基于原状土柱土壤水分传感器率定方法的研究

土壤水分传感器在现场安装后,需要针对现场土壤状况对其进行率定,以便校准率定关系。在工程实践中,土壤水分传感器现场率定是一项步骤繁杂、操作要求高、现场取土难度大、耗时较长的一项工作,严重困扰工程项目的实施。开展基于原状土柱率定土壤水分传感器研究,通过现场采集原状土柱,在实验室浸泡至饱和后取出,让土壤水分自然散失,用称重法定期称量原状土柱重量,同时记录土壤水分传感器原始测量值,以此来研究土壤水分传感器的工程率定问题,探讨提高现场安装的土壤水分传感器率定效率的方法,具有现实意义。

Soil Moisture Sensor Calibration Method Based on Undisturbed Soil Column

After the soil moisture sensor being installed, it is neccesary to make calibration on the soil conditions in the field for verifying the rating relation. In practice, field calibration of soil moisture sensor is a complicated step, during which high quality operation is needed, on-site taking soil is difficult, and it involves working long hours. In this study, the undisturbed soil columns were collected in field to send to laboratory, the soil was taken out after saturation, let a natural loss of soil moisture, then regularly weighting was made while the original values from the soil moisture sensor were recorded, so as to study the calibration of the soil moisture sensor, and discuss the ways of improving efficienty of installing soil moisture sensors.