Device for measuring height of tree

A tree height, measuring stick technology, used in measuring devices, height/level measurement, surveying and navigation, etc.
CN102183236AInactive Publication Date: 2011-09-14旷天水
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
旷天水
Publication Date
2011-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a device for measuring a height of a tree. The device is simple in construction, and overcomes the defects that in the conventional height finder, when the height of the tree is measured, a horizontal distance between a measurement point and the tree is needed to be measured firstly, or a surveying pole for measurement is needed to be arranged in front of the tree and the like. The device mainly comprises a sighting bar and a measuring scale provided with three fixing or movable adjusting needles respectively and arranged on a support frame, wherein one adjusting needle on one side of the sighting bar and one adjusting needle on one side of the measuring scale are shared; the sighting bar and the measuring scale are connected via the shared adjusting needle; the height of the tree is measured by sighting the tip of the tree or the base of the tree three times through the five adjusting needles on the sighting bar and the measuring scale during measurement, and no any other auxiliary tool is needed. The measuring method is simple and the measurement precision is high; the height of the tree can be read directly; and the device is a simple, practical, novel and efficient height measuring device applicable to forest environment, does not need to measure the horizontal distance, and does not need to place the surveying pole for measurement in front of the tree; when the device is used, the measurement point can be selected optionally, so the purpose of quickly and efficiently measuring the height of the tree is achieved.
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Description

technical field

[0001] The invention relates to a device for measuring tree height in forest resource monitoring and forestry investigation, in particular to a device for measuring tree height without measuring the horizontal distance and without placing a matching measuring pole in front of the tree. Background technique

[0002] Tree height is a very important factor in forest resource monitoring and forestry investigation, but the measurement of tree height has always been a difficult problem to solve. In practical work, visual estimation method or altimeter is usually used to measure height.

[0003] The visual estimation method is closely related to personal experience, and the measurement accuracy is not guaranteed.

[0004] The most commonly used altimeter is the Blume-Leiss altimeter. When measuring the height of a tree with a Bruce altimeter, it is required to measure the horizontal distance (15, 20, 30 or 40m) of a standard length with an auxiliary tool before eac...

Claims

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