| 基于FDR技术的土壤水分传感器设计 |
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| 引用本文： | 张宪,姜晶,王劲松.基于FDR技术的土壤水分传感器设计[J].自动化技术与应用,2011,30(11):61-65. |
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| 作者姓名： | 张宪 姜晶 王劲松 |
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| 作者单位： | 中国电子科技集团公司第49研究所,黑龙江哈尔滨,150001 |
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| 摘 要： | 本文以土壤的介电理论为基础,通过测量土壤的介电常数随土壤水分变化的规律得知土壤的体积含水量,并利用土壤水分频域反射法实现土壤水分的测量.此方法可以连续检测土壤含水量的变化,较好的反映土壤水分的变化趋势.本文所设计的土壤水分传感器因具有多个测量分探头,因此可测量较深的土壤.因采用RS485总线通信,使传感器具有实时测量、...
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| 关 键 词： | 频域反射法 土壤含水量 介电常数 归一化频率 |
The Design of the Soil Moisture Sensor Based on FDR |
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| ZHANG Xian,JIANG Jing,WANG Jin-song.The Design of the Soil Moisture Sensor Based on FDR[J].Techniques of Automation and Applications,2011,30(11):61-65. |
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| Authors: | ZHANG Xian JIANG Jing WANG Jin-song |
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| Affiliation: | ZHANG Xian,JIANG Jing,WANG Jin-song(The 49th Research Institute,Chinese Electron Science and Technology Conglomerate,Harbin 150001 China) |
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| Abstract: | This Paper is based on dielectric theory.The volume water contect in soil can be determined thtrough the measurements of dielectric constant,which changes with volume moisture of soil.The soil moisture can be measured by using the Frequency Domain Reflectometry(FDR).This method can detect the change of soil moisture continuously and can better reflect its trends.The designed soil moisture probe sensor has multiple measure points,so it can be measured in deep underground feastures.The sensor has the features... |
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| Keywords: | Frequency Domain Reflectometry water content in soil dielectric constant scaled frequency |
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