Method and system for nondestructively measuring wood density

Abstract

The present invention discloses a method and a system for nondestructive measurement of the density of a wood, and belongs to the technical field of measurement. The method comprises: obtaining a microwave band adapted to the density of an attribute-known wood to be measured; measuring the wood to be measured by using the microwave in the microwave band; calculating the dielectric constant of the wood to be measured according to the reflected microwave signal returned from the wood to be measured; and calculating the density of the wood to be measured according to the model of the relationship between the wood density and the dielectric constant of the wood and the model parameter corresponding to the attribute. The system comprises a probe, a microwave signal transmitting and receiving module, a data processing module, a man-machine interface and a control module. With the system and the method of the present invention, the advantages of nondestructive measurement of wood density, wide measurement range, rapid measurement, manpower saving, material resource saving and measurement accuracy improving can be provided.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a method and system for nondestructively measuring wood density. Background technique [0002] Biomass is an ecological term (for plants, it is specifically called plant mass), which refers to the total amount of organic matter (dry weight, including the weight of food stored in organisms) that exists in a unit area at a certain moment. Usually in kg / m 2 Or t / ha said. Forest biomass accounts for more than 90% of the global terrestrial vegetation biomass, which is an important indicator of forest carbon sequestration capacity and an important parameter for evaluating forest carbon budget. Rapid and accurate measurement of forest biomass is of great significance for research work such as forestry survey and remote sensing carbon content monitoring. [0003] There are many methods for measuring biomass, among which, the method of estimating biomass by multiplying stock volume...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is that the traditional wood density measurement method is labor-intensive, takes a long time, and the measurement cost is high, while the near-infrared spectroscopy measurement method has large errors. The present invention proposes a non-destructive measurement of wood density The method and system not only save manpower, material resources and measurement time, but also improve measurement accuracy

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