Field portable experiment system for tensile mechanical property of plant root system

Abstract

The invention relates to a field portable experiment system for tensile mechanical property of a plant root system, which consists of a machine, a testing system, a notebook computer and a test recording software, wherein the machine comprises a fixing stand, a vertical guiding traction mechanism and a root system clamping system; the testing system comprises a left infrared distance measuring sensor, a right infrared distance measuring sensor, a tensile sensor, a tensile transducer, a data acquisition card and a sensor power module; the plant root system can be clamped by an upper clamping mechanism and a lower clamping mechanism of the root system clamping mechanism; when the upper clamping mechanism is lifted, the tensile force and deformation born by the root system is measured out by the testing system and transmitted to the portable notebook computer; a signal is analyzed through the test recording software; and the record is stored. The parts of the machine of the system can be detached into various parts or single piece, are convenient to carry, reduce spatial dimension, can be conveniently transported to a field needing to test the tensile mechanical property of the root system and test the tensile strength, deformation, strain and tensile elasticity modulus of the plant root system.

Description

technical field [0001] The invention relates to an experimental system for testing the tensile mechanical properties of plant roots by using electronic testing technology, in particular to a portable experimental system capable of testing the tensile mechanical properties of plant roots in the field, which belongs to electronic testing technology field. Background technique [0002] Soil erosion in plateaus and mountainous areas, surface water and soil loss, landslides, mud-rock flows and other disasters are relatively serious geological disasters in nature. At present, the mechanism of soil stabilization by plant roots has been deeply studied at home and abroad. Using vegetation to protect and stabilize slopes has become an important means of implementing ecological slope protection projects. Among them, plant roots are an important factor to improve the soil erosion environment. Stabilizing soil structure, improving soil impact resistance, and preventing soil erosion ofte...

AI Technical Summary

Problems solved by technology

However, so far, due to the lack of special equipment for testing the tensile mechanical properties of plant roots, most of the human testing of the tensile mechanical properties of plant roots uses simple tools such as hand pliers or engineering pliers to clamp the two sides of the root system. At the end, the tester applies tension to break the root system through a hand-held tension meter, and manually observes and records the maximum tension at the moment of breaking.

On the one hand, the testing process requires multiple people to operate, which is time-consuming and labor-intensive, and there are large errors in manual observation and recording of the maximum pulling force, the measurement results are not accurate, and the corresponding relationship between the pulling force and the deformation of the plant root system cannot be recorded; Lack of a reliable force adding device, the pulling force directly applied by human hands is limited and unstable, it is difficult to ensure that the pulling force is loaded slowly and evenly along the root axis, and may also generate torsional force, which is not conducive to truly and objectively reflecting the axial resistance of plant roots. The actual situation of stretching cannot guarantee the accuracy of the test results, nor can it meet the needs of a large number of root system tests

If you want to use the existing tensile testing equipment for other materials, such as tensile equipment for steel parts, since these equipment are large-scale special equipment and cannot be moved to the field site, it is difficult to carry out the tensile test of plant roots in the field site For testing, the root system of the plant needs to be collected and brought back to the laboratory for testing. The value of this test is greatly reduced due to the fact that it is separated from the actual environment in which the plant grows.

On the one hand, the collected root samples are limited and not abundant in the field, and the plant roots brought back to the laboratory from a remote field site, due to the long unearthed time, it is easy to cause the root system to lose water and dry out, and the tensile mechanical properties of the plant will change. , the test results can not reflect the real situation in the soil; on the other hand, these large-scale special experimental equipment does not have a clamping device for the root system, which is easy to damage the root and reduce the success rate of the experiment

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