Automatic Traveling Control System Temporary Road Updates
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Solution Overview
Problem
Existing automatic traveling control systems face high communication costs and reduced update system capability due to frequent updates of high-precision maps, especially for trivial road changes, which lead to excessive data transfer and server load.
Innovation Solution
Implementing a system that only updates the road structure map when permanent changes occur, limiting automatic driving in sections with temporary changes and releasing these limitations after the changes are confirmed to be temporary, thereby reducing unnecessary data transfer and server load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the high-precision map is frequently updated to include road construction information, then the map accuracy is improved, but the communication costs and server load increase excessively
Solution Approach 1:
The patent extracts and separates temporary road construction information from permanent map updates. The system identifies and isolates temporary changes (roadworks, temporary restrictions) from permanent road structure changes, processing only permanent changes as full map updates while handling temporary changes through separate restriction information. This extraction principle reduces unnecessary data transmission by excluding temporary changes from the high-precision map update stream.
Solution Approach 2:
The patent segments road structure changes into two distinct categories: permanent changes and temporary changes. By dividing the update process into separate handling mechanisms - full map updates for permanent changes and restriction information notifications for temporary changes - the system optimizes communication efficiency. This segmentation allows the high-precision map to be updated only when necessary, reducing communication overhead while maintaining accuracy for permanent infrastructure changes.
2Reliability
If the high-precision map is frequently updated, then the map information is kept current, but the server capability and update system performance are reduced
Solution Approach 1:
The system extracts temporary road construction information from the main map update process, handling it through a separate restriction information notification mechanism. This extraction prevents temporary changes from triggering full map update sequences, thereby preserving server capability and update system performance while still maintaining information currency through targeted updates for permanent changes only.
Solution Approach 2:
By segmenting change information into permanent and temporary categories, the system processes only permanent changes through the resource-intensive full map update pathway. Temporary changes are handled through lightweight restriction notifications, maintaining map information currency for permanent infrastructure while preserving update system productivity by avoiding redundant processing of temporary constructions.
3Loss of information
If the road structure map is updated for every roadwork, then all road changes are captured, but unnecessary data transfer occurs for trivial roadworks
Solution Approach 1:
The patent extracts temporary road construction information from the main map update data stream and processes it separately through restriction information notifications. This extraction eliminates unnecessary data transfer for trivial roadworks while maintaining completeness of road change information by ensuring temporary restrictions are still communicated through the appropriate channel, reducing data volume without losing information completeness.
Solution Approach 2:
The system segments road change information into permanent infrastructure changes and temporary roadworks. Permanent changes trigger full map updates with complete data transfer, while temporary roadworks are handled through compact restriction information notifications. This segmentation maintains information completeness for all road changes while significantly reducing data transfer volume by avoiding redundant transmission of temporary construction data.
Data Source
AI summary
An automatic traveling control system includes a vehicle control device configured to control an automatic traveling of a vehicle on the basis of a road structure map stored in a storage device, a reception device configured to receive change information of the road structure map from an outside, and an update device configured to update the road structure map on the basis of the change information. In a case where the change information is information indicating a temporary change of a predetermined section included in the road structure map, the road structure map is not updated and the automatic traveling of the vehicle is limited in the predetermined section.