System and method for detecting shell of automobile battery pack based on X ray

Abstract

The invention discloses a system and method for detecting shell of automobile battery pack based on an X ray. The system comprises an upper computer, a flat panel detector, a ray tube, a high-pressure generator, a water cooler and a lower computer, wherein a control end of an upper computer detector is connected with a signal end of the flat panel detector, a control end of the flat panel detector is connected with a signal end of the ray tube, a high-pressure working end of the ray tube is connected with a signal end of the high-pressure generator, a working signal end of the high-pressure generator is connected with a working end of the water cooler, a water pipe flow-out end of the water cooler is connected with the ray tube, an operational working end of the high-pressure generator is connected with a high-pressure control end of a PLC mechanical control system, a working signal end of the upper computer is connected with a signal end of the lower computer, and an operational signal end of the lower computer is connected with a signal output end of an operation panel. A station database of the shell of the automobile battery pack is automatically invoked after a product model is manually selected, so that the automatic loading and unloading and the automatic selection of an image photographing station are realized.

Description

technical field [0001] The present invention relates to X-ray defect detection technology, in particular to an X-ray-based detection system and detection method for the casing of an automobile battery pack. Background technique [0002] At present, X-ray image inspection systems are often used for defect detection in the production of automobile battery pack casings, that is, X-ray tubes and flat panel detectors are used to obtain radiographic images of automobile battery pack casings for defect detection and analysis. Due to the limitation of the shooting area of ​​the flat-panel detector, for a car battery pack case, it is usually necessary to take 10 to 20 images ranging from the front and side, in order to detect all parts of the car battery pack case. In the existing defect detection system for the casing of the automobile battery pack, the flat panel detector, the ray tube and the casing of the automobile battery pack need to be moved to a proper position in order to o...

AI Technical Summary

Problems solved by technology

In the existing defect detection system, it is impossible to automatically realize loading and unloading, and it is impossible to automatically judge the shooting position of the car battery pack shell. It can only be transported to a specific position in the detection area by two operators, and then subjective visual judgment is made according to the real-time radiographic image, and manual adjustment is made. Shooting parts of the car battery pack shell, to obtain the radiographic image of the car battery pack shell at the desired station, so that the human eye can clearly detect whether there are defects in the key parts of the car battery pack shell

In this way, when the operator detects defects on the assembly line, each car battery case needs to be transported to a specific position in the inspection area by two operators, and then manually adjust the positions of the flat panel detector, ray tube and car battery case according to the parts to be inspected. It is cumbersome; secondly, the stability is poor, and manual adjustment is difficult to ensure that all key parts of the car battery pack casing can be completely tested, and some parts may be missed due to human negligence; more importantly, this manual adjustment method cannot carry out follow-up automatic testing , because the automatic recognition and detection algorithm of the image depends on the set station data

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