| 基于频域法传感器的基质含水率检测性能研究 |
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| 引用本文： | 穆永航,李莉,王俊衡,王海华,付强,SIGRIMIS N.基于频域法传感器的基质含水率检测性能研究[J].农业机械学报,2017,48(S1):341-346. |
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| 作者姓名： | 穆永航 李莉 王俊衡 王海华 付强 SIGRIMIS N |
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| 作者单位： | 中国农业大学,中国农业大学,中国农业大学,中国农业大学,中国农业大学,雅典农业大学 |
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| 基金项目： | 国家重点研发计划项目（2016YFD0201000-2016YFD0201003）和云南省汪懋华院士工作站（2015IC016） |
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| 摘 要： | 本文对基于频域法FDS-100型土壤含水率传感器在基质含水率中的检测性能进行了研究。首先，对不同配比的基质，使用FDS-100型传感器测量并将测量结果与干燥法得到的标准含水率进行对比，将FDS-100型传感器与ECH2O-5TE型基质含水率传感器在混合基质中的测量性能进行对比，并研究了压实程度、电导率和温度对传感器性能的影响。试验结果表明：FDS-100型传感器在不同配比基质中得到的测量值并不遵循同一曲线；测量值随压实程度增大而增大，测量误差在-1%~10%之间；电导率对测量值有一定影响，测量误差在±5%之间；温度对FDS-100型传感器测量值影响极小，测量误差在2%以下；FDS-100型传感器与ECH2O-5TE型传感器之间的相对误差为4.32%。FDS-100型传感器可用于基质含水率检测，但在实际使用时需要针对不同基质与不同压实程度进行标定。
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| 关 键 词： | 基质 含水率检测 频域法传感器 性能评估 |
| 收稿时间： | 2017/7/10 0:00:00 |
Performance Evaluation of Substrate Moisture Detection Based on Frequency Domain Sensor |
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| MU Yonghang,LI Li,WANG Junheng,WANG Haihu,FU Qiang and SIGRIMIS N.Performance Evaluation of Substrate Moisture Detection Based on Frequency Domain Sensor[J].Transactions of the Chinese Society of Agricultural Machinery,2017,48(S1):341-346. |
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| Authors: | MU Yonghang LI Li WANG Junheng WANG Haihu FU Qiang and SIGRIMIS N |
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| Institution: | China Agricultural University,China Agricultural University,China Agricultural University,China Agricultural University,China Agricultural University and Agricultural University of Athens |
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| Abstract: | Closed soilless substrate cultivation is the direction of modern agricultural transformation, substrate water content is an important detection indicator of the cultivation process, but the study of the soil moisture sensor used for detecting water content of substrate is rear. To solve this problem, this paper evaluated the performance of a frequency domain soil moisture sensor FDS-100 in the substrate water content detection comprehensively. For different proportions of the substrate, compared and analyzed the standard water content obtained from the drying method and FDS-100 measurement. Besides, it also compared the measure performance of FDS-100 and ECH2O-5TE in a mixed substrate. The influence of compaction degree, EC value and temperature value on sensor is also tested. The results shows that measured values from FDS-100 measurement in different proportions substrate did not follow the same curve;the degree of compaction impacted the FDS-100 measurement, measured value increased with the degree of compaction, the measurement error is between -1% and 10%;EC had a certain influence on FDS-100 measurement, measurement error is between ±5%;temperature had less effect on the measurement of FDS-100, the measurement error is below 2%;the relative error between FDS-100 and ECH2O-5TE is 4.32%. In summary, FDS-100 can be used in substrate moisture detection, it should be calibrated for different substrates and different degrees of compaction in actual use. |
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| Keywords: | substrate moisture content detection frequency domain sensor performance evaluation |
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