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Intelligent measuring instrument for shadow mask aperture

A technology of intelligent measurement and aperture, applied in the field of intelligent measuring instruments, which can solve the problems of high labor intensity and inability to guarantee product consistency.

Inactive Publication Date: 2006-06-21
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, domestic manufacturers mainly rely on manual inspection, which is not only labor-intensive, but also cannot guarantee the consistency of products, because manual inspection will be affected by human factors such as vision, experience, physical strength and sense of responsibility.

Method used

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  • Intelligent measuring instrument for shadow mask aperture
  • Intelligent measuring instrument for shadow mask aperture

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Embodiment Construction

[0013] The logic structure block diagram of measuring instrument of the present invention is as figure 1 As shown, it includes a light source 1 arranged under the test bench base, and a camera lens 4 converts the aperture image of the shadow mask screen on the test bench base 2 into a video signal by the camera 5 according to the focal length positioning ratio.

[0014] Video camera 5 is connected with image acquisition card 6, and image acquisition card 6 is connected with image processing unit 7, control drive unit 8 and mechanical transmission mechanism 9 successively, wherein image processing unit 7 is provided with software for controlling image acquisition, and image acquisition card The video signal of 6 is converted into a digital signal and sent to the image processing unit 7; the image processing unit 7 is connected with the mechanical transmission mechanism 9 through the control drive unit 8, and the control drive unit 8 controls the camera lens 4 and the camera 5 to...

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Abstract

The invention discloses an intelligent measuring apparatus for shadow mask screen aperture, which comprises a light source, a base, a camera lens, a camera, an image collection card, an image treatment unit, a control drive unit, a mechanical drive, and an apparatus system integration unit to support the image process software and shadow mask screen aperture measurement software, set measurement parameter, select function, and modify data. This invention is used mainly to detect the product of color kinescope shadow mask screen aperture for size, shape and light transmittance with speed less than 5s / point and error less than 3%, which is ahead in this industry.

Description

technical field [0001] The invention belongs to the technical field of measurement and control based on image processing, relates to a detector, and further relates to an intelligent measuring instrument for the aperture of a shadow mask screen. Adjustment. Background technique [0002] The shadow mask screen is a key component in the production of color picture tubes and even color TV sets, and the product index directly affects the quality of the TV picture. In order to ensure the production quality of the shadow mask, which is the key component of color tubes, a strict quality assurance system must be adopted for each production process among the many production processes. However, in the production process of the shadow mask, due to the inherent dispersion of the process , will inevitably produce shadow mask aperture deformation and manufacturing errors. In order to ensure the consistency of product inspection, it is necessary to test products o...

Claims

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Application Information

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IPC IPC(8): H01J9/42G01B9/00G01N21/00
Inventor 韩九强姚向华张新曼盛新高吴彩玲刘瑞玲王晓绒
Owner XI AN JIAOTONG UNIV
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