Vehicle Lock System Visual Feedback for Induction Verification
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Solution Overview
Problem
Users find it difficult to recognize the timing to approach the vehicle with their mobile device for verification using electromagnetic induction, as the switching from RF signal verification to electromagnetic induction verification is not clearly indicated in conventional lock-unlock systems.
Innovation Solution
Incorporating an indication unit, such as an illumination unit, in the lock-unlock system that changes light emission aspects to visually signal the user when switching from RF signal verification to electromagnetic induction verification, allowing easier recognition of the necessary approach timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If automatic switching from RF signal verification to electromagnetic induction verification is implemented, then the system can handle cases where the mobile terminal battery is dead, but the user cannot recognize the switching timing
Solution Approach 1:
The system provides visual feedback through the indication unit (light emitter) to inform the user about the current verification mode. When switching from RF signal verification to electromagnetic induction verification, the indication unit activates to signal the user that the mobile terminal should be approached to the in-vehicle device, ensuring the user is aware of the mode change without compromising the automatic switching capability
2Adaptability or versatility
If electromagnetic induction verification is used, then verification can occur with dead battery, but the communication range becomes shorter
Solution Approach 1:
The system dynamically adjusts the verification mode based on the mobile terminal's battery status. When the battery is functional, RF signal verification with longer range is used. When the battery is dead, the system switches to electromagnetic induction verification with shorter range, and the indication unit guides the user to bring the mobile terminal closer to ensure successful verification
3Length of stationary object
If RF signal verification is used, then communication range is longer, but verification fails when battery is dead
Solution Approach 1:
The system changes the verification parameter (communication mode) based on battery status. When the battery is dead, it switches from RF signal verification to electromagnetic induction verification, which can operate without battery power. The indication unit signals this parameter change to the user, ensuring they understand the mobile terminal needs to be approached closer for successful verification
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
The user can clearly recognize the switching to electromagnetic induction verification, facilitating the correct timing for approaching the vehicle, thereby enhancing the user experience and preventing potential locking or unlocking failures.
Implementation Method 1
receiving power supplied by electromagnetic induction induced by a second request signal transmitted from an antenna of the in-vehicle device
Data Source
AI summary
A lock-unlock system for a vehicle includes a mobile terminal and an in-vehicle device. The mobile terminal includes a unit to return a first response signal responding to a first request signal, and a unit to return a second response signal responding to a second request signal in response to receiving power supplied by electromagnetic induction induced by the second request signal. The in-vehicle device includes a unit to transmit the first request signal, to execute first verification control for verifying an identification code in the first response signal; a unit to transmit the second request signal, to execute second verification control for verifying an identification code in the second response signal; and a unit to indicate switching from the first verification control to the second verification control if a condition for the switching is satisfied after the first verification control has been started, to the user.