基于电流感应取电的无线测温节点  

Wireless Temperature Measurement Node for Power-taking Based on Current Induction

作　　者：丁柏文 沈金荣[1] 唐启阳 柴一伟 DING Bai-wen;SHEN Jin-rong;TANG Qi-yang;CHAI Yi-wei(School of Mechanical and Electrical Engineering,Hohai University,Changzhou 213000,China)

机构地区：[1]河海大学机电工程学院,江苏常州213000

出　　处：《仪表技术与传感器》2020年第12期21-25,共5页Instrument Technique and Sensor

基　　金：江苏省重点研发计划(BE2016067);江苏省科技成果转化专项资金项目(BA2016019)。

摘　　要：为实现电力设备薄弱节点的实时测温及解决传感器使用寿命受限于外置电池容量的问题,设计了一款基于电流感应取电的无线测温节点。该节点采用电流感应取电模块作为工作电源;采用NTC热敏电阻结合恒压分段测量法,实现温度测量;采用2.4 GHz高频宽带无线通讯实现测温数据传输。实验表明:当输电导线流经电流有效值为3.6 A时,电流感应取电模块输出电压可稳定在3.28 V;27~100℃测温范围内,测温绝对误差最大值为0.67℃;6 m通讯范围内,测温数据的无线传输成功率达99%。To realize the real-time temperature measurement of weak node that exists in the power equipment and solve the service life of the sensor that is limited by the external power supply capacity,a wireless temperature measurement node for power-taking based on current induction was designed.The node consisted in a current induction power-taking module as the working power supply,with NTC thermistor combined with constant voltage sectional measurement method to measure temperature,and with 2.4 GHz high frequency broadband wireless communication to transmit the temperature measurement data.The experimental results show that when the effective value of the current through the transmission cable is 3.6 A,the voltage output by the above module can be stabilized within the range of 3.28 V,within 27~100℃,the maximum absolute error of temperature measurement is 0.67℃,within 6 m communication range,the wireless transmission rate is up to 99%.

关 键 词：感应取电 无线测温 NTC热敏电阻 STM8 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]