Apparatus and method for online detection of performances of wood plate by using near infrared spectroscopy

A near-infrared spectrum and near-infrared technology, which is applied in the field of detection devices for the properties of solid wood boards, can solve the problems of inaccurate analysis results and high prices, and achieve the effect of improving detection speed and reducing time-consuming and laborious

Inactive Publication Date: 2016-04-13
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a device and method for detecting the performance of solid wood boards by using near-infrared spectrum analysis, so as to solve the problem that array-type near-infrared equipment is expensive, and single-point near-infrared equipment collects spectral information on solid wood, and its analysis results are inaccurate The problem

Method used

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  • Apparatus and method for online detection of performances of wood plate by using near infrared spectroscopy
  • Apparatus and method for online detection of performances of wood plate by using near infrared spectroscopy
  • Apparatus and method for online detection of performances of wood plate by using near infrared spectroscopy

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specific Embodiment approach 1

[0019] Specific implementation mode one: the following combination Figure 1 to Figure 3 This embodiment will be specifically described. The device in this embodiment includes a workbench 1, a plate bearing and moving part 2 to be tested, a near-infrared probe carrying device 3, a sorting part, a distance measuring device 4, a near-infrared probe height adjustment part 5, a near-infrared probe 6, a camera 8, Clamping device 9, feeding platform 11 and host computer;

[0020] The bearing and moving part 2 of the plate under test is composed of two longitudinal guide rails, a transverse guide rail and a moving part, and the longitudinal guide rail and the transverse guide rail are fixedly arranged on the upper surface of the workbench 1;

[0021] The near-infrared probe carrying device 3 is frame-shaped and straddled above the plate to be tested and the moving part 2;

[0022] The near-infrared probe height adjustment part 5 is suspended on the near-infrared probe carrying devi...

specific Embodiment approach 2

[0030] Specific implementation mode two: the following combination image 3 This embodiment will be specifically described. Compared with Embodiment 1, this embodiment specifically defines that the clamping plate 15 is composed of a clamping plate 15-1, a stopper 15-2 and a connecting plate 15-3, and the clamping plate 15-1 is fixed on the connecting plate 15-3. On the surface, the block 15 - 2 is fixed on one end of the splint 15 - 1 in the length direction, and the connecting plate 15 - 3 is fixed on the slider of the clamping device 9 . In this way, the two clamping plates 15 are arranged oppositely, and the inner surface of the stopper 15 - 2 realizes the positioning of the end surface of the measured plate 10 .

specific Embodiment approach 3

[0031] Specific implementation mode three: the following combination image 3 This embodiment will be specifically described. Compared with the second embodiment, this embodiment specifically defines that elastic rubber pads 15-4 are arranged on the surfaces of the splint 15-1 and the baffle 15-2. Such arrangement reduces mechanical damage.

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Abstract

The invention discloses an apparatus and a method for online detection of performances of a wood plate by using near infrared spectroscopy, and relates to an apparatus and a method for detecting performances of a solid plate. The problems of high price of an array near infrared device and inaccuracy of the analysis result of wood spectrum information acquired by a single point type near infrared device are solved in the invention. A single point type detector is adopted to analyze the performances of the wood plate, and a traversing device is designed to dynamically and flexibly realize acquisition of data of the surface of the wood plate; and a near infrared probe and a range-between-wood sheets finding sensor are arranged, the height of the near infrared probe is controlled, and a distance between the probe and a detected wood plate is constant, so the spectrum information expression accuracy is realized. A camera is used to determine whether the wood sheet has defects or not in order to improve the detection speed, and if the wood plate has defects, the performances of the wood plate cannot meet requirements, and the solid plate is directly rejected; and a computer is directly connected to carry out subsequent spectrum information processing to improve the detection speed, and automatic detection reduces the time and labor consumption of manpower.

Description

technical field [0001] The invention relates to a detection device and method for the properties of solid wood boards. Background technique [0002] The chemical composition (such as lignin, cellulose, etc.) and physical properties of wood can be detected by using near-infrared spectrometer. Since the distance between the probe and the measured object needs to be constant during the detection of near-infrared detectors, there are limitations of inconvenient application in industrial batch detection. [0003] Near-infrared detectors can be divided into two types: array type and single point type. The array-type near-infrared equipment can collect multi-point near-infrared spectral information each time, and express spectral information through average processing. Arrays are relatively accurate, but expensive. The price of single-point near-infrared equipment is relatively cheap, but solid wood has anisotropic characteristics, so simply using single-point detectors to rando...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359G01N21/3563
CPCG01N21/3563G01N21/359
Inventor 张怡卓李超涂文俊卢振侯弘毅梁玉亮
Owner NORTHEAST FORESTRY UNIVERSITY
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