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Forestry compass with tree measuring function and use method thereof

The technology of a tree measuring instrument and a compass instrument is applied in the field of instruments for sampling survey of forest resources, which can solve problems such as troubles and errors, and achieve the effect of realizing data processing and improving measurement accuracy.

Inactive Publication Date: 2006-02-08
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

[0007] In order to overcome the many troubles and errors that the existing angle gauge inevitably brings in the process of measuring forest stands, the purpose of the present invention is to provide a forest compass dendrometer and its use method

Method used

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  • Forestry compass with tree measuring function and use method thereof
  • Forestry compass with tree measuring function and use method thereof
  • Forestry compass with tree measuring function and use method thereof

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Embodiment Construction

[0020] The forest compass dendrometer and its method of use are different from the prior art, and have been greatly improved, specifically:

[0021] 1) Forest compass dendrometer: It integrates forest compass measurement technology and angle gauge tree measurement technology, such as figure 1 As shown, four vertical wires are respectively arranged on both sides of the cross wire vertical wire 5 of the forest compass telescope reticle reticle, wherein the length of the inner vertical wire is smaller than the outer vertical wire length, and the lengths of the two symmetrical vertical wires are equal ; The distance between the vertical wire 1 and the vertical wire 9, the vertical wire 2 and the vertical wire 8, the vertical wire 3 and the vertical wire 7, the vertical wire 4 and the vertical wire 6 is respectively the angle of view α4=2 corresponding to different angular gauge coefficients °17′31.1″, α3=1°37′14.2″, α2=1°08′45.4″, α1=0°48′37.1″ and the distance from the center O o...

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Abstract

The invention discloses a forest compass tree-surveyor and its using method. The arranges four vertical threads on two sides of the cross wire vertical thread of the forest compass telescope cross wire dividing plate; it possesses forest compass angle and the function of angle meter measuring tree as an integer, when observing, you can choose a pair of symmetric vertical thread of the cross wire dividing plate by different angle meter factor, and then it uses forest compass tree-surveyor to aim at the front tested tree and then uses the visual line of the two vertical thread and the relationship between the tested trees to count the number of the tree; it then uses the angle measuring function of the forest compass tree-surveyor to measure the dip angle and dose altitude mending to each tree; it uses programmable calculator fx-4800p to compile automatic computing software to process the data.

Description

1. Technical field [0001] The invention relates to an instrument for sampling survey of forest resources and its use method, in particular to a forest compass dendrometer and its use method. 2. Technical Background [0002] So far, the forest compass is mainly used for magnetic orientation and distance, level, height difference, slope angle and other measurement aspects. The angle rule is a widely used stand determination tool in forestry. At present, the most advanced angular gauge dendrometer is still Bitterlich, W. Invented stand speed measuring mirror. However, in the actual operation of the field survey, there are many errors in the angle measurement tree: [0003] ① The error caused by the forward movement of the orbiting position. The standing position of the human body is not perpendicular to the ground, according to the principle of enlarging the circle with the angle gauge, an error occurs. [0004] ②The observation position is inaccurate. Due to the influence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02G01B9/00G01B11/00G01C17/00
Inventor 冯仲科
Owner BEIJING FORESTRY UNIVERSITY
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