Vehicle Wireless LAN Connection Control for Power Efficiency
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Solution Overview
Problem
Vehicles consuming excessive electric power due to frequent connections to wireless LANs for software updates, even when updates are not executable or not requested, leading to unnecessary power consumption and potential incomplete updates.
Innovation Solution
Implementing a processor-based system in vehicles to determine if software updates are in an executable state before connecting to a wireless LAN, connecting only when conditions are met to ensure power efficiency and complete updates, and allowing connections regardless of executable state when updates are not requested or for urgent categories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle automatically connects to the wireless LAN every time it is located at a connection point, then the software update function is improved, but the electric power consumption increases
Solution Approach 1:
The system performs preliminary checks to determine whether a software update is requested and whether the update is in an executable state before connecting to the wireless LAN. This preliminary action prevents unnecessary connections and reduces power consumption while ensuring updates are performed when needed.
Solution Approach 2:
The connection behavior is dynamically adjusted based on the state of software updates. The system changes the connection parameter (whether to connect) according to the update state (requested/not requested, executable/not executable), optimizing power consumption while maintaining update reliability.
2Reliability
If the vehicle connects to the wireless LAN to download update data, then the software is kept up-to-date, but unnecessary connections occur when updates are not executable or not requested
Solution Approach 1:
The system checks the software update state (whether an update is requested and whether it is in an executable state) before initiating a wireless LAN connection. This preliminary verification prevents unnecessary connections when updates are not needed or cannot be executed, reducing energy loss.
Solution Approach 2:
The system uses feedback from the software update management state to control connection behavior. By monitoring whether updates are requested and executable, the system adjusts connection decisions accordingly, avoiding unnecessary power consumption while maintaining updated software.
3Ease of operation
If the vehicle connects to the wireless LAN without checking update executability, then connection simplicity is maintained, but incomplete updates may occur
Solution Approach 1:
The system performs preliminary determination of update executability before connecting to the wireless LAN. This preliminary check ensures that connections are only made when updates can be successfully completed, preventing incomplete updates while maintaining operational simplicity through automated decision-making.
Solution Approach 2:
The system automatically determines whether to connect based on the software update state without requiring user intervention. This self-service approach maintains connection simplicity while ensuring reliable update completion through automated executability checks.
Data Source
AI summary
A vehicle configured to obtain update data via a wireless LAN and updates software of an in-vehicle device using the update data includes one or more processors. The one or more processors are configured to determine whether an update of the software is in an executable state in a situation where the update of the software is requested and the vehicle is located in a position where the vehicle is connectable to the wireless LAN. The one or more processors are configured to connect the vehicle to the wireless LAN on a condition that the one or more processors determine that the update of the software is in the executable state.