High-Precision Map Updating for New Branching Route Detection
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Solution Overview
Problem
Conventional map information systems lack the ability to accurately and efficiently update high-precision maps with information on newly established branching routes, which is crucial for autonomous vehicle navigation, as they rely on incomplete or incorrect data from onboard sensors.
Innovation Solution
A map information system that includes a vehicle equipped with a turn signal lever sensor, external environment sensor, and a controller connected to the map server, which detects turn signal operations and updates the high-precision map by comparing sensor data with stored map information to determine the establishment of new branching routes, ensuring consistency across multiple vehicles and improving data accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the map server updates the high-precision map based on sensor data from vehicles, then the map information can be kept current, but incorrect or incomplete data may be registered leading to reduced accuracy
Solution Approach 1:
The map server implements a feedback mechanism by comparing newly acquired map data with previously stored map information. When discrepancies are detected (such as new branching routes), the system evaluates multiple data sources and confirmation criteria before updating the map, ensuring that only verified correct information is registered.
Solution Approach 2:
Before registering new map data, the system performs preliminary verification by checking multiple conditions: comparing with existing map data, verifying through multiple vehicle reports, and confirming through cross-validation. This preliminary action prevents incorrect data from being registered in the first place.
2Measurement precision
If the map server uses turn signal operation data to detect branching routes, then detection accuracy improves, but the system complexity increases due to multiple sensor integrations
Solution Approach 1:
The map server is designed to handle multiple types of vehicle data (turn signal operations, position information, sensor data) through a unified processing framework. This multi-functional approach allows the system to use various data sources for the same purpose of detecting branching routes, improving precision without proportionally increasing complexity.
Solution Approach 2:
The system merges multiple data sources (turn signal lever sensor, external environment sensor, own vehicle position identifying device) into a single integrated map update process. By combining these inputs through centralized processing at the map server, the system achieves high detection accuracy while managing complexity through unified architecture.
3Reliability
If the system verifies travel histories of multiple vehicles to confirm branching routes, then map update reliability improves, but the time required for verification increases
Solution Approach 1:
The system performs verification on a partial basis rather than requiring complete verification of all possible data. When a branching route is detected, the system verifies through a sufficient number of vehicle reports (excessive action) to ensure reliability, but does not require exhaustive verification of every possible data point, thus balancing reliability with time efficiency.
4Reliability
If the map server continuously monitors vehicle data for map updates, then the map remains current, but energy consumption increases
Solution Approach 1:
Instead of continuous monitoring, the map server implements periodic action by processing map update data at specific intervals or triggered events (such as when a vehicle completes a journey or when multiple vehicles report the same branching route). This approach keeps the map current while significantly reducing energy consumption compared to continuous monitoring.
Data Source
AI summary
A map information system includes: at least one vehicle; and a map server configured to communicate with the vehicle and store a high-precision map, wherein the vehicle includes: a turn signal lever sensor configured to detect a turn signal operation by a driver; an external environment sensor configured to acquire information on surroundings of the vehicle; an own vehicle position identifying device configured to identify a position of the vehicle; and a controller configured to transmit, to the map server, the turn signal operation, the position of the vehicle, and the information on the surroundings, and the map server updates the high-precision map based on the information acquired by the external environment sensor when comparing the high-precision map stored in the map server with the turn signal operation and determining that a branching route is present.