新澳门游戏网站入口 院报 ›› 2013, Vol. 30 ›› Issue (2): 84-87.DOI: 10.3969/j.issn.1001-5485.2013.02.018

• 仪器设备与测试技术 • 上一篇    下一篇

一种新型含水率传感器装置

张磊1a,2，郭海庆1a,1b，谢兴华2，郭加艳1a   

  1. 1.河海大学 a.土木与交通学院；b.岩土力学与堤坝工程教育部重点实验室，  南京 210098;2.南京水利澳门网络游戏网站官网首 院 水文水资源与水利工程科学国家重点实验室，  南京 210029
  • 收稿日期:2012-04-02 修回日期:2012-07-14 出版日期:2013-02-01 发布日期:2013-02-01
  • 作者简介:张 磊（1986-），男，山东枣庄人，硕士研究生，主要从事边坡渗流研究
  • 基金资助:

    国家自然科学基金项目资助（51139001）；国家自然科学基金项目资助（51109139）;水利部公益性行业科研专项经费项目资助（201101005）

A Novel Moisture Content Sensor

ZHANG Lei1,3, GUO Hai-qing1,2, XIE Xing-hua3, GUO Jia-yan1   

  1. 1.College of Civil and Transportation Engineering, Hohai University, Nanjing 210098 China;2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098 China; 3.State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China
  • Received:2012-04-02 Revised:2012-07-14 Published:2013-02-01 Online:2013-02-01

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摘要：

土是一种多项体系，含水率对土的导电性起控制作用，据此自行设计了一种新型的含水率传感器装置,用电路板上保护电阻两端的电压作信号反映含水率的变化。将传感器在砂子和砂土中进行标定，得到含水率与电压的线性变化关系，并将该装置运用在雾雨入渗滑坡模型试验中测试含水率的变化情况。由测量结果知：该种装置能够方便、迅速、较准确地得到含水率的变化情况，能够满足雾雨入渗滑坡模型试验，但渗透关系、温度的影响没有考虑进去，还需要以后进一步的改进。

关键词: 含水率, 传感器, 电阻率, 土壤, 装置

Abstract:

The electrical conductivity of soil is controlled by the moisture content. With the voltage on both ends of the protective resistor in the circuit board as the signal to reflect the changes of moisture content, we designed a sensor for the moisture content. The sensors were calibrated in sand and sandy soil to obtain the linear variation relation between moisture content and voltage. The device is applied to the model of landslide induced by fog and rain infiltration to test the changes of moisture content. Results show that through this device we can get the moisture content variation conveniently, quickly and more accurately. It can meet the requirements of the landslide model test, but the infiltration relation and the influence of temperature were not taken into consideration. Further research and improvements are needed.

Key words: moisture content, sensor, electric resistivity, soil, device

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