Work Machine Map Data Management via Segmented Storage
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Solution Overview
Problem
In mining sites, work machines face challenges with large volumes of map data, leading to increased storage and calculation loads when attempting to extract only the necessary data for navigation, as all map data must be stored on board and processed in real-time.
Innovation Solution
A control system for work machines that includes a position detecting device, non-contact sensors, a map data generating unit, and separate storage units to efficiently manage and update only the required map data, allowing for real-time navigation without overwhelming data storage and processing demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all map data of the mine is stored in the storage unit, then complete map coverage is achieved, but storage capacity requirements increase significantly
Solution Approach 1:
The patent divides the mine area into multiple divided areas and stores map data for each divided area separately in the storage unit. This segmentation allows the system to store only the map data for currently needed divided areas rather than all map data, reducing overall storage capacity requirements while maintaining the ability to access complete map data when needed through systematic loading of divided area data
2Reliability
If all map data is stored in the storage unit, then full map access is enabled, but calculation processing load increases when extracting only needed map data
Solution Approach 1:
The patent extracts and loads only the map data corresponding to divided areas that are currently needed for navigation into the storage unit, rather than loading all map data. The map data generating unit identifies which divided areas are relevant based on the work machine's current position and navigation requirements, then selectively loads only that portion of map data, significantly reducing calculation processing load while maintaining full map accessibility when needed
3Ease of manufacture
If divided map data pieces are stored in the first storage unit, then data organization is improved, but data management complexity increases
Solution Approach 1:
The patent introduces a map data generating unit that acts as an intermediary between the divided map data pieces stored in the first storage unit and the navigation system. This generating unit automatically manages the complexity of organizing and retrieving divided map data by generating the appropriate map data for current divided areas based on the work machine's position, thereby improving data organization while masking the underlying data management complexity from the rest of the system
Data Source
AI summary
A control system includes: a position detector detecting a position of a work machine; a non-contact sensor detecting, in non-contact manner, an object beside a travel route; a map data generator generating management map data based on detection data obtained by the position detector and detection data obtained by the non-contact sensor; a first storage storing divided map data pieces; a second storage different from the first storage; an update unit determining specific map data from among the plurality of divided map data pieces stored in the first storage based on detection data of the position detector, and cause the second storage to read the specific map data; and a position calculator calculating a position of a work machine by matching the specific map data read into the second storage with the detection data obtained by the non-contact sensor.