Vehicle Map Updating via Driving State Transitions

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Solution Overview

Problem

Conventional technologies for updating map information in vehicle control systems do not adequately address the timing of updates, leading to inefficiencies in maintaining accurate and relevant map data for automated driving systems.

Innovation Solution

A vehicle control device with a recognition unit, driving control unit, and map updating unit that switches between driving states based on predetermined conditions, allowing for timely updates of intrinsic map information by reflecting recognition results from the vehicle's environment, and communicating with a map updating server to share and update map data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If map information is updated continuously, then the accuracy and relevance of map data is improved, but the loss of time and energy consumption increases

Engineering Contradiction:
Improvemap information accuracyVSAvoidupdate time consumption
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system performs map information updates periodically based on driving state transitions rather than continuously. The map updating unit is activated at specific intervals when the vehicle transitions between automated and manual driving states, ensuring map data remains current without requiring constant updating operations.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system proactively updates map information at predetermined moments before critical changes occur in the driving environment. By updating map data when transitioning from automated to manual driving state, the system prepares the map information in advance for potential manual intervention scenarios, ensuring accuracy is maintained without waiting for actual problems to arise.

Inventive Principle:
Principle #10Preliminary action

2Loss of information

If map information is updated frequently, then the relevance of map data is improved, but the use of energy increases

Engineering Contradiction:
Improvemap data relevanceVSAvoidenergy consumption
Core Design Contradiction:
Loss of informationVSUse of energy by moving object

Solution Approach 1:

The system employs periodic updating triggered by driving state transitions rather than frequent continuous updates. Energy is consumed only when the vehicle transitions between automated and manual driving states, significantly reducing overall energy expenditure while maintaining map information relevance through strategically timed updates.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system automatically determines when map updates are necessary based on driving state transitions without requiring external triggers or manual intervention. The map updating unit autonomously activates when the driving control unit transitions states, allowing the system to self-regulate energy consumption while maintaining information relevance.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If map information is updated at all times, then the accuracy is improved, but the device complexity increases

Engineering Contradiction:
Improvemap information accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system simplifies the overall architecture by implementing periodic updates only at driving state transitions rather than maintaining continuous update mechanisms. This approach reduces the complexity of the map updating unit and its interactions with other system components while preserving map information accuracy through targeted updates.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system establishes a predetermined update protocol triggered by driving state transitions, eliminating the need for complex real-time decision-making algorithms. By pre-defining update conditions based on state transitions, the system reduces computational complexity while ensuring map information remains accurate for manual driving scenarios.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11447155B2Vehicle control device, map information management system, vehicle control method, and storage medium
Publication Date: 2022.09.20 HONDA MOTOR CO LTD
  • US11447155B2 patent drawing
  • US11447155B2 patent drawing
  • US11447155B2 patent drawing

AI summary

Provided herein is a vehicle control device that includes a recognition unit that recognizes a surrounding status of a vehicle and a driving control unit that controls a speed and/or a steering of the vehicle. The driving control unit performs switching to a second driving state in which a driver has a higher degree of a monitoring obligation than in a first driving state. The vehicle control device further includes a map updating unit that updates intrinsic map information on the basis of the recognition result and when switching from the first driving state to the second driving state is performed by the driving control unit.