Industrial Facility Map Correction for Mobile Vehicle Navigation
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Solution Overview
Problem
Existing industrial facility maps generated by CAD systems often deviate from the actual layout, leading to inaccuracies in vehicle-accessible and closed regions, which can hinder efficient navigation by mobile systems.
Innovation Solution
A method to generate a correction map using sensors on mobile systems to detect immobile objects, overlaying it with a base map to correct metric features and transfer location-dependent parameters, utilizing graph theory to align topological features and account for orientation differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a base map is generated by a CAD system, then the map can be created efficiently with planned routes and regions, but the map accuracy deviates from the actual facility layout
Solution Approach 1:
The system uses mobile systems equipped with sensors to continuously scan the actual facility layout and compare it with the CAD base map. Discrepancies are detected and used to generate correction maps that update the base map, creating a feedback loop that maintains map accuracy without sacrificing the efficiency of CAD-based planning
Solution Approach 2:
The CAD system performs preliminary map generation with planned routes and regions, which is then refined by automated scanning. This preliminary action allows efficient initial map creation while subsequent automated corrections ensure accuracy matches the actual facility layout
2Manufacturing precision
If manual correction of map errors is performed, then map accuracy can be improved, but the time and effort required increases significantly
Solution Approach 1:
The system performs self-correction by automatically detecting discrepancies between the base map and actual facility layout using mobile scanning systems. The correction map generation and base map updates are performed automatically without manual intervention, eliminating time-consuming manual correction processes while maintaining high map accuracy
Solution Approach 2:
Manual mechanical correction processes are replaced with automated sensor-based detection and algorithmic map correction. Mobile systems with sensors automatically scan the facility, detect immobile objects, and generate correction maps, substituting human labor with automated technological systems
3Manufacturing precision
If the base map is frequently updated to reflect actual layout changes, then map accuracy is maintained, but the complexity of map management increases
Solution Approach 1:
The map management system is segmented into distinct functional modules: base map generation by CAD system, automated scanning by mobile systems, discrepancy detection algorithms, correction map generation, and base map update mechanisms. This segmentation allows each module to operate independently and simplifies overall system management while maintaining continuous map accuracy
Data Source
AI summary
In a method for operating an industrial facility which has at least one mobile system, a base map of the industrial facility is generated, which has information about at least one vehicle-accessible region and at least one closed region; a correction map of the industrial facility is generated, which has information about at least one vehicle-accessible region and at last one closed region; the base map is overlaid with the correction map; at least one metric feature of the base map is replaced by a metric feature of the correction map when a difference between a metric feature of the base map and a metric feature of the correction map is detected.