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Device and system for automatically measuring diameter increasing amount of tree

A technology for automatic measurement and growth, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of inaccurate measurement, inconvenient carrying, measurement, sliding feet are easy to fall, etc., to improve measurement efficiency and accuracy, Maintain long-term stable work and be suitable for popularization and application

Inactive Publication Date: 2018-05-22
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 measuring device cannot realize continuous measurement

Method used

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  • Device and system for automatically measuring diameter increasing amount of tree
  • Device and system for automatically measuring diameter increasing amount of tree
  • Device and system for automatically measuring diameter increasing amount of tree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: as Figure 1-3 , a device for automatically measuring tree diameter growth, comprising a hoop-type fixing mechanism and a reading mechanism;

[0057] The hoop-type fixing mechanism includes a first arc-shaped part 1, a second arc-shaped part 2 and a telescopic rib 4;

[0058] Described first arc part and the second arc part are all provided with the hook 3 that is used to hang telescopic tendon; The first end of the arc-shaped part is connected; the second end of the first arc-shaped part is connected with the second end of the second arc-shaped part by another telescopic rib; the first arc-shaped part and the second arc-shaped part are connected with two The closed ring mechanism composed of telescopic ribs surrounds and hugs the tree to be tested;

[0059] The hoop type fixing mechanism also includes 2 connecting rods, i.e. the first connecting rod and the second connecting rod; the first arc part and the second arc part are connected with the first co...

Embodiment 2

[0073] Another device for measuring displacement is as follows: that is, it can replace pulleys and pull wires.

[0074] Such as Figure 3-5 , 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 effective The total voltage drop U across the resistor;

[0075] Then the length L=n*△k=U*△k / (R0*I0);

[0076] Among them, n is the actual effective number of resistors; △k is the distance between adjacent conductive spines; R0 is the resistance value of a single resistor; I0 is the supply current of the constant current source;

[0077] The resistive displacement sensor is provided with a plurality of resistors 21 connected in series with the same resistance value, and a conductive...

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Abstract

The invention discloses a device and a system for automatically measuring diameter increasing amount of a tree. The device for automatically measuring the diameter increasing amount of the tree comprises a holding hoop type fixing mechanism and a number reading mechanism. The holding hoop type fixing mechanism comprises a first arc-shaped component (1), a second arc-shaped component (2) and telescopic ribs (4). In measuring the diameter of the tree, a closed annular mechanism which is composed of the first arc-shaped component, the second arc-shaped component and two telescopic ribs annularlyand tightly holds the to-be-measured tree; the holding hoop type fixing mechanism further comprises two connecting rods, namely a first connecting rod and a second connecting rod; the first arc-shapedcomponent and the second arc-shaped component are respectively connected with the first connecting rod (5) and the second connecting rod (6); in diameter measurement, parallelism between the first connecting rod and the second connecting rod is kept; distance between the first connecting rod and the second connecting rod is read through a number reading mechanism; and furthermore the diameter ofthe to-be-measured tree is calculated. The device and the system have advantages of compact structure and easy application and furthermore can realize automatic continuous measurement for the diameterand the growing amount.

Description

technical field [0001] The invention relates to a device and system for automatically 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 diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/08
CPCG01B11/08
Inventor 龙时胜肖化顺
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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