Battery Packaging Camera Alignment Detection Using Reference Marks
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Solution Overview
Problem
Current secondary battery packaging systems fail to accurately detect misalignment of the photographing device, leading to misrecognition of tray alignment states, which affects the precision and stability of the packaging process.
Innovation Solution
A system and method that utilize a photographing device to capture an inspection image, detect identification marks, calculate distances to reference points, and determine the state of the photographing device and tray, providing alarms and corrections when misalignments are detected, with realignment processes to improve accuracy and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only the state of the tray is detected through the photographing device, then the inspection process is simple, but the state of the photographing device may be misrecognized leading to reduced measurement precision
Solution Approach 1:
An identification mark is introduced as an intermediary reference object between the photographing device and the tray. This mark serves as a mediator to indirectly assess the state of the photographing device itself, allowing the system to detect both tray alignment and photographing device alignment through the same imaging process without adding separate detection mechanisms.
Solution Approach 2:
The system establishes a feedback loop where the position of the identification mark in captured images is continuously monitored and compared against reference positions. When deviations are detected, the system can identify whether the tray or the photographing device is misaligned, enabling corrective actions to restore measurement precision.
2Ease of operation
If the photographing device state is not monitored, then the system operation is straightforward, but fault detection capability is reduced
Solution Approach 1:
The photographing device performs self-diagnosis by capturing images of the identification mark and analyzing its position relative to the tray. The same device that monitors the tray also monitors its own alignment state through the reference mark, eliminating the need for separate self-diagnosis equipment while maintaining operational simplicity.
Solution Approach 2:
The identification mark serves multiple functions simultaneously: it acts as a reference for tray alignment detection and as a reference for photographing device alignment detection. This multi-functionality allows the system to monitor both tray state and device state using the same imaging data without increasing operational complexity.
3Measurement precision
If identification mark detection is added to monitor photographing device state, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The detection of tray state and photographing device state is merged into a single process. Both states are determined by analyzing the position of the identification mark in the same captured image, using the same image processing algorithms and reference data, thereby improving measurement precision without proportionally increasing system complexity.
Solution Approach 2:
The identification mark is pre-positioned at a designated location on the tray before the inspection process begins. Reference images of the identification mark are captured when both the tray and photographing device are in known good states, establishing baseline data for comparison. This preliminary setup enables subsequent rapid assessment of both components without additional complexity during operation.
Data Source
AI summary
The present disclosure relates to a system for packaging a secondary battery and a method for detecting a fault thereof. The method according to an embodiment of the present disclosure may include: through a photographing device, photographing a part of the system so as to include an identification mark formed at a designated position of the system to acquire an inspection image; detecting the identification mark from the inspection image; calculating a position of the identification mark based on a first reference point related to a field of view of the photographing device; and determining a state of the photographing device, based on the calculated position of the identification mark and previously stored first reference information.