PSD-based plate flatness detection system

Abstract

The invention discloses a PSD-based plate flatness detection system, and relates to the technical field of plate surface defect detection, the PSD-based plate flatness detection system comprises a detection assembly arranged at the top end of a to-be-detected workpiece, and the detection assembly comprises a laser source, a condensing lens, an imaging lens and a PSD. The laser source, the condensing lens, the imaging lens and the PSD are assembled in the detection assembly, the imaging lens collects diffuse reflection light of incident light on the surface of the workpiece to be detected and images on the photosensitive surface of the PSD, so that the flatness value of the plate is obtained, the flatness of the plate is detected, the detection efficiency is high, the detection precision is high, the overall configuration cost is low, and the detection precision is high. The production requirements can be met, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of plate surface defect detection, in particular to a PSD-based plate flatness detection system. Background technique [0002] The board is a molded product made of wood or other non-wood plants as raw materials, separated into various unit materials by certain mechanical processing, and glued with or without adhesives and other additives. In the actual production process of panels, in order to ensure the product quality of wood-based panels, it is necessary to check the quality of the panels before packaging. The most critical item in the quality inspection is the inspection of surface defects; [0003] A semiconductor photoelectric position sensitive device (Position Sensitive Device, PSD) is a photoelectric position detection device based on the photoelectric effect, which can directly convert the light projected on the surface of the PSD into a current signal that changes with the position of the spot, s...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the inspection of the surface defects of the plate mainly adopts the method of ruler and visual inspection. This detection method has low precision, large error, waste of manpower, low work efficiency and low intelligence, and is not suitable for Batch inspection of plates

Or use an angle sensor to measure, but because the conductive bracket where the sensor is installed is completely fixed, and it can only measure plates with a fixed thickness, the scope of application is narrow

[0005] For the problems in related technologies, no effective solutions have been proposed yet

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