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Method for detecting large holes damaged by worms in tree with acoustic surface wave

A surface acoustic wave and hole technology, which is applied to the analysis of solids using sonic/ultrasonic/infrasonic waves, can solve the problem of not being able to determine moth-eaten holes, etc., and achieve stable detection results, small errors and good safety.

Inactive Publication Date: 2013-12-11
ZHEJIANG GONGSHANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to overcome the deficiency that the detection method in the prior art cannot be used to determine the position of the moth-eaten hole, and provides a method for detecting moth-eaten holes in trees by surface acoustic waves capable of determining the position and size of the moth-eaten holes

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  • Method for detecting large holes damaged by worms in tree with acoustic surface wave
  • Method for detecting large holes damaged by worms in tree with acoustic surface wave
  • Method for detecting large holes damaged by worms in tree with acoustic surface wave

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] Such as figure 1 Shown embodiment is a kind of method that surface acoustic wave detects moth hole in tree, comprises the steps:

[0041] Step 100, setting the diameter of the hole in the computer and the trunk diameter at the location of the hole ratio between The corresponding five hole types are disease-free trees with a hole diameter of 0, slightly diseased trees, of low diseased trees, of moderately diseased trees, of severely diseased trees;

[0042] And set the absolute value A of the 5 standard SNR differences corresponding to the hole type i , i=1,...,5;A 1 =70.53dB,A 2 =68.83dB,A 3 =65.71dB,A 4 =63.47dB;A 5 =61.59dB. Set error threshold d=0.2;

[0043] Step 200, using a surface acoustic wave detection device to detect trees 1:

[0044] Such as figure 2 As shown, the surface acoustic wave detection device ...

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Abstract

The invention discloses a method for detecting large holes damaged by worms in a tree with acoustic surface wave. With the method, a tree trunk or tree branches is / are detected by using an acoustic surface wave detection device so as to determine whether large holes exist in the tree trunk or the tree branches at detected positions and determine the types of the large holes. The integral damage condition of plant diseases and insect pests of the tree is obtained through scanning type detection of a stainless steel probe of the acoustic surface wave detection device on the tree trunk or the tree branches continuously. The method has the characteristics that the pertinence between the variety and amount of insecticides and insect pests is good, the insect pests in the tree can be effectively killed, and the damage of medicine to the tree is reduced, thus the health of the tree is ensured.

Description

technical field [0001] The invention relates to a method for detecting insect damage to trees, in particular to a method for detecting insect-eaten holes in trees using surface acoustic waves capable of determining the position and size of the insect-eaten holes. Background technique [0002] The tree pest control methods mainly include trunk whitening method, pesticide burying method, trunk glue coating method, trunk healing method and drug injection method. [0003] Among them, the injection method is to drill holes around the trunk and inject the medicine, so that the whole tree has the active ingredients of the pesticide, and no matter where the pests eat, they will be poisoned and die. This method is easy to operate, saves labor and medicine, does not pollute the air, does not harm natural enemies, and has a good control effect. [0004] But the common injection method can't obtain the specific position where the pest is located, and needs to inject a larger dose of me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/12
Inventor 惠国华黄洁陈静郑海霞
Owner ZHEJIANG GONGSHANG UNIVERSITY