一种LC谐振无线无源温度传感器的研究  

Research on a Wireless Passive Temperature Sensor of LC Resonant

作　　者：王渊朝[1] 彭斌[1] 黄武林[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,成都610054

出　　处：《传感技术学报》2013年第10期1341-1344,共4页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目(61223002)

摘　　要：无线无源传感器在工业领域具有重要的应用。设计了一种基于高介电常数陶瓷基板的无线无源LC谐振温度传感器,采用电感耦合的方式无线测试了传感器在不同温度下的特性。测试结果表明所制作的无线无源温度传感器谐振频率为1.2 MHz,随着温度的升高其谐振频率线性降低,灵敏度为2.3 kHz/℃。制作的器件实现了非接触式的温度测量,可以在比较恶劣的环境下使用。Wireless passive sensors have great potential applications in industry. A wireless passive LC resonant tem-perature sensor based on ceramic with high dielectric constant was designed and prepared in this work. The characteristics of the sensor had been measured under different temperature by wireless inductor coupling. The results show that the resonant frequency of the wireless passive temperature sensor is 1. 2 MHz, The resonant frequency of the sensor decreases linearly with the increasing of the ambient temperature. The temperature sensitivity of the sensor is 2. 3 kHz/℃. Temperature detection is realized wirelessly with the sensor. The designed sensor is suitable for working in harsh environments for temperature sensing.

关 键 词：无线无源传感器 温度 无线检测 LC谐振 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]