基于SAW抗干扰传输的无线传感器网络温测方法  

Temperature Measurement Method of Wireless Sensor Network Based on SAW Anti-interference Transmission

作　　者：李春东 卞振宇 高源 郑华[3] LI Chundong;BIAN Zhenyu;GAO Yuan;ZHENG Hua(School of Electrical and Automation, Wuhan University, Wuhan 430072,China;State Grid Liaoning Electric Power Co., Ltd. Tieling Power Supply Company, Tieling 112000,China;School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206,China)

机构地区：[1]武汉大学电气与自动化学院,湖北武汉430072 [2]国网辽宁省电力有限公司铁岭供电公司,辽宁铁岭112000 [3]华北电力大学电气与电子工程学院,北京102206

出　　处：《压电与声光》2020年第4期471-476,共6页Piezoelectrics & Acoustooptics

基　　金：国家电网公司科技基金资助项目(SGLNTL00FZJS1800475)。

摘　　要：为快速准确地预测系统的健康状况,提出了基于声表面波技术的无线传感器网络温度测量方法。该检测方法利用交换机触发的单向雷达脉冲,通过无线电调制解调器提供发送和接收信道。根据传感器结构对协作目标的截面特性进行表征,以恢复定义换能器材料特性的物理量。同时给出了询问器至询问器,以及传感器至询问器在通信中的抗干扰处理方法。持续1年半的室内和室外温度测量实验验证了所提方法的有效性,可支持工业系统监测,健康状态评估。In order to quickly and accurately predict the health status of the system,a temperature measurement method based on SAW technology in wireless sensor network is proposed.The detection method uses the unidirectional radar pulse triggered by the switch to provide the transmission and reception channels through the radio modem.According to the structure of the sensor,the cross-section characteristics of the cooperative target are characterized to restore the physical quantity that defines the material characteristics of the transducer.At the same time,the anti-interference processing methods in the communication from interrogator to interrogator and from sensor to interrogator are given.The effectiveness of the proposed method has been verified by the indoor and outdoor temperature measurement experiments lasting for one and a half years,which can support industrial system monitoring and health status assessment.

关 键 词：声表面波技术 无线传感器网络 抗干扰 温度测量 调制解调器 

分 类 号：TN65[电子电信—电路与系统] TP212[自动化与计算机技术—检测技术与自动化装置]