A visual inspection system and method for fault identification of air-conditioning condensation pipe nozzle

Abstract

The invention belongs to the field of intelligent detection and in particular discloses a visual inspection system used for pipe orifice fault recognition of an air conditioner condenser pipe. The visual inspection system disclosed by the invention comprises a camera adjusting module, a detection mechanism servo operation module, a visual processing and abnormal pipe orifice recognition module anda fault alarm and visualization module, the camera adjusting module comprises a portal frame and a CCD camera arranged on the portal frame, the detection mechanism servo operation module comprises acamera parameter setting unit and a portal frame motion parameter setting unit, the visual processing and abnormal pipe orifice recognition module comprises a pipe orifice diameter threshold value setting unit, a pipe orifice burst feature detection unit and a pipe orifice diameter detection unit. The invention also discloses a corresponding method. The visual inspection system disclosed by the invention realizes intelligent recognition on pipe orifice features and pipe orifice size of a condenser pipe, performs fault alarm and is higher in detection precision, higher in detection speed and high in detection stability, and production efficiency can be greatly improved.

Description

technical field [0001] The invention belongs to the field of intelligent detection, and more specifically relates to a visual detection system and method for fault identification of an air-conditioning condensation pipe nozzle. Background technique [0002] In the expansion tube production process of the condenser tube in the air-conditioning industry, the quality problem of the expanded tube is mainly due to the weak consistency of the expansion hole size of the condenser tube nozzle. In order to obtain a more detailed situation of the quality problems of the expansion tubes, multiple samplings are generally taken to count the quality problems of the expansion tubes, and the problems of unqualified nozzle size and expansion cracks of the condenser tube are particularly prominent. A finned tube heat exchanger generally contains dozens or hundreds of copper tubes, and if more than three tubes fail, secondary processing or scrapping is required. [0003] In production, worker...

AI Technical Summary

Problems solved by technology

[0003] In production, workers generally use random inspection to inspect the quality of nozzles. The detection method uses vernier calipers for size measurement and visual inspection of nozzle shape characteristics, but the reliability of manual inspection is low. mm-7.0mm, due to the soft texture of the copper tube, the manual measurement error is ±0.2mm, the measurement error is large, the nozzle is small and the number is large, and it is easy to miss it by visual inspection

Moreover, the conventional sampling inspection methods cannot detect the large-scale occurrence of nozzle quality defects caused by individual expansion head and expansion rod failures in time.

In the field of condenser nozzle inspection, due to the wide variety of products, the large number of single condenser nozzles, and the complicated production site conditions, most of them use manual inspection methods, which have low detection efficiency and often miss inspections

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