Detection method capable of accurately detecting internal texture of trees

A detection method and technology of trees, applied in the direction of measuring device, radio wave measurement system, radio wave reflection/re-radiation, etc., can solve the problems of distribution changes of physical properties, mechanical and mechanical properties, affecting the electrical properties of woody bodies, etc., and achieve easy implementation , The effect of the scientific detection method

Inactive Publication Date: 2019-11-19
朱江
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  • Application Information

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Problems solved by technology

Most of the living trees in the early stage of encroachment cannot use non-destructive detection methods to accurately observe the internal physical structure from the outside, but changes in the internal physical structure of trees will affect the distribution of electrical, physical and mechanical properties of woody bodies Variety

Method used

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Embodiment

[0018] The detection method of the present invention that can accurately detect the internal texture of trees includes the preprocessing of radar wave data, the layer analysis method, and the comparison with different tree species databases. It specifically includes the following steps:

[0019] 1) Initialize and preprocess the acquired radar echo data;

[0020] 2) For the preprocessed radar wave signal, the feature layered identification and positioning technology is used to obtain the time delay information of the abnormality inside the tree, and then determine the propagation time of the radar wave in the medium layer;

[0021] 3) Estimate the dielectric constant of each layer by layer-by-layer inversion method, and then obtain the radar wave transmission velocity in the current medium, and determine the thickness of the layer according to the echo delay and propagation time obtained in step 2);

[0022] 4) Compare the calculated abnormal layer thickness information in the ...

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Abstract

The invention discloses a detection method capable of accurately detecting internal texture of trees, and the method comprises preprocessing of radar wave data, a layer analysis method and comparisonwith different tree species databases, and specifically comprises the following steps of initializing and preprocessing the acquired radar wave echo data; acquiring time delay information of internalanomaly of the trees by using the feature layered recognition and localization technology according to the preprocessed radar wave signal to determine the time of propagation of the radar wave in a medium layer; and comparing the calculated information of the internal abnormal layer thickness of the trees with the databases of different trees to improve the detection accuracy. The detection methodprovided by the invention is scientific and easy to implement. Based on the amplitude and time delay of the reflected waves in different medias and abnormal interfaces of the trees by using the method, the internal texture of trees can be accurately detected to further display visual images of the internal defects of the trees.

Description

technical field [0001] The invention relates to the technical field of quality detection, in particular to a detection method capable of accurately detecting the internal texture of trees. Background technique [0002] Trees growing in the natural environment are vulnerable to environmental deterioration and external infringement, which will affect the health and stability of trees, destroy the ecological environment, and untimely remedial and preventive measures will easily cause economic losses; internal defects, plant diseases and insect pests in forest areas and forest farms affect the growth quality; urban greening Trees are damaged and broken and toppled in bad weather, endangering people's property and life safety; ancient and famous trees are damaged by fungi and insects, causing irreparable losses to national cultural heritage. The damage to trees is mainly manifested as cracks, scabs, decay and hollows inside the trees. Most of the living trees in the early stage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00G01S13/88
CPCG01N23/00G01S13/88
Inventor 朱江
Owner 朱江
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