Method for detecting pressing mark of photovoltaic aluminum section on line

Abstract

The invention provides a method for detecting the pressing mark of a photovoltaic aluminum section on line. The method comprises the following steps of: arranging a start photoelectric switch, a stop photoelectric switch and a camera on a conveying belt of the aluminum section; and when the aluminum section quickly passes through a monitoring area, sequentially triggering the start photoelectric switch, the stop photoelectric switch and the camera, processing image information acquired by the camera by using an industrial personal computer, and identifying whether the pressing mark exists on a workpiece or not and is qualified or not, so that the aim of detecting whether the aluminum section is qualified or not is fulfilled. The image information acquired by the camera for detecting the pressing mark is processed by the industrial personal computer, so that the pressing mark of the aluminum section under the quick movement condition is effectively detected, and the invention has the characteristics of simple and compact detection device and simple and reliable detection method.

Description

technical field [0001] The invention relates to the technical field of on-line detection, in particular to a method for automatically detecting whether there is a standard indentation on an aluminum profile workpiece applied to a photovoltaic power generation system by using a reflective photoelectric switch and a camera. Background technique [0002] Aluminum profiles are structural parts widely used in photovoltaic power generation systems. With the development of photovoltaic systems, the demand for photovoltaic aluminum profiles is increasing. The surface of the aluminum profile needs to be machined with indentations that meet the standards. At the workshop site of the photovoltaic power generation system, it is necessary to conduct online inspections on whether the qualified indentation is formed on the aluminum profile. At present, most photovoltaic power generation enterprises in China still use manual observation for the inspection of aluminum profiles. Several worke...

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Problems solved by technology

[0003] The disadvantages of manual inspection mainly include: there is a lot of dust and noise in the workshop, and the working environment of workers is bad; when normal human eyes observe moving objects continuously for a long time, it will cause discomfort such as dizziness and eye swelling, and the inspectors cannot work continuously for a long time. It is prone to missed detection and wrong detection; for the detection of high dimensional accuracy, it is difficult for human eyes to accurately judge, the error is large, and the quality of detection cannot be guaranteed; the speed of manual observation is limited, which greatly limits the production efficiency

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