Device and method for measuring breast-height diameter and height of standing tree

Abstract

The invention provides a device for measuring breast-height diameter and height of a standing tree, belongs to the technical field of standing tree measuring equipment, and aims to solve the problem of how to simply and simultaneously measure the breast height diameter and the height of the standing tree. The device comprises a standing tree clamping device and an operation box. The standing treeis clamped in the standing tree clamping device; the standing tree clamping device comprises a first ruler strip and a second ruler strip, and a tilt angle sensor and a laser ranging device are arranged in the operation box; the laser ranging device is used for measuring the length of a connecting line between the laser ranging device and the top and the bottom of the standing tree; the tilt anglesensor is used for measuring the angle alpha between the connecting line of the laser ranging device and the top of the standing tree and the horizontal line and measuring the angle beta between theconnecting line of the laser ranging device and the bottom of the standing tree and the horizontal line. The device is simple in structure, and can directly and accurately measure the diameter at breast height and the height of the standing tree.

Description

technical field [0001] The invention relates to the technical field of standing tree measuring equipment, in particular to a measuring device and method for measuring the diameter of a standing tree and the height of a standing tree. Background technique [0002] DBH and tree height are important indicators of standing tree growth, which are of great significance in forest resources investigation. Simple, fast and accurate measurement and storage can not only reveal the growth law of standing trees, but also contribute to ecological research. [0003] However, the traditional measurement tools are mainly calipers, diameter measuring gages, etc., which have single functions, backward methods, manual reading, not accurate enough, error-prone recorded data, and difficult to store data in time, etc., which seriously restrict forest resource investigation. Moreover, for large trees with a diameter at breast height greater than 50 cm, the measurer may need the assistance of other...

AI Technical Summary

Problems solved by technology

[0003] However, the traditional measurement tools are mainly calipers, diameter measuring gages, etc., which have a single function, outdated methods, manual reading, not accurate enough, error-prone recorded data, and difficult to store data in time, etc., which seriously restrict forest resources investigation.

Moreover, for large trees with a DBH greater than 50cm, the measurer may need the assistance of others to complete the measurement, which is time-consuming and labor-intensive.

In recent years, many emerging products have emerged, such as laser scanners, total stations, electronic barcode rulers, etc., to solve this problem. Many problems such as low measurement efficiency have not been widely used

[0004] For tree height, the measurement accuracy of the traditional visual method is far from meeting the requirements of tree forest resources investigation, and it has become an important trend to use sensing technology to measure the height of standing trees

In recent years, more and more professional standing tree altimeters have appeared on the market, such as Blue Rice altimeter, theodolite, total station, airborne laser radar, etc. to solve the problem of inaccurate standing tree height measurement, but Due to a series of problems such as inconvenient portability, high price, and complicated operation, these instruments have not been widely used.

Images