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A simple device and system for remotely measuring tree diameter growth

A measurement system and remote data technology, applied in the direction of measuring devices, electromagnetic measuring devices, mechanical diameter measurement, etc., can solve the problems of inaccurate measurement, inconvenient carrying, measurement, sliding feet easy to fall, etc., to improve measurement efficiency and Accuracy, maintaining long-term stable work, suitable for popularization and application

Active Publication Date: 2021-04-09
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] Its disadvantages are: the contact between the sliding foot and the body of the ruler is too tight, which makes it difficult to slide; if it is too loose, it will often not be parallel to the fixed foot, and 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
[0011] In addition, the existing tree diameter measurement device cannot achieve continuous measurement, and the calculated diameter needs to be converted into circumference

Method used

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  • A simple device and system for remotely measuring tree diameter growth
  • A simple device and system for remotely measuring tree diameter growth
  • A simple device and system for remotely measuring tree diameter growth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1: as Figure 1-2 , a simple device for remotely measuring tree diameter growth, comprising a belt and a measuring device body, the measuring device body comprising a mounting plate 1, a first roller (2), a second roller (3) and a clamp (6); the first roller The axis of the second roller is perpendicular to the mounting plate;

[0060] The clamp is fixed on the mounting plate, the rotating shafts of the first roller and the second roller are fixed on the mounting plate, and there is a gap between the first roller and the second roller to allow the belt to pass through;

[0061] When measuring, the first end of the belt is fixed on the fixture; the other end of the belt goes around the standing tree to be measured and passes through the gap;

[0062] There is a length reading device on the measuring device body.

[0063] The reading device is a tape measure attached to the belt. Or the belt is directly provided with a scale. Or the belt itself is a measuri...

Embodiment 2

[0087] Another device for measuring length is as follows: as a supplement or redundancy for measuring length of code disc. The device for measuring the length is used to measure the distance from the end of the belt (fixed end) to the pressing point of the two rollers. At this time, there is a circle of protrusions on the roller surface of at least one roller, which is used to compress the belt, so that the The conductive bar is in contact with the conductive sheet at the pressing point between the first roller and the belt. This measuring device is arranged on the inner side of the belt.

[0088] Such as Figure 3-4 , the length (displacement) measurement circuit is installed in the groove of the guide rail, the length (displacement) measurement circuit includes a constant current source, a resistance string and a voltage detection circuit; the constant current source supplies power to the resistance string; the voltage detection circuit is used to detect the actual and effe...

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Abstract

The invention discloses a simple device and system for remotely measuring tree diameter growth, which comprises a belt and a measuring device body, and the measuring device body includes a mounting plate (1), a first roller (2), a second roller (3) and a clamp (6); the axes of the first roller and the second roller are all perpendicular to the mounting plate; the fixture is fixed on the mounting plate, the rotating shafts of the first roller and the second roller are all fixed on the mounting plate, and the There is a gap that allows the belt to pass through; when measuring, the first end of the belt is fixed on the fixture; the other end of the belt goes around the standing tree to be measured and passes through the gap; the measuring device body is provided with a length reading device. The simple device and system for remotely measuring tree diameter growth are compact in structure, easy to implement, and can realize automatic measurement of standing tree diameter and diameter growth.

Description

technical field [0001] The invention relates to a simple device and system for remotely measuring the diameter growth of trees. 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. It 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 contact between the sliding foot and the body of the ruler is too tight, which makes it di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/10G01B5/08G01B7/12
CPCG01B5/08G01B7/12G01B21/10
Inventor 肖化顺张贵杨志高刘峰
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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