Device and method used for on-line optical measurement of two-dimensional large size of roof battenwall material

A technology for visual measurement and wall material, which is applied to measurement devices, optical devices, instruments, etc., to achieve the effects of flexible portability, improved measurement speed and measurement accuracy, and avoidance of measurement errors

Inactive Publication Date: 2012-11-28
TIANJIN UNIV
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Problems solved by technology

[0003] Aiming at the above-mentioned prior art, the present invention provides a two-dimensional large-scale measurement device and method for roof panel materials, which are used to solve the technical problems existing in the prior art for large-scale online visual measurement, and have a higher measurement speed and large size measurement accuracy

Method used

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  • Device and method used for on-line optical measurement of two-dimensional large size of roof battenwall material
  • Device and method used for on-line optical measurement of two-dimensional large size of roof battenwall material
  • Device and method used for on-line optical measurement of two-dimensional large size of roof battenwall material

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Embodiment

[0037] The following is combined with the accompanying drawings, and the reference size is 800×800mm 2 The ceramic tile is an example to further describe the present invention in detail:

[0038] The surface of the tiles is set to be perpendicular to the main optical axis of the lens of the high-resolution area array CCD camera 1, and the tiles pass in front of the lens of the high-resolution area array CCD camera 1 at a speed of 40 m / min; the resolution of the high-resolution area array CCD camera 1 is 4000×4000, installed vertically downward at the center of the measurement platform; the standard lens 2 with low distortion and small field of view matched with the camera has a field of view of 10°×10°, and the working distance l is:

[0039] l = R a 2 + R b 2 / 2 + Δ -...

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Abstract

The invention discloses a device and method used for on-line optical measurement of two-dimensional large size of roof battenwall materials, and belongs to the field of optical measurement on large-size geometric quantities. The measuring device comprises an optical sensing system, a data acquisition circuit system, a computer information processing system, a record display system, a warning system and a sorting control system, wherein the optical sensing system is composed of a high-resolution surface-array CCD (charge coupled device) camera, a low-distortion small-viewing-field standard lens matched with the camera, a quadrangular pyramid secondary reflection plane mirror, a high-transmittivity glass cover and four primary reflection plane mirrors, and is used for detecting the image information of four corners of a measured piece; and after calibration, the measuring device processes and computes the image information, so that the actual sizes of the measured piece are obtained and displayed. With the adoption of he device and the method provided by the invention, the problems of calibration and synchronous acquisition by a plurality of cameras are solved; and the device has high measurement speed and large-size measurement precision, and is widely applied for measuring sizes of ceramic piles, floor boards, marble tiles and the like.

Description

technical field [0001] The invention relates to a two-dimensional large-scale online visual measurement device and method for roof panel materials, belonging to the field of large-scale geometric quantity visual measurement. Background technique [0002] Two-dimensional large-scale visual measurement technology is widely used in the online quality inspection of tiles, floors, marble and other roof panel materials. With the increase of the measured size, the improvement of precision requirements and the limitation of sensor size, the simple single-camera size measurement device can no longer meet the measurement requirements. At present, the multi-camera synchronous acquisition method is mostly used, that is, each camera is placed at the corner of the measured surface to collect images of each corner at the same time, and then the image processing method is used to extract the spatial coordinates of each corner point, and then realize the real-time size and shape. Measuremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02G01B11/24
Inventor 曲兴华赵首博张福民
Owner TIANJIN UNIV
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