Reference Marker Calibration for Coating Measurement Sensors
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Solution Overview
Problem
In the production of battery electrode sheets, accurately determining the installation positions and relative distances of detection devices along the conveyance path is challenging due to installation errors and variations, leading to inaccuracies in coating amount measurements.
Innovation Solution
A measurement apparatus and method that utilize a processor to collect detection results from detection devices equipped with reference markers, calculating the inter-device distance based on these results to synchronize and adjust the installation positions of the devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement and calculation of inter-device distances is performed, then flexibility and adaptability are maintained, but measurement precision and manufacturing precision deteriorate due to human error
Solution Approach 1:
The measurement object itself serves as the measurement tool by providing reference markers that enable detection devices to automatically determine their own installation positions and inter-device distances, eliminating the need for external manual measurement tools and procedures
Solution Approach 2:
Manual mechanical measurement and calculation methods are replaced with an automated optical/electronic detection system that uses reference markers and image processing to automatically determine installation positions and calculate inter-device distances
2Measurement precision
If detection devices are installed at different positions along the conveyance path, then coating amount measurement capability is improved, but reliability deteriorates due to difficulty in accurately obtaining installation positions and relative distances
Solution Approach 1:
Reference markers are introduced as intermediary elements that are attached to the measurement object and serve as mediators between the detection devices and the installation position information, enabling automatic and accurate determination of device positions without direct manual measurement
Solution Approach 2:
The system uses reference markers that provide feedback information about the measurement object's position and movement, allowing detection devices to automatically adjust and determine their installation positions based on the detected reference marker locations
3Productivity
If automatic calculation of inter-device distance is implemented, then productivity is improved by reducing manual operations, but device complexity increases due to need for reference markers and detection systems
Solution Approach 1:
The reference markers serve multiple functions: they act as position references for detection devices, provide scaling information for distance calculation, and enable both installation position determination and inter-device distance calculation simultaneously, reducing the need for separate measurement systems
Solution Approach 2:
Instead of directly measuring physical distances between detection devices, the system creates a virtual model by detecting reference markers and calculating positions through image processing and coordinate transformation, replacing direct physical measurement with informational copying
Data Source
AI summary
A measurement apparatus includes a processor configured to collect, from each of detection devices installed in a conveyance direction of a measurement object having a reference marker, each of detection results of the reference marker detected by the respective detection devices, and calculate, based on the collected detection results, an inter-device distance that indicates an interval at which each of the detection devices is installed.