Method and device for measuring soil penetration characteristic based on instantaneous acceleration detection

Abstract

The invention discloses a method and a device for measuring a soil penetration characteristic based on instantaneous acceleration detection, specifically a method and a device for measuring soil penetration resistance and then obtaining soil physical properties. The device mainly comprises an acceleration detection device, a handle, a guide rod, impact weights, an adapter sleeve, a penetrating rod, a guide support and the like. The penetrating rod penetrates into soil, the acceleration detection device is used for detecting acceleration change in the descending process of the whole device, and after the whole operation process is finished, data can be read in a computer for further analysis processing. The initial velocities when the penetrating rod penetrates into the soil are different by changing parameters in the descending process, so that the velocities of a conical head reaching the same depth are different, and then the relation between mathematical model discussion velocity and penetration resistance can be established, a series of characteristic parameters of soil are researched, and the device has significance for guiding agricultural production. Speed-changing penetration, automatic recording and data storage are realized, and the device is high in measuring precision and high in work efficiency.

Description

technical field [0001] The invention relates to a measuring method and a device for measuring soil mechanical physical properties, in particular to a measuring method and a device for measuring the resistance of a cone head of a soil resistance meter. Background technique [0002] In agricultural production, soil compaction is not only closely related to crop yield, seed germination soil breaking rate and plant root development, but also directly affects soil moisture transfer. The volumetric mass of soil increases, and the soil ventilation pores decrease, which leads to aggravated soil erosion, increased soil resistance, and hindered root growth of crops, which in turn leads to reduced crop yield and degradation of farmland quality. In industrial production, such as water conservancy projects, construction and road bridges, we need a more compact soil to make the working foundation more stable and enhance the overall structural stability after construction. Cone index is a...

AI Technical Summary

Problems solved by technology

[0003] The traditional static penetration measurement device uses manual pressure penetration and manual recording. The device is very complicated and needs to be penetrated at a constant speed, resulting in a relatively low degree of automation, and it is difficult to control the speed constantly, and it is easy to produce speed errors during penetration, thus lead to low measurement accuracy

The cumbersome device leads to low automation, low labor intensity, and low work efficiency, and can only measure the penetration resistance, and the function is relatively single

However, the traditional dynamic penetrating probe method has lower measurement accuracy and larger error range, and cannot even measure the specific force.

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