Plate head bending shape detection device based on nearing fared image and method thereof

Abstract

The invention provides a plate head bent shape detection device which is based on a far infrared image. A measurement method gains the images by the heat radiation of the plate, without any external heat sources or light sources. The invention mainly comprises a CCD camera (charge coupling device), an infrared filter system, an image collecting card, and an image disposal system. The detection device is arranged beside a roller bed which is arranged behind (in front of) a rolling mill; when a hot plate is delivered to the detection system through the roller bed, the CCD camera which is provided with a far infrared filter gains the images of the head of the plate; the image disposal system achieves a smoothening disposal, an image reinforcement disposal, an image cutting disposal, an image morphology disposal, etc. of the gained images so as to gain a shape curve of the head, and fits the curve so as to gain the parameters such as the bent height, the bent curvature, the length of the bent section, etc. of the head of the plate. The invention can eliminate the interference of the steam in the production site to the gained images, the detection speed is fast, the installation of the equipment is simple, the original production process is not changed, and the invention is stable and reliable and suitable for the production sites of medium thick plates and hot continuous rolling.

Description

Technical field: [0001] The invention belongs to the technical field of rolling and detection, and in particular relates to a device and method for detecting the bending shape of a plate head based on a near-infrared image. Background technique: [0002] At present, the thickness control problem in the plate and strip rolling process has been basically solved, but there are still serious deficiencies in the aspects of plate shape, flatness, head bending and side bending control. The severe bending of the plate head during the rolling process will affect the smooth progress of the production process and the yield of the product. When the warping of the head is too large, the plate will collide with the roller or the guard plate. If it is serious, it will cause a roll accident, stop production and produce waste products; , or the head of the plate is stuck, causing damage to the rolling mill. At present, there is no effective, safe and stable method for measuring the bending...

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Problems solved by technology

The Japanese published patent application number is JP19840136314 19840630, and the authorization number is JP19840136314 19840630, which is named "SHAPE MEASURING INSTRUMENT". shape parameters, but the device cannot detect the shape of the bent head of the sheet

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