Vehicle Bluetooth Connection Control for Automatic Reconnection
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Solution Overview
Problem
Users face inconvenience and increased time when restarting vehicle control programs like Android Auto or Carplay, as they need to reset Bluetooth connections due to the deletion of head device information from pairing lists after shutting down, leading to unnecessary Bluetooth pairing processes.
Innovation Solution
A connection control method and system that maintains a Bluetooth connection between user equipment and a head device even after the vehicle is turned off, recognizing when the head device is shut down and releasing the connection accordingly, allowing automatic reconnection without manual pairing when the vehicle is restarted within a predetermined time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Bluetooth connection is released after starting off the vehicle, then the Bluetooth connection is properly managed during vehicle shutdown, but the user needs to manually reset Bluetooth when restarting, increasing operation complexity and time
Solution Approach 1:
The system performs preliminary actions by maintaining the Bluetooth connection state in memory before the vehicle is completely shut down. When the vehicle is restarted, the system proactively restores the Bluetooth connection using the preserved pairing information, preventing the need for manual re-pairing operations by the user.
Solution Approach 2:
The Bluetooth connection management system performs self-service by automatically detecting when the vehicle is restarted and autonomously re-establishing the Bluetooth connection using stored pairing credentials. This eliminates the need for user intervention in the Bluetooth pairing process, making the system serve itself rather than requiring manual operation.
2Loss of energy
If the Bluetooth connection is released after starting off, then power is conserved during vehicle shutdown, but the pairing information is deleted from the user equipment, requiring time-consuming re-pairing
Solution Approach 1:
The system extracts and separates the Bluetooth pairing information from the active Bluetooth connection. The pairing credentials are extracted and stored in persistent memory or registered with the head device, allowing the actual Bluetooth connection to be released for power savings while the pairing information remains intact for rapid reconnection upon vehicle restart.
Solution Approach 2:
The system performs preliminary action by preserving the pairing information in advance before shutdown. When the vehicle restarts, the pre-preserved pairing data enables immediate reconnection without requiring the time-consuming process of searching for and pairing with the head device again.
3Productivity
If the USB connection is kept after starting off but Bluetooth is released, then USB data communication is maintained, but Bluetooth requires manual resetting due to deletion from pairing list
Solution Approach 1:
The system performs preliminary action by maintaining the Bluetooth pairing registration in advance with the head device. Even though the active Bluetooth connection is released after starting off, the pre-established pairing relationship remains valid, enabling automatic reconnection when the vehicle restarts without requiring manual Bluetooth setup.
4Loss of substance
If the head device information is deleted from pairing list after shutdown, then memory is freed and connection is properly terminated, but unnecessary Bluetooth pairing time is increased during restart
Solution Approach 1:
The system extracts the pairing information from the active connection state and stores it in persistent memory or registers it with the head device. This allows the Bluetooth connection to be fully terminated and memory to be freed, while the extracted pairing credentials remain available for rapid reconnection without occupying active connection resources.
Data Source
AI summary
Disclosed herein are a connection control method for a vehicle control program of a vehicle and a head unit system configured for conveniently using the vehicle control program and Bluetooth communications without again performing Bluetooth pairing when a user performs starting off and then starting on during the use of the vehicle control program.