Vehicle Door Gesture Control via Portable Device Position Verification
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Solution Overview
Problem
Existing vehicle door control systems are prone to erroneous operation due to the inability to differentiate between user gestures and non-user movements, leading to unnecessary door activation.
Innovation Solution
A door control device that includes a position acquisition unit for wireless communication with a portable device, an operation determination unit to verify user gestures within a detection area, and a control unit to operate the doors based on the gesture content, preventing erroneous operation by setting a recognition area specific to the user's position and using camera adjustments and illumination for improved detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gesture detection system is implemented without position verification, then user convenience is improved through contactless operation, but erroneous door activation occurs due to false gesture detection
Solution Approach 1:
The patent introduces a portable device as an intermediary carrier that holds the user's biometric information. The detection device does not directly identify the user but verifies against information stored in the portable device, which acts as a trusted mediator. This resolves the contradiction by enabling contactless operation through portable device detection while preventing erroneous activation through reliable biometric verification.
Solution Approach 2:
The patent replaces the mechanical contact-based door handle operation with a wireless detection system that identifies users through their carried portable devices. This substitution enables contactless operation while improving reliability through electronic verification of portable device presence and biometric matching, eliminating false gestures that cannot physically interact with the system.
2Area of stationary object
If the detection area is expanded to cover more space, then detection coverage is improved, but false activations increase due to detection of non-user movements
Solution Approach 1:
The patent applies local quality by requiring that the portable device be detected within a specific local area (detection area) associated with the door, rather than accepting gestures from anywhere in the vehicle. The control unit checks whether the portable device's position falls within the predetermined detection area before activating the door, thereby maintaining reliable detection within the valid zone while ignoring movements outside this localized region.
Solution Approach 2:
The portable device serves as an intermediary that carries the user's identification information. Instead of directly detecting and trusting all gestures within the detection area, the system verifies the presence and identity of the user through their portable device. This intermediary verification mechanism allows the system to safely expand detection coverage while filtering out false activations from unauthorized sources.
3Ease of operation
If gesture recognition sensitivity is increased, then user convenience is improved through responsive operation, but false positives increase leading to erroneous door activation
Solution Approach 1:
The portable device acts as an intermediary verification layer between the gesture detection and door activation. Even when gesture recognition sensitivity is high and potentially detects false gestures, the system requires additional verification that a recognized portable device is present and associated with the gesturing user. This intermediary check filters out false positives while maintaining responsive operation for genuine user gestures.
Solution Approach 2:
The patent replaces the purely mechanical gesture recognition system with an electronic verification system that uses portable device detection and biometric authentication. This substitution allows for high gesture recognition sensitivity while preventing false positives through electronic verification of the user's identity and presence, eliminating the trade-off between responsiveness and accuracy.
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 system effectively prevents erroneous door operation by ensuring the portable device is present and the user is within the detection area, enhancing user convenience and reducing false activations.
Implementation Method 1
a position acquisition unit configured to acquire a position of a portable device carried by the user by wireless communication
Data Source
AI summary
An opening and closing body control device is applied to a vehicle that includes a vehicle body having an opening, an opening and closing body configured to open and close the opening, a drive unit configured to operate the opening and closing body, and a detection device configured to detect a gesture operation of a user. The opening and closing body control device includes: a position acquisition unit configured to acquire a position of a portable device carried by the user by wireless communication; an operation determination unit configured to determine whether the gesture operation is executed in a situation where the portable device is present in a detection area of the detection device; and an opening and closing body control unit configured to operate the opening and closing body based on a content of the gesture operation when it is determined that the user executes the gesture operation.