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Diameter measurement method based on shear ruler

A technology of diameter measurement and scissors, which is applied in the field of diameter measurement based on scissors, can solve the problems of high requirements for the operating environment of the measurement object, limited range of measurement diameter, inconvenient portability and measurement, etc., so as to facilitate remote data collection, Easy to implement, innovative effects

Active Publication Date: 2018-02-23
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantages are: the sliding foot is in tight contact with the ruler body, it is not easy to slide, it is loose, it is often not parallel to the fixed foot, the measurement is inaccurate, and it is greatly affected by humidity and rainy days, so it is inconvenient to carry (the sliding foot is easy to fall off)
[0010] These two optical products have complex structure, high cost, limited measurement diameter range, high requirements on the operating environment of the measurement object, and inconvenient portability and measurement
It is not suitable for the application and promotion of large-scale forest areas, mountains, and complex and changeable forest environments in the wild

Method used

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  • Diameter measurement method based on shear ruler
  • Diameter measurement method based on shear ruler

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Experimental program
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Effect test

Embodiment 1

[0066] Embodiment 1: as figure 2, a kind of diameter measuring method based on scissors, is characterized in that, realizes diameter measurement by scissors 1, straightedge and protractor 4; The first end of straightedge links to each other with hinge point A of scissors, the second of straightedge The end is used to contact the surface of the measured object (such as the trunk 3); the measured object is cylindrical or cylindrical;

[0067] The measurement steps are as follows:

[0068] Step 1: Open the scissors;

[0069] The opening direction is perpendicular to the axis of the measured object;

[0070] Step 2: Put the second end of the ruler against the surface of the measured object; and clamp the two arms of the opened scissors to the measured object;

[0071] Step 3: Reading;

[0072] The read data includes the angle data measured by the protractor;

[0073] Step 4: Calculate the diameter;

[0074] The diameter Φ of the measured object is calculated based on the le...

Embodiment 2

[0082] Such as Figure 2-5 , a kind of diameter measuring method based on scissors, is characterized in that, realizes diameter measurement by scissors 1, straightedge and protractor 3; The first end of straightedge is connected with hinge point A of scissors, the second of straightedge The end is used to contact the surface of the measured object; the measured object is cylindrical or cylindrical;

[0083] The measurement steps are as follows:

[0084] Step 1: Open the scissors;

[0085] The opening direction is perpendicular to the axis of the measured object;

[0086] Step 2: Put the second end of the ruler against the surface of the measured object; and clamp the two arms of the opened scissors to the measured object;

[0087] Step 3: Reading;

[0088] The read data includes the angle data measured by the protractor;

[0089] Step 4: Calculate the diameter;

[0090] The diameter Φ of the measured object is calculated based on the length of the ruler and the opening a...

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Abstract

The invention discloses a diameter measurement method based on a shear ruler. In the method, diameter measurement is achieved through the shear ruler (1), a straight ruler and a protractor (4); the first end of the straight ruler is connected with the hinging point A of the shear ruler, and the second end of the straight ruler is used for making contact with the surface of a measured object whichis cylindrical. The method includes the measurement steps that 1, the shear ruler is opened, wherein the opening direction is perpendicular to the axial direction of the measured object; 2, the secondend of the straight ruler is made to abut against the surface of the measured object, and the two arms of the opened shear ruler are made to clamp the measured object; 3, data is read, wherein the read data includes angle data measured by the protractor; 4, the diameter is calculated, wherein the diameter phi of the measured object is obtained through calculation based on the length of the straight ruler and the opening angle of the straight ruler measured by the protractor. The diameter measurement method based on the shear ruler is ingenious in concept, easy to implement and capable of achieving automatic diameter measurement.

Description

technical field [0001] The invention relates to a scissors-based diameter measuring method. Background technique [0002] Standing tree diameter, especially the diameter at breast height (diameter at breast height) is an important basic tree measurement factor in forest measurement work, which is directly related to the estimation of forest growth, forest stock volume, forest productivity and forest quality. [0003] At present, the commonly used tools for measuring diameter include calipers, girths, and laser calipers; [0004] (1) Calipers: Also known as calipers, they are made of wood and aluminum. Constructed as figure 1 , can be divided into fixed feet, sliding feet and ruler body. When measuring the diameter, the ruler body and the two feet are in contact with the measured tree section at the same time, and the reading is taken. [0005] Its disadvantages are: the sliding foot is in tight contact with the ruler body, it is not easy to slide, it is loose, it is ofte...

Claims

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Application Information

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IPC IPC(8): G01B5/00G01B5/08G01B7/02
CPCG01B5/0035G01B5/08G01B7/02
Inventor 肖化顺龙时胜
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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