Online strip steel boundary detection method
A technology of boundary detection and detection method, applied in the direction of length measuring device, metal processing equipment, metal rolling, etc., can solve the problems of high basic automation requirements, complex photoelectric opening equipment, difficult maintenance, etc., to achieve simple equipment, easy to implement and Maintenance, low cost effect
Active Publication Date: 2013-10-23
ANGANG STEEL CO LTD
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[0004] The invention provides a method for online detection of the strip boundary. The strip steel image is collected in real time by an image acquisition device arranged above the steel plate. The collected image includes the strip steel part and the background part, and the image features are extracted by a computer. and analysis to detect the boundary of the strip steel, solve the problem of complex photoelectric switching equipment, high requirements for basic automation, and difficult maintenance, and can operate independently without relying on other basic automation methods
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[0017] The equipment of this method is constituted as figure 1 As shown, an image acquisition device and a lighting device are installed above the running steel strip, and the image acquisition device may be a video camera, a camera with a camera function, or other imaging equipment. The image acquisition device is connected with the computing device, and the computing device is responsible for extracting, preprocessing and analyzing the collected images. The computing device can be a computer, single-chip microcomputer, DSP, FPGA and other computing and processing devices with programming capabilities. The storage device is responsible for storing the historical images of the strip, and uses the database to record information such as the position data of the strip boundary, so that it can be further utilized by other systems.
[0018] Such as figure 2 As shown, the flow process of the strip boundary online detection of the present invention is as follows:
[0019] Step 1: ...
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The invention provides an online strip steel boundary detection method. The method comprises strip steel image data collection, strip steel image data extraction, strip steel image data preprocessing, grayscale image threshold value calculation, strip steel boundary starting point and end point determining, strip steel boundary detection range determining and strip steel boundary detection, solves the problems such as equipment complexity, high basic automation requirements and maintenance difficulties of photoelectric polishing, eliminates the influence of strip steel image noise generated by image collection device or site conditions on strip steel boundaries, greatly reduces the complexity of online strip steel boundary detection, and improves the detection efficiency. According to the online strip steel boundary detection method, only a camera and a light source are needed, the transmission relies on an existing LAN (local area network) of a factory, so that the online strip steel boundary detection method is simple in equipment, low in cost and easy to achieve and maintain, capable of meeting site condition requirements and reliable in operation, and the detection results can also be used by other systems.
Description
technical field [0001] The invention relates to a strip steel detection method, in particular to an online detection method for the strip steel boundary. Background technique [0002] Strip edge detection is a key link in the strip rolling process. The traditional strip edge detection method is the mechanical detection method, which can easily cause damage to the edge of the strip and form curling. More advanced strip edge detection methods use photoelectric switches for strip edge detection. For example, in the utility model patent of "side guide plate centering device of sewing machine" whose authorization notification number is CN2907940Y, a photoelectric switch is adopted for the detection of the strip boundary on the left and right sides. In the utility model patent of "an electric actuator for automatic centering of strip steel" with the authorized announcement number CN201871892U, the photoelectric cell is installed on the frame of the equipment and read through the ...
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IPC IPC(8): B21B38/00
Inventor 王奎越宋宝宇杨春雨杨东晓高冰费静
Owner ANGANG STEEL CO LTD