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Soil erosion measurement system and method

A measurement method and measurement system technology, which is applied in the field of soil measurement system based on time-domain reflectometry technology, can solve the problems of low efficiency and manual operation, and achieve the effects of high precision, small disturbance and convenient multi-point layout

Pending Publication Date: 2022-02-01
XINYANG NORMAL UNIVERSITY
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Problems solved by technology

[0005] This application provides a soil measurement system and method based on time-domain reflectometry to solve the technical problem that the existing soil erosion measurement requires manual operation, resulting in low efficiency

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  • Soil erosion measurement system and method
  • Soil erosion measurement system and method
  • Soil erosion measurement system and method

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Embodiment Construction

[0046] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0047] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such t...

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Abstract

The invention provides a soil measurement system and method based on a time domain reflection technology. The system comprises a data acquisition device, a TDR measurement device, a relay and a probe. By obtaining TDR waveform data, a first time point, a second time point and a third time point are determined in the TDR waveform data, the first time point is the time of reflection at the junction of a probe and a coaxial cable, the second time point is the time of reflection at the junction of air and soil, and the third time point is the time of reflection at the tail end of the probe; the length of the probe in the air is determined according to the time period between the first time point and the second time point; and the soil water content is determined according to the time period between the second time point and the third time point, the length of the probe in the air and the total length of the probe. The soil erosion and the soil water content are synchronously measured through the TDR technology, automatic monitoring can be achieved, the precision is high, the influence of surface vegetation coverage is avoided, disturbance is small, and multi-point arrangement is facilitated.

Description

technical field [0001] The present application relates to the field of soil erosion measurement, in particular to a soil measurement system and method based on time domain reflection technology. Background technique [0002] Soil erosion will result in the reduction of cultivated land, siltation of reservoirs and lakes, etc. Among them, wind erosion will also cause serious air pollution. Soil erosion measurement is to obtain the change of soil layer thickness caused by water, wind, tillage, etc., and provide a data basis for soil erosion investigation and research. [0003] At present, measuring the change of surface elevation by contact is the main measurement method of soil erosion measurement, and the specific method is mainly the erosion needle method. The erosion needle can be made of metal braze or bamboo stick. During the measurement, the erosion needle is partially inserted into the soil, and the rest is exposed to the air. According to a certain time interval, the ...

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Application Information

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IPC IPC(8): G01B15/02G01N22/04
CPCG01B15/02G01N22/04Y02A90/30
Inventor 张中典牛继强刘明华刘亮黄明斌陈飞燕
Owner XINYANG NORMAL UNIVERSITY
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