| 土壤水分测量中相位差检测算法的实验与研究 |
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| 引用本文： | 石庆兰,董乔雪,冯磊.土壤水分测量中相位差检测算法的实验与研究[J].农机化研究,2011(9). |
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| 作者姓名： | 石庆兰 董乔雪 冯磊 |
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| 作者单位： | 中国农业大学信息与电气工程学院; |
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| 基金项目： | 国家“863”计划项目(2006AA10Z264) |
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| 摘 要： | TDR时域反射法是近些年发展起来的一种测定土壤含水量的新技术,因其快速、简便、高可靠性、高精度等优点受到越来越多的关注。为此,介绍一种在TDR时域反射法基础上发展起来的基于相位检测法的土壤水分测量技术,即基于相位检测的时域反射测量法(P-TDR)。针对时间差检测过程中的相位多值问题,提出了确定相位差测量值范围的解决算法,以及实际应用时的解决办法。同时,采用相位检测法设计的传感器对土壤水分测量的结果与烘干法的测量结果进行比较,验证了该方法的可靠性。
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| 关 键 词： | 土壤水分测量 烘干法 时域反射法 相位检测 |
Study on Algorithm of the Phase Difference Detection for Soil Moisture Measurement |
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| Shi Qinglan,Dong Qiaoxue,Feng Lei.Study on Algorithm of the Phase Difference Detection for Soil Moisture Measurement[J].Journal of Agricultural Mechanization Research,2011(9). |
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| Authors: | Shi Qinglan Dong Qiaoxue Feng Lei |
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| Institution: | Shi Qinglan,Dong Qiaoxue,Feng Lei(College of Information & Electrical Engineering,China Agricultural University,Beijing 100083,China) |
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| Abstract: | Time Domain Reflectometry(TDR) is a relatively new method for the measurement of soil water content.The main advantages of TDR over other measurement methods are fast,simple,high reliability and superior accuracy.This article introduces the soil moisture measuring principle based on the phase time domain refletrometry(P-TDR) by detecting the time difference between the reflected signal and the reference one.The phase difference detection algorithm is proposed to solve the phase of multi-value problem.A prac... |
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| Keywords: | soil water content oven drying method time-domain reflectometry phase detecting |
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