基于双频法电导率在线检测系统的设计  

The Design of the Online Detection System Based on Dual Frequency Method of Electric Conductivity

作　　者：尚凡 田晓霞 付晨 樊立攀 刘成 SHANG Fan;TIAN Xiao-xia;FU Chen;FAN Li-pan;LIU Cheng(Customer Service Center of State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430000 China)

机构地区：[1]国网湖北省电力有限公司客户服务中心

出　　处：《自动化技术与应用》2019年第11期139-142,共4页Techniques of Automation and Applications

摘　　要：通过给定的两种不同频率的正弦激励信号激励电导池,使其可以测出两种不同的溶液阻抗值,计算得出水的电导率,并通过无线通信芯片NRF905将采集的数据发送到上位机,从而实现了对水溶液电导率的实时在线监测。实验证明:该分析仪测量精度高,可以实现350m的无线数据传输,满足大部分工业监控需要,具有一定的工程应用价值。Through the given two different frequency sine excitation signal to stimulate conductance cell,and make its can be measured impedance values two different solutions,then calculated the electrical conductivity of water,and the data will be sent to the PC through the wireless communication chip NRF905,so as to realize the real-time online monitoring of aqueous solution conductivity.Experiments show:the analyzer measurement precision is high,and can achieve 350 m wireless data transmission,and can meet the needs of most monitoring industry,with some engineering application value.

关 键 词：频率 电导率 无线传输 实时监测 

分 类 号：TM934.16[电气工程—电力电子与电力传动]