机电工程技术2023，Vol.52Issue(12)：1-4,4.DOI:10.3969/j.issn.1009-9492.2023.12.001
一种石墨胶凝式水分传感器探头的电阻率试验研究
Experimental Study on Resistivity of a Graphite Gelled Moisture Sensor Probe
摘要
Abstract
Accurate detection of soil moisture is the key to realize intelligent irrigation.The resistivity of probe material is related to the detection accuracy of moisture sensor.Therefore,an experimental study on the resistivity of a graphite gelling-type moisture sensor probe is carried out to analyze the change of resistivity of different graphite content under wet and dry conditions to obtain the optimal ratio of graphite content probe.The results show that the resistivity of the graphite cementitious composite probe is related to its cement base and graphite ratio,with the increase of graphite mass fraction,the resistance both first gradually decreases,and then becomes stable after 15%graphite mass fraction;the resistivity of the probe material is negatively correlated with the applied test voltage,the higher the test voltage is,the lower its value is,and the more prominent it is when the graphite mass fraction is low;it is feasible to detect the resistivity of the graphite composite gelled probe material by the apparent resistivity method of the two electrode method.关键词
石墨/胶凝复合材料/探头/水分传感器/电阻率Key words
graphite/cementitious composite material/probe/moisture sensor/resistivity分类
信息技术与安全科学引用本文复制引用
谢碧洪,刘晓初,姚莉,徐乔,黄良杰,肖汉涛..一种石墨胶凝式水分传感器探头的电阻率试验研究[J].机电工程技术,2023,52(12):1-4,4.基金项目
广东省科技专项资金("大专项+任务清单")项目(2022020434) （"大专项+任务清单"）
广东省高等职业院校教学改革研究与实践项目(GDJD-JZW202116) （GDJD-JZW202116）
罗定职业技术学院校内创新创业计划项目(CXCY202205) （CXCY202205）
