Wood board multi-camera visual inspection structure

Abstract

The utility model discloses a multi-camera visual detection structure for wood boards, which comprises a rack, a detection assembly is arranged on the rack, the detection assembly comprises a plurality of detection cameras, the plurality of detection cameras are arranged at the upper part of the rack, a calibration plate is arranged below the detection cameras and is fixedly connected with the rack, and the calibration plate is fixedly connected with the rack. The camera visual field areas of the adjacent detection cameras are partially overlapped, the overlapped parts are visual field overlapping areas, different visual field overlapping areas are the same in size, a plurality of calibration circles are formed in the calibration plate and are distributed on the calibration plate in a matrix mode, a controller is arranged on the rack, and the controller is electrically connected with the detection cameras. Through the cooperation of the plurality of detection cameras and the calibration plate, the parameter adjustment of each camera can be quickly realized, so that the photos shot by each camera can be quickly fitted, the acquisition speed of the complete photo of the long wood board is improved, and the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wood board detection device, in particular to a wood board multi-camera vision detection structure. BACKGROUND

[0002] In the production and forming process of the existing wood board, due to the quality of raw materials and the cutting and chiseling process in the processing and forming process, it is difficult to avoid the defects of the board, and the size specification of the wood board also needs to be strictly controlled when it is put into actual use. Therefore, after the wood board is processed and formed by the traditional wood board production line, the staff usually detects and measures the surface features and the size of the wood board, but this method not only has low work efficiency, but also is prone to fatigue after long-time operation, which affects the detection result.

[0003] In view of the above problems, the Chinese utility model patent with application number 202021252846.1 discloses a wood board vision detection camera structure, which comprises a rack, a transmission platform, a code scanning assembly, a detection assembly and a driving device arranged on the rack. The transmission platform is used for conveying the board, the code scanning assembly is installed at the input port of the transmission platform, the detection assembly comprises a detection camera and a camera protection device, the detection camera is connected with a distance adjusting device, the driving device comprises a motor installed in the rack and a linear motor installed on both sides of the transmission platform, the motor is used for driving the transmission platform, and the linear motor is used for driving the detection assembly to reciprocate above the transmission platform, so that the full range and high precision detection of the surface of the wood board can be realized.

[0004] However, the wood board vision detection camera structure adopts one camera to cooperate with the reciprocating movement of the motor, so as to realize the full range detection of the wood board. The camera is prone to vibration during movement, which affects the shooting accuracy of the camera and the detection accuracy. In addition, one camera is used to take pictures of each region of the long wood board, and then the pictures of each region are fitted, which needs a long detection time and affects the detection efficiency. UTILITY MODEL CONTENTS

[0005] The utility model provides a wood board multi-camera vision detection structure, which aims to solve the problems of the detection accuracy of the existing wood board vision detection camera structure being easily affected by vibration and the low detection efficiency.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A kind of wood board multi-camera visual inspection structure, comprising: rack, detection component is provided on the rack, the detection component includes: several detection cameras, several detection cameras are arranged on the upper portion of rack, several detection cameras same height and same straight line are arranged, detection camera below is provided with calibration plate, calibration plate is fixedly connected with rack, the camera field of view area of adjacent detection camera partially overlaps, overlapping portion is field of view overlap area, different field of view overlap area is same in size, several calibration circles are opened in calibration plate, several calibration circles are matrix distribution on calibration plate, controller is provided on the rack, controller is electrically connected with several detection cameras respectively, and the controller is used to carry out image fitting to the shooting picture of several detection cameras and carries out detection analysis to the image after fitting.

[0008] Further, the interval between adjacent calibration circles in the same row is 100 mm, and the interval between adjacent calibration circles in the same column is 100 mm.

[0009] Further, a label is provided below each column of calibration circles.

[0010] Further, a positioning assembly and a clamping assembly are provided on the rack, the positioning assembly is used for positioning the wood board to be measured, and the clamping assembly is used for clamping the wood board to be measured.

[0011] Compared with the prior art, the wood board multi-camera visual inspection structure has the following technical effects:

[0012] 1. The wood board multi-camera visual inspection structure can quickly adjust the parameters of each camera, quickly fit the photos taken by each camera, improve the acquisition speed of complete photos of long wood boards, and improve the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a detection camera distribution schematic diagram of the wood board multi-camera visual inspection structure;

[0014] Figure 2 is a calibration plate schematic diagram of the wood board multi-camera visual inspection structure.

[0015] In the figure: 1, detection camera; 101, camera field of view area; 102, field of view overlap area; 2, calibration plate; 201, calibration circle. DETAILED DESCRIPTION

[0016] To make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with specific embodiments of the present application and with reference to the accompanying drawings.

[0017] When a long and wide wood board is visually detected, if only one camera is used, the height of the installed camera needs to be very high at this time, the space required by the whole detection equipment is higher, which is not suitable for the layout of the factory. If a wood board visual detection camera structure disclosed in a Chinese utility model patent with application number 202021252846.1 is adopted, the camera needs to be controlled by the controller to control the moving speed and the photographing speed, and after the photographing is completed, the photos of each part are fitted or analyzed, the detection time of a single wood board is longer, and the performance requirement of the camera is higher, and the cost of the whole detection equipment is larger. Therefore, the utility model provides a wood board multi-camera visual detection structure, which can quickly detect long wood boards and has low equipment cost.

[0018] As shown in Figures 1-2 A wood board multi-camera visual detection structure includes a rack, a detection assembly is arranged on the rack, the detection assembly includes a plurality of detection cameras 1, the plurality of detection cameras 1 are arranged on the upper part of the rack, the plurality of detection cameras 1 are arranged at the same height and on the same line, through the above arrangement, the camera visual field area 101 of each detection camera 1 is in a strip shape, which is suitable for the long strip-shaped wood board to be detected, a calibration plate 2 is arranged below the detection camera 1, the calibration plate 2 is fixedly connected with the rack, and the calibration plate 2 can be connected by bolts, which facilitates the disassembly of the calibration plate 2, the camera visual field area 101 of adjacent detection cameras 1 partially overlaps, the overlapping part is a visual field overlapping area 102, different visual field overlapping areas 102 are the same in size, the photographed photos of adjacent detection cameras 1 are parameter adjusted and fitted through the image of the visual field overlapping area 102, a plurality of calibration circles 201 are arranged on the calibration plate 2, the plurality of calibration circles 201 are arranged in a matrix on the calibration plate 2, a controller is arranged on the rack, the controller is electrically connected with the plurality of detection cameras 1 respectively, the photographing parameters of each detection camera 1 can be adjusted individually or through the controller, and the controller is used for image fitting of the photographed pictures of the plurality of detection cameras 1 and detection analysis of the fitted images.

[0019] As shown in Figure 1As shown, preferably, three detection cameras 1 are used to detect the wood board to be detected, before detection, the calibration plate 2 is fixed on the rack, the calibration plate 2 is photographed by the three detection cameras 1, the shooting parameters of each detection camera 1 are adjusted so that the adjacent visual field overlap area 102 is basically the same, preferably, the calibration circle 201 in the visual field overlap area 102 is three rows and two columns, a total of six calibration circles 201, the controller is used to fit the pictures of the three detection cameras 1, so that the six calibration circles 201 in the visual field overlap area 102 of the pictures photographed by the adjacent two detection cameras 1 are coincided, the controller saves the parameters for processing the pictures photographed by each detection camera, after the controller parameter saving is completed, the calibration plate 2 is removed from the rack, and the wood board to be detected is placed on the corresponding position for photographing detection, the controller can fit the shooting pictures of each detection camera 1 through the pre-saved parameters, and the complete picture of the wood board to be detected is quickly obtained, and the complete picture of the wood board to be detected is detected and analyzed.

[0020] As shown in the figure, Figure 2 The distance between the adjacent calibration circles 201 in the same row is 100mm, and the distance between the adjacent calibration circles 201 in the same column is 100mm.

[0021] As shown in the figure, Figure 2 The label is arranged below each column of calibration circles 201. Through the label setting, the camera visual field area 101 of the adjacent two detection cameras 1 can be avoided from not overlapping, when the camera visual field area 101 of the adjacent two detection cameras 1 does not overlap, the edge calibration circle 201 of the pictures photographed by the two detection cameras 1 is not the same, the operator can find in time and adjust the parameters of the detection camera 1, so that the partial loss of the fitting pictures photographed by each detection camera 1 is avoided.

[0022] In an embodiment, the rack is provided with a positioning assembly and a clamping assembly, the positioning assembly is used for positioning the wood board to be detected, the clamping assembly is used for clamping the wood board to be detected, the positioning assembly is matched with the shooting area of the plurality of detection cameras 1, so that the wood board to be detected is avoided from being outside the camera visual field area 101 of the detection camera 1, and the clamping assembly is used for fixing the wood board to be detected, so that the movement of the wood board to be detected does not affect the shooting picture quality of the detection camera 1.

[0023] The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled persons in the art, without departing from the creative concept of the present application, a plurality of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A wood board multi-camera vision inspection structure, comprising: The rack is provided with a detection assembly, characterized in that the detection assembly comprises a plurality of detection cameras (1) arranged on the upper part of the rack, the detection cameras (1) are arranged at the same height and in a straight line, a calibration plate (2) is arranged below the detection cameras (1), the calibration plate (2) is fixedly connected with the rack, the camera visual field areas (101) of adjacent detection cameras (1) partially overlap, the overlapping part is a visual field overlapping area (102), different visual field overlapping areas (102) are of the same size, a plurality of calibration circles (201) are arranged on the calibration plate (2) in a matrix, the rack is provided with a controller, the controller is electrically connected with the plurality of detection cameras (1), and the controller is used for image fitting of the photographed pictures of the plurality of detection cameras (1) and detection analysis of the fitted images.

2. The wood board multi-camera vision detection structure according to claim 1, wherein, The distance between adjacent calibration circles (201) in the same row is 100 mm, and the distance between adjacent calibration circles (201) in the same column is 100 mm.

3. The wood board multi-camera vision detection structure according to claim 1, wherein, A label is arranged below each column of calibration circles (201).

4. The wood board multi-camera vision detection structure according to claim 1, wherein, The rack is provided with a positioning assembly and a clamping assembly, the positioning assembly is used for positioning a wood board to be measured, and the clamping assembly is used for clamping the wood board to be measured.

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