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Method and device for measuring asymmetric diameter at breast height of tree

A technology of measuring device and measuring method, applied in the direction of measuring device, mechanical diameter measurement, using optical device, etc., can solve the problems of restricting forest resources survey work, inaccuracy, poor anti-interference, etc., and achieves reduction of manual manual recording steps, Improve work efficiency and ensure accuracy

Pending Publication Date: 2020-09-25
ZHEJIANG FORESTRY UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional measurement tools are mainly calipers, diameter measuring gages, etc., which have single functions, outdated methods, manual reading, not accurate enough, error-prone recorded data, and difficult to store data in time, etc., which seriously restrict forest resources investigation.
Moreover, for large trees with a DBH greater than 50 cm, the measurer may need the assistance of others to complete the measurement, which is time-consuming and labor-intensive.
In recent years, many emerging products have emerged, such as laser scanners, total stations, electronic barcode rulers, etc., to solve this problem, but the above products have complex operation, inconvenient carrying in the field, poor anti-interference, high equipment cost, Many problems such as low measurement efficiency have not been widely used
[0003] And the measurement method of standing tree diameter at breast height is mainly to calculate the corresponding diameter of the standing tree by approximating a cylinder. However, in practice, many trees are asymmetrical. If the calculation of tree diameter at breast height is carried out completely according to the cylinder, the error is large and the calculation is not accurate. accurate

Method used

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  • Method and device for measuring asymmetric diameter at breast height of tree
  • Method and device for measuring asymmetric diameter at breast height of tree
  • Method and device for measuring asymmetric diameter at breast height of tree

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The present embodiment provides a kind of measuring device of tree asymmetric diameter at breast height, such as Figure 1 to Figure 6 As shown, the measurement device for the asymmetric DBH of this tree includes:

[0039] The first ruler bar 101, the second ruler bar 102 and the operation box 104, the end of the first ruler bar is movably connected with the end of the second ruler bar to form a V-shaped structure with adjustable opening angle, and the trees are clamped In the V-shaped structure, it is characterized in that a first angle measuring mechanism and a second angle measuring mechanism are arranged in the operation box, the first end of the first ruler is bent to form a first protrusion, the The first end of the second ruler is bent to form a second protrusion, the first protrusion includes a first working end surface, the second protrusion includes a second working end surface, and the first working end surface is provided with a first The sensing unit is pr...

Embodiment 2

[0062] The example of this matter provides a kind of measurement method of tree asymmetrical diameter at breast height, including step S1: whether the V-shaped structure of judging measuring device is preset open horizontal state;

[0063] S2: If the V-shaped structure of the measuring device is in the preset open horizontal state, start the measurement;

[0064] S3: judge whether the first protruding first working end face of the first chi bar of the measuring device is tangent to the tree; judge whether the second protruding second working end face of the second chi bar of the measuring device is tangent to the tree;

[0065] S4: If the first raised first working end surface of the first ruler is tangent to the tree and the second raised second working end surface of the second ruler is tangent to the tree, then the first angle sensor is used to obtain the first The angle α1 of the rotation of the ruler bar and the angle α 2 of the rotation of the second ruler bar obtained b...

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Abstract

The invention provides a device for measuring the asymmetric diameter at breast height of a tree, and belongs to the technical field of tree measuring equipment. The problem of how to improve the measurement precision of the asymmetric tree breast height diameter is solved. The device comprises: a first ruler strip and a second ruler strip moveably connected with a tail end, and an operation box.A first angle measuring mechanism and a second angle measuring mechanism are arranged in the operation box, the head end of the first ruler strip is bent to form a first protrusion, the head end of the second ruler strip is bent to form a second protrusion, the first protrusion comprises a first working end face, and the second protrusion comprises a second working end face. By adopting the device, the asymmetric diameter at breast height of the tree can be measured more accurately.

Description

technical field [0001] The invention belongs to the technical field of tree measuring equipment, in particular to a method and device for measuring the asymmetric diameter at breast height of trees. Background technique [0002] Standing tree diameter at breast height is an important indicator of standing tree growth, and it is of great significance in forest resources investigation. Simple, fast and accurate measurement and storage can not only reveal the growth law of standing trees, but also contribute to ecological research. However, the traditional measurement tools are mainly calipers, diameter measuring gages, etc., which have single functions and backward methods. Manual reading is not accurate enough, and the recorded data is prone to errors, and it is difficult to store the data in time, etc., which seriously restricts the forest resource investigation. And for the big tree with diameter at breast height greater than 50cm, the measurer may need the assistance of o...

Claims

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Application Information

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IPC IPC(8): G01B5/08G01B11/14
CPCG01B5/08G01B11/14
Inventor 袁方星方陆明孙林豪郑似青楼雄伟杨来邦
Owner ZHEJIANG FORESTRY UNIVERSITY
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