CCD based strip automatic centering CPC detecting system and detecting method

Abstract

The invention discloses a CCD-strip-based automatic aiming CPC photoelectric detection system, including the detection sensor and the light source, and the light source using rectangular array of 700~900nm wavelength infrared light-emitting diodes, and the detection sensor including optical lens, narrowband filters, linear array CCD and laser alignment, also including CCD driver circuit and detection processor. The detection method of the system uses the fixed installation positive exposure, and the light of the light source through the both sides of the detected strip, and respectively received by the left and right detection sensors, and when the detected strip moving left and right, the photosensitive pixels of the linear array CCD generates the strip edge location-related changes, and outputs the corresponding strip edge location signal, and respectively sends into the left and right detection processor and CPC controller for subtraction calculation, to determine whether the location of the strip departs from the center line of the machine, and the departure distance. The system has the features of high accuracy detection, board detection range, fast response speed, good stability, and anti-disturbance ability.

Description

technical field [0001] The invention belongs to the field of photoelectric technology, and relates to a detection system for automatic centering of strips, in particular to a detection system for automatic centering of strips based on CCD, and also relates to a detection method using the detection system. Background technique [0002] CPC (Centre Position Control) system is the abbreviation of strip automatic centering system. Its function is to automatically correct the deviation of the strip and keep the central position of the strip unchanged, always on the center line of the strip production unit. In the production process of the strip, due to: (1) the winding of the incoming strip is not uniform or there is a sickle bend in the strip; (2) the axes between the drive rollers are not parallel and not perpendicular to the running direction of the strip; (3) ) The surface of the drive roller is not cylindrical, or the shape is not concentric and symmetrical, and the surface ...

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