基于纳米材料的无源RFID温度传感器设计  

Design of Passive RFID Temperature Sensor Based on Nanomaterials

作　　者：陶佰睿[1] 韩月 田朋博 苗凤娟[1] 李晓勤 TAO Bairui;HAN Yue;TIAN Pengbo;MIAO Fengjuan;LI Xiaoqin(College of Communications and Electronics Engineering,Qiqihar University,Qiqihar Heilongjiang 161006,China)

机构地区：[1]齐齐哈尔大学通信与电子工程学院,黑龙江齐齐哈尔161006

出　　处：《传感技术学报》2023年第7期1011-1016,共6页Chinese Journal of Sensors and Actuators

基　　金：黑龙江省自然科学基金项目(LH2023F052);黑龙江省高校学科协同创新成果项目(LJGXCG2023-070);黑龙江省重点研发计划指导类项目(GZ20210073);黑龙江省重点实验室开放课题(WNCGQJKF202105)。

摘　　要：射频识别(RFID)技术与传感器的一体化设计,具有数据采集便捷和部署方便等优点,在智慧农业和食品溯源监测领域具有潜在应用价值。提出一种基于氧化锌(ZnO)/还原氧化石墨烯(RGO)的无源RFID一体化温度传感器设计,传感器天线和电极主要采用微带贴片天线制作,天线及电极结构通过HFSS软件进行仿真设计及优化,然后利用热转印技术在环氧树脂覆铜板上通过化学刻蚀制备图形化电极;传感器的温敏材料为水热法制备的ZnO/RGO纳米复合材料。ZnO/RGO温敏材料阻抗随环境温度发生变化,从而引起RFID射频谐振中心频点偏移,以射频回波损耗和归一化频移来度量环境温度的变化,在10℃~60℃量程范围内,该传感器的温度灵敏度可达0.86 dB/℃,线性度R2=0.99。The integrated design of radio frequency identification(RFID)technology and sensors has the advantages of convenient data collection and deployment.It has potential application value in the fields of smart agriculture and food traceability monitoring.A passive RFID integrated temperature sensor design based on zinc oxide(ZnO)/reduced graphene oxide(RGO)is proposed.The sensor antenna and electrode are mainly made of microstrip patch antenna,the antenna and electrode structure are simulated by using HFSS software to fultill the design and optimization,and then thermal transfer technology is used to prepare patterned electrodes on epoxy copper clad laminates by chemical etching.The temperature sensitive material of the sensor is ZnO/RGO nanocomposite prepared by using hydro-thermal method.The impedance of the ZnO/RGO temperature-sensitive material changes with the ambient temperature,which causes the center frequency shift of the RFID RF resonance.The change of the ambient temperature is measured according to the RF return loss and the normalized frequency shift.In the temperature range of 10℃-60℃,the sensitivity of the sensor is 0.86 dB/℃,and the linearity is R2=0.99.

关 键 词：无源RFID温度传感器 氧化锌/还原氧化石墨烯温敏材料 纳米复合材料 射频回波损耗 归一化频移 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置] TN492[自动化与计算机技术—控制科学与工程]