Vehicle Backup Power Diagnosis Triggered Before Entry
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Solution Overview
Problem
Existing power supply control systems for vehicles, particularly those with backup power supplies, cause inconvenience to users due to the time-consuming diagnosis of backup power supply functionality, which delays the immediate availability of autonomous driving and steer-by-wire systems after vehicle startup.
Innovation Solution
A power supply control device that initiates backup power supply diagnosis before the user enters the vehicle, using a controller to detect triggers such as approaching the vehicle or unlocking the door, allowing the diagnosis to complete before the vehicle is started, thereby ensuring the backup power supply is ready for immediate use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the backup power supply diagnosis is performed after vehicle startup, then the diagnosis can be completed with accurate real-time data, but the user convenience decreases due to delays in autonomous driving and steer-by-wire system availability
Solution Approach 1:
The diagnosis is performed in advance before vehicle startup by detecting events such as the user approaching the vehicle or the door being unlocked. This preliminary action ensures the diagnosis is completed before the user needs to use the autonomous driving or steer-by-wire systems, eliminating delays while maintaining diagnostic accuracy through pre-startup measurement conditions
2Reliability
If the backup power supply diagnosis is performed at vehicle startup, then the system ensures safety by verifying backup functionality, but the autonomous driving and steer-by-wire systems cannot be used until diagnosis completion
Solution Approach 1:
The backup power supply diagnosis is executed before vehicle startup by detecting trigger events such as user approach or door unlock. This timing allows the diagnosis to complete in advance, ensuring system safety through verified backup functionality while preventing time loss by making autonomous driving and steer-by-wire systems immediately available upon startup
3Power
If the diagnosis is performed after the user gets in the vehicle, then the diagnostic process can utilize full system power, but the user experiences inconvenience due to delayed system availability
Solution Approach 1:
The diagnosis is performed before the user enters the vehicle by detecting events such as user approach or door unlock. This preliminary timing provides sufficient power for complete diagnostic testing while preventing user inconvenience by ensuring the backup power supply is verified before the user needs to use the vehicle systems
Data Source
AI summary
A power supply control device includes: a controller configured to perform a diagnosis of a degree of deterioration of a backup power supply that supplies electric power to a load of a vehicle when a main power supply that supplies electric power to the load fails. The controller is configured to start the diagnosis before a user gets in the vehicle, when detecting an occurrence of an event indicating that the user is to get in the vehicle.