Vehicle body paint surface defect detection device and detection method thereof

Abstract

The invention relates to a vehicle body paint surface defect detection device and a detection method thereof. The vehicle body paint surface defect detection device comprises a servo controller, an industrial personal computer, a vehicle body conveying mechanism, a plurality of area-array cameras, a plurality of projectors and a plurality of projection screens, wherein the industrial personal computer is connected with the servo controller, and the servo controller is connected with the vehicle body conveying mechanism; the vehicle body conveying mechanism can drive a to-be-detected vehicle to move in the length direction and the height direction under the action of the servo controller and the industrial personal computer, the area-array cameras are distributed around the to-be-detected vehicle, the industrial personal computer is connected with the projector, the projection screen is arranged on the periphery of the projector and corresponds to the projector, The vehicle body paint surface defect detection device is high in acquisition efficiency, high in imaging quality, compact in system structure and low in cost.

Description

Technical field: [0001] The invention relates to the technical fields of defect detection and machine vision, in particular to a device for detecting defects on a car body paint surface and a detection method thereof. Background technique: [0002] At present, the detection of paint surface defects on automobile bodies mainly relies on traditional manual visual inspection. Due to the low detection efficiency, the detection standard is not objective enough, and it is easily affected by subjective factors such as manual distraction and fatigue, it is increasingly difficult to meet the requirements of the process. Measurement and testing requirements. Therefore, the demand for automatic defect detection devices is increasing day by day. This kind of automatic defect detection devices can not only strictly control product quality, but also conduct process traceability for product defects in time to provide data support for process quality improvement. [0003] There are many ki...

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Problems solved by technology

[0004] Aiming at the above-mentioned problems, the common defects of car body paint surface, under the premise of ensuring the detection accuracy of micron level, taking into account factors such as detection efficiency, system cost and compact structure, the present invention proposes a system with high acquisition efficiency, high imaging quality, and system structure Compact, low-cost vehicle body paint surface defect detection device and detection method suitable for mirror surface defect detection of large complex curved surfaces

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