Steel plate number identification device and method capable of avoiding surface light reflection of steel plate

By using an identification device combining an industrial camera and infrared light source in the steel plate automatic identification system, the problems of instability in the surface of the steel plate are solved, and high-precision identification of the steel plate number in complex industrial environments are achieved.

CN119723587APending Publication Date: 2025-03-28SHANGHAI BAOSIGHT SOFTWARE CO LTD
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Patent Information

Application Number
CN202411619208.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The smooth surface of the steel plate leads to interference with the spot, and the brightness of the industrial environment is unstable, making it difficult for traditional image recognition technology to achieve stable results in automatic recognition of steel plates.

Method used

The identification device combined with an industrial camera and an infrared light source is adopted to filter the unstable light source in the environment through an infrared bandpass filter, and the infrared light source is used to reduce spot interference, and the steel plate number is identified and processed in combination with a deep learning algorithm.

Benefits of technology

It effectively avoids the surface reflection problem of steel plates, ensures accurate identification of steel plate numbers in industrial environments with unstable light intensity, improves the accuracy and reliability of identification, and reduces false detection and missed inspections.

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Abstract

The invention provides a steel plate number recognition device and method capable of preventing the surface of a steel plate from reflecting light. The device comprises an industrial camera, an infrared light source and a character recognition device, the industrial camera is installed vertically above the identified steel plate conveying roller way, and a lens is provided with an infrared band-pass optical filter and is used for receiving infrared light and filtering an unstable light source in the environment; the infrared light sources are installed on the two sides of the industrial camera, a preset included angle is formed between the installation angle and the steel plate, and each infrared light source is provided with a light equalizing piece. And the character recognition device is connected with the industrial camera through a network, and is used for controlling the industrial camera to carry out steel plate number infrared image snapshot and carrying out picture acquisition, storage and recognition on the shot picture. By adopting the infrared light source and the infrared band-pass optical filter installed on the industrial camera lens, unstable light sources in the environment can be filtered out, only infrared light is received for imaging, the light reflection problem caused by the smooth surface of the steel plate is effectively avoided, and the camera can shoot clear and interference-free steel plate number images.
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