Stumpage diameter at breast height accurate real-time automatic measuring device

Abstract

The invention relates to a stumpage diameter at breast height measuring device, in particular to a stumpage diameter at breast height accurate real-time automatic measuring device. The stumpage diameter at breast height accurate real-time automatic measuring device comprises a positioning device and a measuring device fixed on the positioning device. A lower end of the measuring device is connected with an encoder. The measuring device includes a housing, and a main shaft and a measuring line which are located within the housing. One end of the measuring line is wound on the main shaft; the other end of the measuring line extends out of one side of the measuring device and is fixed with the other end of the measuring device after being wound around the stumpage; and the encoder is connected with a lower end of the main shaft. The device of the invention can carry out an accurate real-time automatic measurement, and has the beneficial effects of easy installation and maintenance, easy data processing and acquisition, and the like.

Description

technical field [0001] The invention relates to a device for measuring the diameter at breast height of a standing tree, in particular to an accurate and real-time automatic measuring device for the diameter at breast height of a standing tree. Background technique [0002] In order to realize the precise management and efficient utilization of trees, it is necessary to accurately grasp the growth information of trees and the interaction between them and environmental factors, and accurately analyze the changes in the biological and ecological characteristics of tree growth; obtain tree growth data accurately and in a timely manner Information and environmental factor information are the most basic prerequisites for carrying out the above research work. The measurement factors of tree growth are mainly diameter at breast height and tree height. Among them, tree height is relatively difficult to measure accurately. Studies have shown that there is a certain correlation betwee...

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Problems solved by technology

[0003] The existing measurement method is to directly measure the growth of trees by entering the forest land manually. This measurement method has a large workload, and due to the limitation of measurement conditions, continuous, real-time, and automatic data collection cannot be realized, and only a limited number of measurements can be made. measurement, it is impossible to grasp the dynamic growth process of trees in detail

There is also a class of methods such as the method and device for real-time automatic measurement of the diameter growth of living trees such as Chinese patent application number 200810055755.6. The designed device adopts a group of linear force sensors to collect data, configures data processor elastic elements, etc., but is bulky. Complex structure, inconvenient for installation, maintenance, data processing and collection

There is also a tree diameter automatic measuring device such as the Chinese patent application number 201110365947.9. The designed device adopts a linear displacement sensor, and the tree diameter is calculated through the transmission structure and formula. There are errors in the transmission structure in manufacturing and installation, and in the calculation There are also errors in the measurement, and accurate measurement cannot be achieved

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