Test Support Device for Monitoring System Symbol Verification
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Solution Overview
Problem
Conventional test support devices require manual visual checking by testers to ensure correct display and operation of monitoring and control systems, leading to potential human errors and increased test burden.
Innovation Solution
A test support method and device that obtain pre-change and post-change images from a monitoring and control system, extract changed symbols, add order information to these symbols, and output a test image for thorough checking by the tester.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tester manually checks all symbols on the display screen, then complete verification can be achieved, but human errors cause symbols to be overlooked
Solution Approach 1:
The patent introduces an automated image processing system as an intermediary between the display screen and the tester. This system captures screenshots, compares pre-change and post-change images, automatically identifies changed symbols, and adds order information to guide the tester. This intermediary eliminates human errors in symbol detection while maintaining verification completeness.
Solution Approach 2:
The patent replaces the manual mechanical process of visual inspection with an automated computer-based image processing system. The system uses screenshot capture, image comparison algorithms, and automatic symbol extraction to substitute for human visual checking, thereby eliminating human errors while achieving complete verification of all symbols.
2Reliability
If the tester checks a large number of symbols manually, then thorough verification is possible, but test burden increases significantly
Solution Approach 1:
The patent extracts only the changed symbols from the full display screen by comparing pre-change and post-change images. Instead of requiring the tester to check all symbols, the system automatically identifies and extracts only those symbols that have changed, adding order information to guide systematic checking. This extraction approach maintains verification thoroughness while dramatically reducing test burden.
Solution Approach 2:
The patent segments the verification task by dividing the display screen into individual symbol elements and further segmenting the changed symbols into an ordered sequence. This segmentation allows the tester to focus on specific changed symbols in a systematic order rather than reviewing the entire screen, reducing cognitive load and test burden while maintaining thoroughness.
3Reliability
If all symbols are checked manually without guidance, then complete coverage can be achieved, but time consumption increases
Solution Approach 1:
The patent performs preliminary actions by automatically capturing screenshots, comparing images, identifying changed symbols, and adding order information before the tester begins verification. This preliminary automated processing prepares a guided checklist of changed symbols in advance, allowing the tester to proceed efficiently with verification without wasting time identifying changes manually, thus reducing test time while ensuring completeness.
Solution Approach 2:
The patent provides feedback to the tester by adding order information to the extracted changed symbols. This feedback mechanism guides the tester through the verification process in a systematic order, ensuring all changed symbols are checked while minimizing time consumption. The ordered presentation of changed symbols provides continuous feedback on what needs to be verified and in what sequence.
Data Source
AI summary
A test support method includes a step of obtaining a pre-change image and a post-change image to be displayed on a monitoring and control system, a step of extracting, from the post-change image, multiple symbols that have changed from corresponding symbols in the pre-change image, a step of adding order information to the multiple symbols extracted, and a step of outputting a test image in which the order information is added to the multiple symbols.