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Pin grid type indoor artificial rainfall test system and method

A test system and network technology, which is applied in the field of soil quality research, can solve the problem that the rainfall intensity cannot be adjusted in real time, and achieve the effects of ensuring rainfall uniformity, easy installation and convenient operation.

Inactive Publication Date: 2019-10-01
SOUTHWEST JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a needle net type indoor artificial rainfall test system and method to solve the problem that the rainfall intensity of the existing artificial rainfall experiment system cannot be adjusted in real time

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  • Pin grid type indoor artificial rainfall test system and method
  • Pin grid type indoor artificial rainfall test system and method

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Embodiment Construction

[0054] The following describes the specific embodiments of the present invention to facilitate those skilled in the art to understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments, for those of ordinary skill in the art, as long as various changes These changes are obvious within the spirit and scope of the present invention defined and determined by the appended claims, and all inventions and creations using the concept of the present invention are protected.

[0055] An embodiment of the present invention will be described in detail below with reference to the drawings.

[0056] Such as figure 1 As shown, a needle-net indoor artificial rainfall test system includes a soil sample chamber module, a simulated rainfall module and a control module;

[0057] The soil sample chamber module is used to load test soil samples, provide sensor layout channels, and collect runoff generated on the surface of the s...

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Abstract

The invention discloses a pin grid type indoor artificial rainfall test system comprising a soil sample room module, a simulated rainfall module and a control module, wherein the simulated rainfall module is connected to the soil sample room module and the control module, respectively. A method of using the artificial rainfall test system comprises the following steps of calibrating the relationship between the flow rate q at the output end of a peristaltic pump and the PLC output pulse frequency f, carrying out soil sample filling of the artificial rainfall test system, giving a rain intensity-time function R(t) and a rainfall duration D, dividing the rainfall duration D into n segments according to the adjustment precision, and calculating the PLC pulse frequency f corresponding to eachsegment of the rainfall duration. According to the PLC pulse frequency f, the artificial rainfall experiment is carried out by the PLC programmable controller and the stepper motor driver. The pin grid type indoor artificial rainfall test system provided by the invention realizes the artificial rainfall test with high output precision, programmable control, convenient operation and reliable performance.

Description

Technical field [0001] The invention belongs to the field of soil quality research, and specifically relates to a needle-net type indoor artificial rainfall test system and method. Background technique [0002] The law of water movement and solute migration in the soil caused by rainfall has always been a hot issue in the fields of agriculture, forestry, soil and water conservation, and geotechnical engineering. Outdoor in-situ tests are usually time-consuming, laborious and economical. Therefore, indoor artificial rainfall simulation tests are usually carried out. Come to research. One-dimensional test is a basic kind of indoor test. During the test, rainfall is simulated on the upper part of the cylindrical soil column, and sensors are embedded inside the soil column to monitor the response of various parameters inside the soil sample. [0003] At present, there are two methods for artificial rainfall simulation in the laboratory: [0004] (1) Maintain a constant water head above...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 张建经胡君龙闫世杰牛家永
Owner SOUTHWEST JIAOTONG UNIV
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