Vehicle Door Lock Control Using Approach Movement Thresholds
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Solution Overview
Problem
Existing door lock control systems experience unnecessary unlocking, leading to increased power consumption due to unintentional activation by users who do not intend to ride the vehicle.
Innovation Solution
A door lock control apparatus that distinguishes between users intending to ride and those not intending to ride by setting distinct regions and monitoring movement data of a portable device, preventing unlocking when certain movement thresholds are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door lock control system permits unlocking when a portable device enters a predetermined distance range, then the ease of operation is improved, but unnecessary unlocking occurs leading to increased power consumption
Solution Approach 1:
The space around the vehicle is segmented into multiple regions based on distance thresholds. The first region is set at a first distance (predetermined distance range) and the second region is set at a second distance (shorter distance). By dividing the approach path into segments, the system can apply different control logic to each segment, preventing unnecessary unlocking while maintaining ease of operation for legitimate users.
Solution Approach 2:
The door lock control system dynamically adjusts its response based on the portable device's movement characteristics. Instead of a static distance-based trigger, the system monitors movement amount and movement time as the device approaches. This dynamic adaptation allows the system to distinguish between intentional approach (legitimate user) and accidental/passive approach (unintentional user), thereby preventing unnecessary unlocking and reducing power consumption.
2Use of energy by moving object
If the system monitors movement data to distinguish users, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The portable device itself provides the movement data that the vehicle's door lock control apparatus monitors. The communication between the portable device and vehicle already establishes a data exchange channel, and the movement information is obtained as part of this existing communication framework. This self-service approach allows the system to gather necessary movement data without adding separate sensing hardware or complex monitoring infrastructure to the vehicle side.
Data Source
AI summary
A door lock control apparatus configured to be applied to a vehicle includes a communicator and a processor. When detecting that a portable device has entered a first region set to be greater than or equal to a second distance and less than a first distance, the processor performs authentication between the portable device and the vehicle. When detecting that the portable device has entered a second region set to be less than the second distance from the vehicle, the processor refrains from permitting unlocking of the door lock mechanism even when the authentication is established, provided that one or both of a movement amount and a movement time of the portable device in the first region from when the portable device has entered the first region until when the portable device has entered the second region are greater than or equal to a respective predetermined threshold.