Vehicle Door Lock Control Device Preventing Unjust Cancellation
Solution Overview
Problem
Existing vehicle door lock systems allow unjust cancellation of the double-locked state, which can lead to confinement of authorized passengers and deterioration of anti-theft properties, as unauthorized individuals can initiate engine start operations to unlock the vehicle.
Innovation Solution
A door lock control device that includes in-vehicle operation detecting means, unjust act detecting means, and locked state cancellation prohibiting means to prevent cancellation of the locked state when an unjust act is detected, ensuring the locked state is maintained even if an unauthorized person attempts to start the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the double-locked state can be cancelled by ignition operation to prevent passenger confinement, then passenger safety is improved, but anti-theft property deteriorates because unauthorized persons can also cancel the locked state
Solution Approach 1:
The system applies different quality rules to different operational contexts: legitimate ignition operations (performed by authorized persons with proper keys) are allowed to cancel the double-locked state, while unjust ignition operations (performed by unauthorized persons) are detected and blocked. This local differentiation resolves the contradiction by allowing passenger safety functionality while preventing theft.
Solution Approach 2:
The system incorporates feedback mechanisms through unjust act detecting means that continuously monitors ignition operations. When an unjust act is detected, the system provides feedback by prohibiting the locked state cancellation, thereby preventing unauthorized access while maintaining the ability to unlock for legitimate passengers.
2Reliability
If the locked state is maintained indefinitely to prevent theft, then anti-theft property is improved, but passenger convenience deteriorates because authorized passengers cannot exit the vehicle
Solution Approach 1:
The locked state is made dynamic rather than static. The system transitions between different locked states (double-locked and normally locked) based on operational conditions. When legitimate ignition operations are detected, the system dynamically switches from double-locked to normally locked state, enabling passenger exit while maintaining anti-theft protection through state transitions.
3Reliability
If regular unlocking operation is the only means to cancel double-locked state, then anti-theft property is maintained, but passenger safety deteriorates because passengers confined in the vehicle cannot exit
Solution Approach 1:
The ignition operation is given multiple functions: it serves both as a vehicle starting mechanism and as a legitimate unlocking command for double-locked states. This multi-functionality allows the same operation to provide both engine control and door unlocking capabilities, resolving the contradiction between maintaining security and enabling passenger safety.
Data Source
AI summary
A door lock control device prevents deterioration in anti-theft property of a vehicle by restricting unjust cancellation of a locked state of a door of the vehicle. In-vehicle operation detecting means detects a predetermined operation performed in a compartment of the vehicle. Locked state canceling means cancels the locked state of the door when the predetermined operation is detected by the in-vehicle operation detecting means. Unjust act detecting means detects an unjust act applied to the vehicle. Locked state cancellation prohibiting means prohibits cancellation of the locked state by the locked state canceling means after the unjust act is detected by the unjust act detecting means.