CCD based strip automatic centering CPC detecting system and detecting method

An automatic centering and strip technology, applied in measuring devices, winding strips, guiding/positioning/aligning devices, etc., can solve the problems of low detection accuracy, limited light interference detection range, etc., and achieve anti-interference Strong, easy maintenance and debugging, high detection accuracy

Inactive Publication Date: 2007-08-08
XIAN UNIV OF TECH
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Problems solved by technology

[0019] In order to solve the defects that the existing photoelectric detection system is susceptible to ambient light interference, limited detection range, and low detection accuracy, the purpose of the present invention i

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  • CCD based strip automatic centering CPC detecting system and detecting method
  • CCD based strip automatic centering CPC detecting system and detecting method

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033]The detection system of the present invention includes a light source 4 and a left detection sensor 1 and a right detection sensor 2 for respectively detecting the positions of the edges on both sides of the strip 3 . The light source 4 is a rectangular array composed of infrared diodes with a wavelength of 700-900nm, which has the characteristics of stable light source, long service life and easy installation. The left detection sensor 1 and the right detection sensor 2 have the same structure, including a lens, a narrow-band filter, a linear array CCD, a CCD drive circuit, and a detection processor. This detection system uses electronic coupling device linear array CCD as the photosensitive device. The light emitted by the light source 4 is focused on the photosensitive device linear array CCD by the lens. Since the spectral sensing r...

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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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Application Information

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IPC IPC(8): G01B11/00B65H23/032B21B39/14
Inventor 刘丁郑岗宋念龙江丽萍张兴彦李琦
Owner XIAN UNIV OF TECH
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