Autonomous Driving Control Unit Location Accuracy
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Solution Overview
Problem
Autonomous driving systems face challenges in accurately determining vehicle location and managing external information, leading to inefficiencies in navigation and operation, particularly when transitioning between autonomous and manual modes.
Innovation Solution
An autonomous driving system that includes a location unit for determining the vehicle's current location using GNSS signals and cellular corrections, coupled with a database storing mapping information, allowing the control unit to generate autonomous driving commands based on precise location data and enabling/disabling autonomous functions accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If autonomous driving systems continuously process external information from GPS satellites and cellular networks, then navigation accuracy is improved, but processing burden and system complexity increase
Solution Approach 1:
The system pre-determines whether the vehicle is located within a mapped area before initiating continuous processing of external GPS and cellular information. This preliminary location assessment using stored mapping information prevents unnecessary continuous processing when autonomous driving is unavailable, reducing processing burden while maintaining navigation accuracy when needed
Solution Approach 2:
The system implements selective processing by performing location determination against mapping information only when necessary to assess autonomous driving availability. This partial action approach processes external information continuously only when the vehicle is within a mapped area, rather than continuously everywhere, optimizing the balance between navigation accuracy and processing burden
2Measurement precision
If the system determines vehicle location using multiple external sources (GPS satellites and cellular networks), then location accuracy is improved, but loss of time in processing and managing various information types increases
Solution Approach 1:
The system performs a preliminary determination of whether the vehicle is within a mapped area using stored mapping information before initiating time-consuming processing of external GPS and cellular network information. This preliminary check prevents unnecessary processing time when autonomous driving functions are unavailable, while still enabling accurate location determination when needed
Solution Approach 2:
The system uses internally stored mapping information to self-determine whether autonomous driving is available, reducing reliance on continuous external information processing. This self-service approach using pre-stored data minimizes processing time while maintaining location accuracy for availability determination
Data Source
AI summary
An autonomous driving system for a vehicle is provided. The system includes a location unit configured to determine a current location of the vehicle; a database storing mapping information; and a control unit coupled to the location unit and the database, the control unit configured to selectively generate autonomous driving commands for the current location in view of the mapping information.