Vehicle Locking Control Using Dual Verification and Induction
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Solution Overview
Problem
Existing vehicle locking/unlocking systems consume excessive power when the likelihood of a user being beside the vehicle is low, as the on-vehicle apparatus continuously transmits request signals awaiting identification codes.
Innovation Solution
The system employs a dual verification control mechanism using LF and UHF wireless communications, where the first verification control is initiated upon user detection and transitions to second verification control via electromagnetic induction when the battery is likely exhausted, optimizing power usage by reducing unnecessary signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the on-vehicle apparatus continuously transmits request signals to verify identification codes, then the locking/unlocking functionality is maintained, but power consumption increases excessively
Solution Approach 1:
The system transmits request signals periodically rather than continuously, switching between first request signals (when user presence is detected) and second request signals (when user presence is not detected). This periodic transmission maintains locking/unlocking functionality while significantly reducing power consumption during periods when no user is present.
Solution Approach 2:
The system dynamically adjusts its operation mode based on detected user presence. When a user is detected beside the vehicle, the system transitions to a high-power mode with frequent first request signals for reliable verification. When no user is detected, it switches to a low-power mode with reduced second request signals, optimizing the balance between functionality and power consumption.
2Speed
If the on-vehicle apparatus uses only the first wireless communication mode for verification, then response time is fast when user is present, but the system fails when battery is exhausted
Solution Approach 1:
The system introduces a second wireless communication mode using electromagnetic induction as an intermediary mechanism. When the battery is exhausted and the portable apparatus cannot respond to first request signals, the second request signals use electromagnetic induction to power the portable apparatus and retrieve identification codes, ensuring system availability while maintaining verification capability.
Solution Approach 2:
The system changes the operational parameters of wireless communication based on battery status. When the battery is functional, it uses the first mode with standard communication parameters for fast response. When the battery is exhausted, it switches to the second mode with electromagnetic induction parameters, changing the power transfer and communication characteristics to maintain system functionality.
3Use of energy by moving object
If the system switches to electromagnetic induction mode for second verification control, then power consumption is reduced, but communication range and speed are limited
Solution Approach 1:
The system applies different communication modes to different spatial contexts. The first wireless communication mode is used when the user is in close proximity to the vehicle (fast communication needed), while the second electromagnetic induction mode is used when the user is at a distance or not present (power conservation prioritized). This local quality approach optimizes both speed and power consumption based on spatial conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces power consumption in the on-vehicle apparatus by minimizing signal transmission when a user is not likely present, thereby conserving energy without compromising locking/unlocking functionality.
Implementation Method 1
supply of power to the portable apparatus through electromagnetic induction caused by a second request signal
Data Source
AI summary
An on-vehicle apparatus start verifying a first code of a portable apparatus returned from the portable apparatus in response to a first signal from the on-vehicle apparatus unless a battery of the portable apparatus is not exhausted upon detection of a user's operation to unlock/lock a door beside a vehicle; verifies a second code of the portable apparatus returned from the portable apparatus in response to power supply to the portable apparatus through electromagnetic induction caused by a second signal from the on-vehicle apparatus; determines whether the user's operation has been continuously detected if the first code is not returned; ends the verification of the first code if there is no state where the user's operation has been continuously detected; and ends the verification of the first code and starts the verification of the second code if the user's operation has been continuously detected.