摘要
为探究在灌溉控制系统中灌水水质对土壤水分传感器性能的影响效应,选择了3种国内外常用的基于介电原理(FDR)的土壤水分传感器(5TE、CSF13、FDS100)对其精准性、一致性等关键性能进行评价分析,结果表明:在测量精度方面,5TE和FDS100传感器精度较好,土壤含水量测试值与实际值的R^(2)达到0.892与0.914;在一致性方面5TE和CSF13传感器读数更为稳定,其变异系数C_(v)分别为0.031与0.026,而FDS100传感器的读数则波动较大,变异系数C_(v)达到0.051;典型灌水水质会对3种传感器的性能产生影响,3种传感器的测量值均与灌溉水盐度呈正相关,5TE、CSF13、FDS100传感器测量土壤含水量的敏感度分别为0.52%、1.51%、1.18%;当采用再生水进行灌水时,5TE传感器在高含水量时(高于0.15 cm^(3)/cm^(3))测量误差增大,CSF13和FDS100传感器受再生水的影响不显著,研究结果可对不同水源灌溉条件下土壤水分传感器的选型提供依据。
In order to explore the effect of irrigation water quality on sensor performance in the irrigation control system,this paper selected three commonly used soil moisture sensors(5TE,CSF13,FDS100)based on dielectric principles at home and abroad for their key performance such as accuracy and consistency.The evaluation and analysis show that:in terms of measurement accuracy,the 5TE and FDS100 sensors have better accuracy,and the R^(2) between the tested and actual values of soil moisture content reaches 0.892 and 0.914;in terms of consistency,the readings of the 5TE and CSF13 sensors are more stable and their variation coefficients C_(v) are 0.031 and 0.026 respectively,while the readings of the FDS100 sensor fluctuate greatly,and the variation coefficients C_(v) reaches 0.051;the typical irrigation water quality will affect the performance of the three sensors,and the measured values of the three sensors are all positive correlated with the salinity of the irrigation water.The sensitivity of 5TE,CSF13,and FDS100 sensors for measuring soil moisture content are 0.52%,1.51%,and 1.18%,respectively.When reclaimed water is used for irrigation,the measurement error of 5TE sensor increases at high water content(higher than 0.15 cm^(3)/cm^(3)),while CSF13 and FDS100 sensors are not significantly affected by reclaimed water.The results can provide a basis for the selection of soil moisture sensors under different water source irrigation conditions.
作者
郑文刚
罗晨云竹
杨凤茹
董静
姚丽
张钟莉莉
ZHENG Wen-gang;LUO Chen-yun-zhu;YANG Feng-ru;DONG Jing;YAO Li;ZHANG Zhong-li-li(School of Mathematics and Physics,China University of Geosciences(Beijing),Beijing 100084,China;Intelligent Equipment Technology Research Center,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China;Information Technology Research Center,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China;Agricultural Information Software and Hardware Product Quality of the Ministry of Agriculture Key Laboratory of Testing Beijing 100097,China)
出处
《节水灌溉》
北大核心
2022年第2期82-88,共7页
Water Saving Irrigation
基金
河北重点研发计划项目(21327410D)
北京市农林科学院创新能力建设项目(KJCX20210411)
现代农业产业技术体系专项资金资助(CARS20)
农业农村部重点实验室开发课题(KFZN2020W002)。
关键词
土壤水分传感器
性能测试
灌溉水质
自来水
再生水
微咸水
soil moisture sensor
performance test
water quality
groundwater
reclaimed water
brackish water
