Data Display Apparatus for Manufacturing Parameter Change Analysis
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Solution Overview
Problem
Conventional data display systems for manufacturing lines fail to accurately compare measurement data before and after changes in manufacturing parameters, leading to inaccurate analysis due to imbalanced data sets and difficulties in associating measurement data across different processes, resulting in erroneous interpretations by site workers.
Innovation Solution
A data display apparatus and method that control the display to ensure an equal number of preceding and subsequent data pieces are shown, using a change time estimation unit to determine measurement data before and after parameter changes, and associating synchronous data across measuring equipment to maintain accurate data association.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional data display systems display measurement data before and after parameter changes, then data analysis can be performed, but the data sets are imbalanced leading to inaccurate analysis
Solution Approach 1:
The display control unit dynamically adjusts the number of data pieces displayed before and after the change time based on the actual data availability and the need for balanced comparison. It calculates the appropriate number of preceding and subsequent data pieces to display, ensuring that the data sets are balanced in terms of comparison value rather than just time duration, thereby improving analysis accuracy.
2Loss of information
If measurement data is associated across different manufacturing processes, then the relation between processes can be clarified, but difficulties in accurate association occur due to defective removal and re-entry
Solution Approach 1:
The system uses time information as an intermediary to associate measurement data across different manufacturing processes. Instead of relying on continuous product identification through defective removal and re-entry, the display control unit uses the change time of manufacturing parameters as a reference point to selectively display and associate preceding and subsequent data pieces, maintaining reliable process relation tracking even when products are removed or re-entered.
3Ease of operation
If equal number of preceding and subsequent data pieces are displayed, then accurate comparison is enabled, but data selection complexity increases
Solution Approach 1:
The display control unit automatically performs the complex task of selecting and balancing the number of preceding and subsequent data pieces to display. It calculates the appropriate number of data pieces based on the change time and data availability, and autonomously adjusts the display without requiring manual intervention from operators, thereby maintaining ease of operation despite the complexity of the underlying data selection logic.
Data Source
AI summary
The present invention makes a user properly compare data before and after a change with each other. A data display system displays data based on measurement data obtained by measuring equipments. In the data display system, a data synchronizer associates synchronous data as a set of measurement data obtained from a plurality of works by the measuring equipments with each other among the measuring equipments. When manufacturing parameters of a processing equipment are changed, a data comparator obtains time of the change, estimates time of a change in measurement data of the measuring equipment next to the processing equipment on the downstream side and, using the estimated change time and the synchronous data associated with each other among the plurality of measuring equipments, generates comparison data before the change based on the measurement data before the change, and comparison data after the change based on the measurement data after the change. A data display displays the comparison data before the change and the comparison data after the change by the measuring equipment.