| 基于TDR-3的土壤水分传感器标定模型研究 |
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| 引用本文： | 卢启福,陈联诚,薛月菊,李晴,陈强. 基于TDR-3的土壤水分传感器标定模型研究[J]. 传感技术学报, 2009, 22(7) |
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| 作者姓名： | 卢启福 陈联诚 薛月菊 李晴 陈强 |
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| 作者单位： | 华南农业大学工程学院,广州,510642;华南农业大学信息学院,广州,510642 |
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| 基金项目： | 国家自然科学基金，广东省自然科学基金，广东省科技攻关项目，国家科技攻关项目，国家星火计划 |
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| 摘 要： | 无线传感器网络为土壤水分实时采集提供了经济、方便的途径,对分析土壤含水量时空变异和作物生长气候变化意义重大.将无线传感器网络与TDR-3土壤水分传感器结合实现土壤水分实时监测.为了克服TDR-3土壤水分传感器的非线性缺陷,提出利用最小二乘法对土壤水分曲线进行分段线性标定的方法,并采用相关性系数进行精度验证.实验结果表明,分段线性法所建立模型的精确度较高,而且标定模型简单实用、可行.通过标定模型的研究,使得土壤水分的无线传感器网络能够较精确地进行土壤水分的实时监测.
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| 关 键 词： | 土壤水分传感器 模型标定 最小二乘法 无线传感器网络 相关性系数 |
Calibration model of a TDR-based probe for monitoring soil water content |
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| LU Qifu,WU Muchuna,HU Yueming,XUE Yueju,CHEN Liancheng,LI Qing. Calibration model of a TDR-based probe for monitoring soil water content[J]. Journal of Transduction Technology, 2009, 22(7) |
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| Authors: | LU Qifu WU Muchuna HU Yueming XUE Yueju CHEN Liancheng LI Qing |
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| Affiliation: | LU Qifu1,WU Muchun1,HU Yueming1,XUE Yueju1,CHEN Liancheng2,LI Qing2 1. College of Engineering,South China Agricultural University,Guangzhou 510642,China,2. College of Information |
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| Abstract: | An economic,convenient way was provided with wireless sensor network for real-time collection of soil moisture and it is significant for the analysis of temporal and spatial variation of soil moisture and climate change effects on crop growth.The soil moisture sensors of TDR-3 combined with wireless sensor networks achieved real-time data monitoring of soil moisture.This research put forward a method to calibrate the soil moisture curve in piecewise linear line by using least square method and used correlat... |
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| Keywords: | soil water content sensor model standardization least-square method wireless sensor networks correlation coefficient |
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