北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (2): 375-380.doi: 10.13700/j.bh.1001-5965.2016.0108

• 论文 • 上一篇    下一篇

新型非接触式径向C4D传感器优化设计

宋悦1,2, 常亚1,2, 冀海峰1,2, 王保良1,2, 黄志尧1,2, 李海青1,2   

  1. 1. 浙江大学 控制科学与工程学院, 杭州 310027;
    2. 浙江大学 工业控制技术国家重点实验室, 杭州 310027
  • 收稿日期:2016-01-27 出版日期:2017-02-20 发布日期:2016-06-12
  • 通讯作者: 冀海峰,E-mail:hfji@iipc.zju.edu.cn E-mail:hfji@iipc.zju.edu.cn
  • 作者简介:宋悦,女,硕士研究生。主要研究方向:检测技术与自动化装置;冀海峰,男,博士,副教授,硕士生导师。主要研究方向:检测技术与自动化装置。
  • 基金资助:
    国家自然科学基金(51476139,61573312)

Design and optimization of a new type of contactless radial C4D sensor

SONG Yue1,2, CHANG Ya1,2, JI Haifeng1,2, WANG Baoliang1,2, HUANG Zhiyao1,2, LI Haiqing1,2   

  1. 1. College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China;
    2. State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, China
  • Received:2016-01-27 Online:2017-02-20 Published:2016-06-12
  • Supported by:
    National Natural Science Foundation of China (51476139,61573312)

摘要: 基于电容耦合式非接触电导检测(C4D)技术,设计研发了一种新型径向结构的非接触式电导测量传感器。该传感器利用串联谐振的原理,引入电感模块以消除耦合电容对测量的不利影响,扩大了测量范围,提高了测量灵敏度。同时,用仿真与实验相结合的方法对传感器的电极张角进行了优化研究。在5.0、7.5、9.1、10.2和12.0 mm 5种不同内径的管道中进行了电导测量实验,电导测量相对误差均不超过5%,实验结果表明,所设计的新型非接触式径向C4D电导测量传感器是可行和有效的。

关键词: 电导检测, 电容耦合式非接触电导检测(C4D), 径向结构, 串联谐振, 传感器优化设计

Abstract: Based on capacitively coupled contactless conductivity detection (C4D) technology, a new contactless conductivity sensor with radial structure is designed and developed. Series resonance principle is used to overcome the unfavourable influence of the coupling capacitances by introducing an inductor. Since the background signal produced by the coupling capacitances can be eliminated, the measurement range of the developed radial C4D sensor is extended, and the measurement sensitivity is improved. The electrode angle of the new radial C4D sensor is optimized by the simulation results and experimental results. In order to verify the effectiveness of the developed sensor, conductivity measurement experiments are carried out in five insulated pipes with different inner diameters of 5.0, 7.5, 9.1, 10.2 and 12.0 mm respectively, and the relative error of conductivity measurement is less than 5%. The experimental results show that the developed contactless conductivity sensor is feasible and effective.

Key words: conductivity detection, capacitively coupled contactless conductivity detection (C4D), radial structure, series resonance, sensor optimization design

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