Multi-configuration detection device for soil conductivity detection based on current-voltage four-terminal method

Abstract

The invention discloses a multi-configuration detection device for detecting soil conductivity based on the current-voltage four-terminal method. The following sequence is arranged at intervals in a single row: the first detection electrode, the second detection electrode, the first excitation electrode, the third detection electrode, the fourth detection electrode, the second excitation electrode, the fifth detection electrode and the sixth detection electrode; the first excitation electrode The electrode is located at the center position between the second detection electrode and the third detection electrode, and the second excitation electrode is located at the center position between the fourth detection electrode and the fifth detection electrode; the distance between adjacent detection electrodes is equal; The pairwise combination of signal detection electrodes constitutes a multi-configuration detection device. The invention can simultaneously detect the electrical conductivity of multi-region and multi-layer soil, has a large detection region, and can effectively improve detection efficiency and detection precision.

Description

technical field [0001] The invention relates to the field of soil conductivity detection, in particular to a multi-configuration detection device for detecting soil conductivity based on a current-voltage four-terminal method. Background technique [0002] Soil conductivity can reflect the parameters of salinity, moisture, organic matter content, available nutrients, soil texture structure and porosity in soil to varying degrees, and is an indispensable and important parameter for studying soil. Especially in soil salinization assessment, soil improvement and precision agriculture, the detection of soil electrical conductivity is a must. There are two types of detection methods for soil conductivity: non-contact and contact. The non-contact method is represented by the electromagnetic induction earth conductivity meter (EM series) produced by Canada's Geonics limited company, which can measure without contacting the soil, and has the advantages of fast measurement, high eff...

AI Technical Summary

Problems solved by technology

However, like the series of soil conductivity measuring instruments produced by Veris technologies in the United States, only two pairs of measuring electrodes are set in this technical solution, one pair is used for shallow soil conductivity measurement, and the other pair is used for deep soil conductivity measurement , the soil range of its measurement is limited, which cannot meet the needs of supporting the use of large-scale agricultural machinery (such as the agricultural machinery produced by John Deere Company of the United States with a working width of 15m); in addition, the invention adopts a column electrode design, which requires Turning the soil, its use is limited

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