Vehicle Door Control Using User Deceleration for Intent Detection
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Solution Overview
Problem
Existing vehicle door control systems face challenges in accurately detecting a user's intention to use the vehicle, particularly when facial recognition is obstructed by items like hats or masks, leading to potential failure in opening the door.
Innovation Solution
A vehicle door control device that includes a movement speed detection unit, use intention determination unit, and target door estimation unit to detect changes in user movement speed and intent, allowing for the automatic opening of the predicted target door when an intention to use the vehicle is determined.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If face authentication is used for door lock-release, then the door can be opened when the user's face is visible, but the door cannot be opened when the face is hidden by a hat or mask
Solution Approach 1:
The system changes the detection parameter from facial features to movement speed and deceleration patterns. By monitoring the user's approach speed and deceleration behavior, the system can authenticate users regardless of whether their face is visible, thus resolving the contradiction between reliability and adaptability.
2Ease of operation
If the door is opened automatically when the user approaches, then convenience is improved, but security may be compromised without proper intent detection
Solution Approach 1:
The system uses feedback from movement speed detection to determine user intent. By continuously monitoring whether the user is decelerating (indicating intent to enter) or maintaining constant speed (passing by), the system provides appropriate feedback control - opening the door only when genuine entry intent is detected, thus balancing convenience and security.
3Measurement precision
If movement speed detection is used to determine user intent, then the system can distinguish between passing by and intending to enter, but additional detection complexity is introduced
Solution Approach 1:
The system uses movement speed as an intermediary parameter to infer user intent. Instead of directly detecting complex intent signals, the system measures the intermediate parameter of movement speed and its changes (deceleration), which serves as a reliable proxy for determining whether the user intends to enter the vehicle, thus achieving high measurement precision without excessive complexity.
Data Source
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AI summary
A vehicle door control device (1) includes: a movement speed detection unit (31H) configured to detect a movement speed of a user present around a vehicle; a use intention determination unit (31B) configured to determine whether the user has an intention to use the vehicle; a target door estimation unit (31C) configured to estimate a target door that is a door predicted to be opened by the user among doors of the vehicle based on a change in which the movement speed detected by the movement speed detection unit is decelerated; and a control unit (31D) configured to execute control for opening the door, which is the target door estimated by the target door estimation unit, when the use intention determination unit determines that the user has an intention to use the vehicle.