Scanner for industrial X radial negative using line array video camera

A camera and X-ray technology, applied in the field of digital devices, can solve problems such as large blackness, low contrast, and thick film base

Inactive Publication Date: 2008-02-13
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, most transmission scanners are mainly used in the scanning of medical films. Industrial X-ray films have a thick base, high bl

Method used

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  • Scanner for industrial X radial negative using line array video camera
  • Scanner for industrial X radial negative using line array video camera

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Experimental program
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Embodiment Construction

[0028] The linear array camera 1 adopts a linear array CCD, the light source 4 adopts a cold light source, the motor 7 is a servo motor with an encoder, the movement mode of the negative film 3 is translational, and the control mode of the controller 22 is set to be manual, through the controller 22 Set the translation speed of the film, the luminous intensity of the light source 4, the delay time of the delayer of the photoelectric switch 23, and the CCD adopts an external trigger mode.

[0029] The mode that the software in the computer 21 is set film acquisition is an external trigger mode, sets acquisition line number and line frequency, sets the column number of acquisition image, sets the horizontal offset and vertical offset of acquisition image, and exposure time is line time, set the CCD gain size, and select the image storage path. The above parameters have default values, and can also be set and saved according to actual needs, and called later.

[0030] The film 3...

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Abstract

A special scanner used for industrial X-ray films adopting linear array camera belongs to the digital scanning device field. The overall constitution includes a linear array camera(1), a film translational device(2), a light source(4), an electrical motor(7), a speed reducer(6), a special controller and a computer. The light source irradiates the film from the back of the film, the linear array camera scans the film from the front of the film, the shift of the film relative to the linear array camera(1) and the light source(4) is realized by the film translational device(2), the electrical motor (7) and the speed reducer(5) are connected with the film translational device through a shaft coupling(5). The special controller can control the on-off of the light source(4), the start-stop and commutation of the electrical motor(7), the strength and weakness of the light source(4), and the rotational speed of the electrical motor(7). The linear array camera(1) is connected with the computer through a digital image transmission wire, and the special controller is connected with the computer through a data line. Finally, the present invention realizes one time scanning of industrial X-ray films and stores the results in the computer.

Description

technical field [0001] The invention relates to a digitizing device for industrial X-ray film, in particular to a digitizing device for realizing scanning and imaging of industrial X-ray film by using a line array camera and a linear light source. Background technique [0002] Evaluating workpieces through industrial X-ray film is the most commonly used method in industrial X-ray flaw detection. However, the evaluation process is usually manual, and the influence of human factors is great; in addition, for many important products, such as structural parts in the fields of boilers, pressure vessels, ships, aerospace, etc., regular flaw detection is required during use, and Because the negatives are difficult to preserve for a long time, it is not conducive to the long-term monitoring of these structural parts. Therefore, there is a need for a dedicated method for digitizing negatives. [0003] The past digitization methods of X-ray film have the following forms: one is to u...

Claims

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Application Information

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IPC IPC(8): H04N5/32G03B42/02
Inventor 闫志鸿宋永伦陈志翔张军张㑇
Owner BEIJING UNIV OF TECH
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