Automated Driving Control Mode Switching With Tiered Map Data
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Solution Overview
Problem
Existing automated driving systems face challenges in handling situations where map data cannot be acquired due to communication issues, and they incur high storage costs when storing map data for all road sections.
Innovation Solution
An electronic control device that includes a storage unit for basic map data, a communication unit to acquire external map data from a data center, and a processing unit to determine the control mode for automated driving based on the acquired data, position information, and basic map data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If map data of all road sections is stored in advance in the automated driving support device, then the availability of map information is improved, but device cost increases due to an increase in required storage capacity
Solution Approach 1:
The patent segments map data into two categories: basic map data stored locally in the automated driving support device, and detailed map data stored externally on the server. This segmentation allows the system to maintain essential mapping functionality with minimal local storage while accessing comprehensive map information when needed, thereby resolving the contradiction between availability and storage capacity requirements.
Solution Approach 2:
The patent introduces a communication unit as an intermediary between the automated driving support device and the server. This intermediary enables the system to access external map data resources without requiring all data to be stored locally, allowing the device to maintain reliability through external access while keeping storage capacity requirements manageable.
2Quantity of substance
If map data is acquired from a server device that performs communication via a network, then storage capacity is reduced, but processing is not possible when map data cannot be acquired due to communication situation
Solution Approach 1:
The patent applies preliminary action by storing basic map data in advance in the automated driving support device before any communication occurs. This ensures that essential mapping information is already available locally, allowing the system to maintain automated driving functionality even when communication with the server is unavailable or interrupted.
Solution Approach 2:
The patent implements local quality by ensuring that critical basic map data is stored locally in the device rather than relying entirely on external sources. This local storage of essential data ensures that the automated driving function can continue operating with adequate map information even when communication conditions are poor or unavailable.
3Quantity of substance
If basic map data is stored in the vehicle and external map data is acquired from data center, then storage costs are reduced, but communication dependency increases
Solution Approach 1:
The patent applies dynamics by creating a flexible map data acquisition system that can adaptively switch between using local basic map data and acquiring external detailed map data from the data center based on communication availability. This dynamic approach allows the system to optimize between storage reduction and communication dependency by adjusting its data source selection according to real-time conditions.
Data Source
AI summary
An electronic control device apparatus includes a storage apparatus, a communication apparatus, and a processing apparatus. The processing apparatus determines, based on the level of the shape data included in external map information acquired by the communication apparatus, one of the plurality of control modes with different control methods of the vehicle as the control mode of the autonomous driving control.