原状土入渗性能自动检测装置设计

Development of Automatic Detecting Device for Undisturbed Soil Infiltration Rates

为解决双环入渗仪只能测定原状土的渗透速度,而无法测定原状土入渗湿润锋的运移规律和入渗过程中不同高度的土壤水分含量等问题,提出了一种基于频域反射法土壤水分传感器测量原状土入渗湿润锋运移规律和不同高度土壤水分含量的方法,采用arduino mega 2560单片机开发板采集土壤水分传感器检测得到的数值,设计了圆盘式底座的原状土入渗性能检测装置,土壤水分传感器安装在检测装置上,arduino mega 2560单片机开发板能够根据检测得到的数据判定原状土入渗湿润锋的运移的位置,并根据控制策略驱动检测装置,使土壤水分传感器进入下一位置进行检测,也能够对原状土入渗过程中不同位置的土壤水分含量进行连续检测。为研究原状土的入渗过程中湿润锋的运移规律和水分迁移提供参考。

To solve the bicyclic infiltrometer only measured undisturbed soil infiltration rate ,can not be measured undisturbed soil in‐filtration of different heights soil moisture migration law issues such as wetting front and infiltration process ,it is presented based on frequency domain reflectometry law soil moisture sensor measures the undisturbed soil infiltration wetting front transport rules and different levels of soil moisture content ,the method using arduino mega 2560 microcontroller development board collecting soil mois‐ture sensor values obtained ,designed undisturbed soil infiltration disc base performance Test device ,soil moisture sensor is mounted on the detection device ,arduino mega 2560 microcontroller development board can be determined undisturbed soil infiltration wetting front migration based on the position data obtained by the detection ,control and policy-driven detection apparatus according to the soil moisture sensor go to the next position is detected ,it is possible for the soil moisture content at different locations undisturbed soil infiltration during continuous testing .Provide a reference for the study of undisturbed soil infiltration process of migration law and moisture migration wetting front .