Folding type tree diameter growth real-time precision measurement instrument

A technology for precise measurement and growth, applied in electrical/magnetic diameter measurement, electromagnetic measurement devices, etc., can solve the problems of large difference in tree diameter and poor comparability, and achieve long working life, light weight, high sensitivity and resolution. Effect

Active Publication Date: 2015-02-04
CHINA JILIANG UNIV
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Problems solved by technology

If the difference in tree diameter is large, the

Method used

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  • Folding type tree diameter growth real-time precision measurement instrument
  • Folding type tree diameter growth real-time precision measurement instrument
  • Folding type tree diameter growth real-time precision measurement instrument

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[0025] Specific embodiments of the present invention The plant diameter and growth precision measuring device is designed according to the functional relationship between the tree diameter change and the mechanical structure of the device. The present invention will be further described below with reference to the accompanying drawings.

[0026] Such as figure 1 As shown, it is the principle of a precision measuring device for plant diameter and growth, which can be derived as the formula (1):

[0027] (1)

[0028] among them, d Is the trunk diameter, r Is the radius of the trunk, b Is the length of the hypotenuse of the V-shaped bracket, α Is the angle between the top of the fixture (90°≤ α ≤150°), l 1 Is the measured value of the scale ruler, l 0 Is the distance between the sensor fixture and the tree trunk, x It is the measured value of micron displacement sensor.

[0029] This embodiment includes a positioning bracket, a grid ruler, a sensor fixture, a micron displacement sensor...

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Abstract

The invention discloses a folding type tree diameter growth real-time precision measurement instrument. The device can accurately measure tree diameter in real time, the size of the device is small, the device can be folded, and the device is convenient to carry. The measurement device comprises a bracket, a gate ruler, a sensor fixture, a micron displacement sensor and a signal transmission processing circuit. According to the device, the mode of multi-point positioning and three-point measurement of diameter is used, two parts are assembled to form a V-shaped body with an included angel of 90 degrees to 150 degrees, and combined with the micron displacement sensor installed at the diagonal coincide part of a V-shaped angle, the measurement of the tree diameter is realized. The micron displacement sensor and the gate ruler carry out remote data transmission with a host machine through the signal transmission processing circuit. According to the folding type tree diameter growth real-time precision measurement instrument, the tree diameter and the micro change amount can be stably measured in real time at the same time, and a measurement error is reduced. The device can be folded and is convenient to carry, the device is convenient to use, the weight of the device is small, the size of the device is small, and the damage to a trunk by the fixture is small.

Description

technical field [0001] The invention belongs to the technical field of test and measurement, and in particular relates to a foldable real-time precision measuring instrument for tree diameter growth. Background technique [0002] As the main body of terrestrial ecology, forests can effectively absorb CO in the atmosphere 2 and fix it in vegetation or soil, while evaluating plants fix CO 2 The quantity (that is, its growth) is mainly realized by the two quantities of tree diameter and tree height. Due to the inaccuracy of measuring the parameter of tree height, the parameter of tree diameter is particularly important when measuring plant growth. The trunk will periodically expand and contract according to the environment or its circadian rhythm, and these physiological activities directly reflect the physiological state of the trunk. The physiological expansion of the trunk is due to the fact that the trunk stores water, and the evaporation of the water reduces the pressur...

Claims

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Application Information

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IPC IPC(8): G01B7/12
Inventor 李东升姚静远陈爱军于航冷国强
Owner CHINA JILIANG UNIV
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