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Device and method for recognizing number of cast workpiece scanned by laser

A laser scanning and casting technology, applied in character and pattern recognition, computer parts, instruments, etc., can solve problems such as being only suitable for general printed matter or handwritten text, not suitable for use, and achieve a high degree of automation, high speed, The effect of high measurement accuracy

Inactive Publication Date: 2012-07-25
CHONGQING UNIV
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  • Application Information

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Problems solved by technology

Since this system collects images and recognizes characters through visible light, it is only suitable for general printed matter or handwritten text, and is not suitable for recognizing workpiece numbers without color contrast on railway castings

Method used

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  • Device and method for recognizing number of cast workpiece scanned by laser
  • Device and method for recognizing number of cast workpiece scanned by laser
  • Device and method for recognizing number of cast workpiece scanned by laser

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with drawings and embodiments.

[0049] A laser scanning casting workpiece number identification device, which includes an infrared sensor, a laser two-dimensional scanning sensor, an image collector, a character recognition host, a computer control system and a database,

[0050] An infrared sensor is used to monitor whether the casting enters the detection area, and sends a discrimination signal to the computer control system that the casting enters the detection area;

[0051] The laser two-dimensional scanning sensor scans the workpiece number on the casting under the control of the computer control system;

[0052] The image collector preprocesses the workpiece number scanned by the laser two-dimensional scanning sensor, and obtains a binarized workpiece number image;

[0053] The character recognition host uses the pattern recognition algorithm to recognize the workpiece number image processed b...

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Abstract

The invention provides a device for recognizing the number of a cast workpiece scanned by a laser, which comprises an infrared sensor, a two-dimensional laser scanning sensor, am image collector, a character recognition host, a computer control system and a database. The invention further provides a method for recognizing the number of the cast workpiece scanned by the laser. The method comprises the following steps: (1) detecting whether the cast workpiece enters a detection area; (2) scanning the character sign on the cast workpiece; (3) collecting a cast workpiece number scanning image; (4) monitoring whether the cast workpiece leaves the detection area; (5) recognizing the image; and (6) storing the image into a database. Due to the adoption of the device and method for recognizing the number of the cast workpiece scanned by the laser, the number of the cast workpiece can be recognized without being easily affected by the outside environment and the measured data can not be affected by the color, the surface material and the ambient light. The device and method have the advantages of high measurement accuracy, high degree of automation, high speed and operation simplicity.

Description

technical field [0001] The invention relates to a workpiece number identification device and method, in particular to a laser scanning-based workpiece number identification device and method. Background technique [0002] At present, a large number of railway castings (such as bolsters and side frames) use X-ray digital photography (DR) for non-destructive testing. After the DR detection, analysis and evaluation of the casting, it is necessary to enter the factory code of the detected casting, that is, the workpiece number, in the detection information database. The workpiece number is composed of letters and numbers. Traditional input methods include: manual input, DR image automatic recognition and camera automatic recognition. [0003] Manual input means that the operator reads the workpiece number from the casting and then manually inputs it into the computer. This method has the disadvantages of time-consuming, labor-intensive, low degree of automation, and error-pron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G06K9/62
Inventor 王珏邹永宁吴永超刘明进
Owner CHONGQING UNIV
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