北京100081 [2]北京物资学院信息学院,北京101149

出　　处：《传感器与微系统》2013年第4期19-22,共4页Transducer and Microsystem Technologies

基　　金：北京市自然科学基金资助项目(KJ201210037037)

摘　　要：提出了一种解决湿度传感器与射频识别(RFID)标签集成问题的新的设计方案。该方案中,湿敏元件与RFID标签的天线形成并联结构,在湿敏元件与RFID标签芯片的连接线路上有一个控制通断的逻辑开关。本方案将传感器的部分功能转移到RFID阅读器上并削减了传感器的部分元件,降低了现有方案的生产成本;以逻辑开关断开时的信号强度作为参考值,解决了湿度检测过程中的定标问题;利用射频模块对能量的耦合转换,从而使整个设计方案不再需要持续的外部电源提供能量。通过实验得到的相关数据,也证明了本方案的可行性。A new design scheme is proposed to resolve integration problem of humidity sensor and RFID tag.The humidity sensor is connected to the RFID tag antennas to form a parallel structure,and there is a logic switch on the line between humidity sensor and RFID tag chip.In this design,some of the functions of sensor are transferred to the RFID reader so that some components of the sensor can be cut,reducing the production costs of existing scheme.By defining the signal strength with the logic switch off as a reference value,the problem of setting a standard is solved in humidity detecting process.RF module can be used to make the energy coupling transformation without requiring the entire design scheme to have an continuous external power source to provide energy.In addition,related datas obtained by experiment proves the feasibility of this design.

关 键 词：湿敏元件 逻辑开关 射频识别标签 传感器 

分 类 号：TH745[机械工程—光学工程]