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基于驻波原理的短探针小麦茎水分传感器
被引:11
作者
:
论文数:
引用数:
h-index:
机构:
刘贺
赵燕东
论文数:
0
引用数:
0
h-index:
0
机构:
北京林业大学工学院
赵燕东
机构
:
[1]
北京林业大学工学院
来源
:
农业工程学报
|
2011年
/ 27卷
/ 11期
关键词
:
传感器;
含水率;
测量;
驻波探头;
小麦茎;
D O I
:
暂无
中图分类号
:
S126 [电子技术、计算机技术在农业上的应用];
S512.1 [小麦];
学科分类号
:
082804 ;
摘要
:
该文以小麦为研究对象,尝试利用驻波率原理,研究一种测量小麦茎含水率的方法。针对小麦茎的特点,设计了具有短探针结构的传感器,波导探头为长21mm,间距8mm,直径0.7mm的平行双针结构。研究了同轴传输线长度对传感器性能的影响,确定其长度为39cm,并验证了基于驻波率原理测量方法的可行性。试验结果表明,该文设计的传感器具有较好的稳定性、线性度及灵敏度。通过与烘干法对比研究,得出了针对小麦茎含水率的标定公式,测量误差最大不超过±3%,平均偏差为1.126%,标准偏差为1.299%。
引用
收藏
页码:140 / 144
页数:5
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共 13 条
[11]
Laboratory evaluation of dual-frequency multisensor capacitance probes to monitor soil water and salinity
[J].
Starr, J. L.
论文数:
0
引用数:
0
h-index:
0
机构:
ARS, USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA
ARS, USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA
Starr, J. L.
;
Timlin, D. J.
论文数:
0
引用数:
0
h-index:
0
机构:
ARS, USDA, Crop Syst & Global Change Lab, Beltsville, MD 20705 USA
ARS, USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA
Timlin, D. J.
;
Downey, P. M.
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0
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0
h-index:
0
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ARS, USDA, Environm Management & Byprod Utilizat Lab, Beltsville, MD 20705 USA
ARS, USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA
Downey, P. M.
;
McCann, I. R.
论文数:
0
引用数:
0
h-index:
0
机构:
Univ Delaware, REC, Dept Bioresource Engn, Georgetown, DE 19947 USA
ARS, USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA
McCann, I. R.
.
IRRIGATION SCIENCE,
2009,
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M. A. Mojid
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0
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机构:
Dept. of Irrigation/Water Management, Bangladesh Agricultural University
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Geotechnical & Geological Engineering,
2003,
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[13]
Non-destructive measurement of stem watercontent by time domain reflectometry using short probes .2 Irvine J,Grace J. ExpBotany . 1997
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2
→