Research and application of a new soil moisture sensor
The measurement of soil moisture is the basis for the refinement of agriculture to implement water-saving irrigation.A new soil moisture sensor was designed based on its theoretical basis and analysis of the dielectric constant characteristics of soil.It mainly consists of probes,electronic circuits and wiring cables.The calibration test of the sensor was conducted under the working voltage of 2.5~5.5V.Using the experimental data to analyze the regression function,it was found that the output voltage of the sensor should have a linear negative correlation with the volumetric moisture content of the soil,and the coefficient of determination R2>0.986.The accuracy of the sensor was verified by soil samples with different moisture content.The average absolute value of absolute errors is less than 2.5%.The results show that the sensor has stable and reliable working performance,high measurement accuracy and good linearity,and is suitable for moisture measurement in most types of soil.
Xingchao Zhang Chengzhi Yang Lu Wang
Faculty of Electrical and Information Engineering,Oxbridge College,Kunming University of Science and Technology,Kunming 650106,China
国际会议
广州
英文
1-3
2018-05-11（万方平台首次上网日期，不代表论文的发表时间）