| 张 颖,行鸿彦,张 旭,周 琦,刘 钧.土壤水分传感器探头的仿真分析[J].电子测量与仪器学报,2021,35(4):55-65 |
| 土壤水分传感器探头的仿真分析 |
| Simulation analysis of soil moisture sensor probe |
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| DOI： |
| 中文关键词: 土壤含水量 电容式传感器 有限元 仿真计算 |
| 英文关键词:soil moisture content capacitive sensor finite element simulation calculation |
| 基金项目:国家重点研发计划(2019YFE0131900)、国家自然科学基金(61671248,41605121)、江苏省重点研发计划项目(BE2018719)、江苏省“信息与通信工程”优势学科计划项目资助 |
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| Author | Institution |
| Zhang Ying | 1. Collaborative Innovation Center for Meteorological Disaster Prediction and Evaluation, Nanjing University of Information
Science and Technology,2. Jiangsu Key Laboratory of Meteorological Detection and Information
Processing, Nanjing University of Information Science and Technology,3. Space New Meteorological
Technology Co. ,Ltd |
| Xing Hongyan | 1. Collaborative Innovation Center for Meteorological Disaster Prediction and Evaluation, Nanjing University of Information
Science and Technology, 2. Jiangsu Key Laboratory of Meteorological Detection and Information
Processing, Nanjing University of Information Science and Technology |
| Zhang Xu | 3. Space New Meteorological
Technology Co. ,Ltd |
| Zhou Qi | 3. Space New Meteorological
Technology Co. ,Ltd |
| Liu Jun | 4. Huayun Sounding(BeiJing) Meterological Technology Co,. Ltd. |
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| 中文摘要: |
| 在分析土壤介电常数的基础上,研究了电容式土壤含水率传感器的测量原理。 利用 ANSYS 软件建立了电容式水分传
感器探头的三维模型,研究了传感器探头结构参数发生变化时,传感器对其的电容值、电场强度分布、含水率探测深度及灵敏度
的影响,确定了探头的最优尺寸参数,设计了一种基于频域反射法的电容式土壤含水率传感器。 仿真实验结果表明,当探头环
状电极半径 28 mm、轴向宽度 28 mm、电极间距 12 mm、电极厚度 1 mm 时,探头的灵敏度、信号测量强度以及探测范围均与对照
产品相比显著提升,为电容式土壤含水率传感器的结构设计提供了理论依据。 |
| 英文摘要: |
| Based on the analysis of soil dielectric constant,the measuring principle of capacitive soil moisture sensor is studied. This
paper uses ANSYS software to establish a three-dimensional model of a capacitive moisture sensor probe, and studies the influence of the
sensor on its capacitance value, electric field intensity distribution, moisture content detection depth and sensitivity when the structural
parameters of the sensor probe change. Optimizing size parameters, a capacitive soil moisture content sensor based on frequency domain
reflection method is designed. The simulation experiment results show that when the probe ring electrode radius is 28 mm, the axial
width is 28 mm, the electrode spacing is 12 mm, and the electrode thickness is 1 mm, the sensitivity, signal measurement strength and
detection range of the probe are significantly improved compared with the control product. It is a capacitive soil The structural design of
the moisture content sensor provides a theoretical basis. |
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