Work Support Device Circuit Symbol Detection

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Solution Overview

Problem

Existing work support systems using wearable terminals struggle to accurately specify the conduction path on circuit drawings converted into data formats suitable for display, as coordinate information of circuit parts is lost, making it difficult to correlate handwritten data with circuit components.

Innovation Solution

A work support device that detects circuit symbols and conducting wires from circuit drawing data and matches the detection results with handwritten conduction paths to specify the circuit parts and conducting wires through which the path passes, using units such as line detection, circuit symbol detection, and conducting wire detection, and converting data formats as needed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If circuit drawing data is converted to raster format for display on wearable terminals, then display compatibility is improved, but coordinate information of circuit parts is lost

Engineering Contradiction:

Improvedisplay compatibilityVSAvoidcoordinate information

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent introduces an intermediary processing layer that detects circuit symbols and conducting wires from the raster image, then establishes correspondence relationships between these detected elements and the handwritten conduction paths. This intermediary processing restores the lost coordinate information linkage without requiring the original vector data to be displayed on the terminal.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical coordinate-based identification system with an image processing-based system. Instead of relying on direct coordinate matching from vector data, the system uses image processing to detect circuit elements and establishes relationships through pattern recognition and spatial analysis of the raster image.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If handwritten conduction path is recorded on raster format circuit drawing, then visualization of conduction path is achieved, but specification of circuit parts becomes difficult

Engineering Contradiction:

Improvevisualization capabilityVSAvoidcircuit part specification

Core Design Contradiction:

Ease of operationVSDifficulty of detecting and measuring

Solution Approach 1:

The patent segments the circuit drawing into distinct detectable elements: circuit symbols and conducting wires. By detecting these separate elements and establishing their spatial relationships with the handwritten path, the system enables precise specification of circuit parts while maintaining the visualization benefits of raster format display.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements a feedback mechanism where the system detects circuit elements from the raster image, compares their positions with the handwritten conduction path, and provides feedback to identify and specify the corresponding circuit parts. This feedback loop enables accurate circuit part specification despite the raster format limitations.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20230237232A1Work support device, work support system, and analysis program

Publication Date: 2023.07.27 HITACHI LTD

AI summary

A work support device according to the invention detects circuit symbols and conducting wires from circuit drawing data that does not have information unique to a circuit part, and by matching the detection result with a result of tracing a conduction path by handwriting by a worker, the circuit part and the conducting wire through which the conduction path passes are specified.