Device for measuring soil profile parameter

Abstract

The invention relates to a device for measuring soil profile parameters. The device comprises a base and a host machine arranged on the base, wherein the host machine comprises a casing, an upper bracket connected with the inner wall of the casing, a lower bracket connected with the inner wall of the casing, a motor, a ball screw, a slipper block, two plain shafts, a parameter measurement sensor,a conical rod, a cone head, a depth measurement device and a data acquisition and control device, wherein the motor is in driving connection with the ball screw between the upper bracket and the lower bracket; the ball screw is used for allowing rotary motion of the motor to change into axial direction rectilinear motion; the slipper block is arranged on the ball screw; the two plain shafts fixedbetween the upper bracket and the lower bracket respectively drill through via holes on two ends of the slipper block and are parallel with the ball screw to serve as a lead rail; the parameter measurement sensor arranged on the slipper block is used for acquiring soil profile parameter signals; the conical rod and the cone head are connected with the parameter measurement sensor; the depth measurement device is used for measuring the moving depth of the slipper block; and the data acquisition and control device is used for receiving the soil profile parameter signals and control rotating or stopping of the motor according to the moving depth of the slipper block. The device for measuring the soil profile parameters has high running accuracy, can realize continuous synchronous real-time measurement of one or a plurality of parameters.

Description

technical field [0001] The invention relates to the field of agricultural engineering measurement, in particular to a device for measuring soil profile parameters. Background technique [0002] In the past ten years, Topp of the Canadian Land Resources Institute equaled 1996, 2001 and 2003, Vaz and Hopmans of the University of California, Davis in 2001, Hummel of the Missouri Agricultural Engineering Research Institute of the US Department of Agriculture equaled 2004, Japan Scholar KOSUGI et al. in 2004, Koeller of the University of Hohenheim in Germany in 2005, Belgian scholars Mouazen and Ramon in 2006 respectively tried the compound and real-time measurement of soil conic index and moisture content. [0003] Research institutes such as Topp embed a time domain reflectometer (TDR) sensor for measuring water content into a conical index sensor and install it on a measuring device driven by a DC motor. The depth of longitudinal travel takes every 6cm as a process. By control...

AI Technical Summary

Problems solved by technology

However, since the above-mentioned composite measuring instrument adopts a rack-and-pinion transmission structure, the operation accuracy of the equipment is poor, the efficiency is low, and it is accompanied by relatively large noise.

At the same time, when measuring hard soil, the maximum range of the cone index of 500N is difficult to meet the requirements of the required measurement depth

Moreover, the transmission parts of the entire instrument are directly exposed to the air, and it is easy to reduce the service life of the equipment due to dust and other reasons when working in the field for a long time

Images