Vehicle Door Handle Gesture Sensing to Reduce False Activations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle door handle systems rely on simple touch or mechanical releases for unlocking and opening, which can lead to false activations and lack robustness in determining user intent, limiting the ability to control other vehicle functions efficiently.
Innovation Solution
A vehicular sensing system with a sensor element and LED disposed behind a panel in the door handle, capable of detecting various hand gestures such as location, movement, and linger time, allowing for the control of multiple vehicle functions like locking, unlocking, window operation, and HVAC interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If simple touch or mechanical release mechanisms are used for door handle operation, then the device complexity is reduced and ease of manufacture is improved, but false activations occur and user intent determination becomes unreliable
Solution Approach 1:
The sensing system is divided into multiple independent sensor elements (capacitive, optical, thermal) that each detect specific aspects of user interaction. This segmentation allows the system to analyze different parameters separately and combine them for more accurate intent determination, reducing false activations while maintaining manageable complexity through modular design
Solution Approach 2:
The door handle sensing system is designed to perform multiple functions: detecting touch, gesture, proximity, and thermal signatures. This multi-functionality allows a single integrated system to accurately determine user intent through multiple detection modes, improving reliability without requiring separate systems for each function
2Adaptability or versatility
If multiple sensor elements are integrated into the door handle, then gesture recognition accuracy and user intent determination are improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Multiple sensor elements (capacitive, optical, thermal) are merged into a single integrated sensing system within the door handle assembly. This combining approach enables comprehensive gesture recognition and user intent determination while simplifying manufacturing by reducing the number of separate components that need to be assembled, as all sensors are coordinated through a unified control system
3Ease of operation
If non-contact gesture detection is implemented, then hands-free operation and hygiene are improved, but the measurement precision requirements and system complexity increase
Solution Approach 1:
Optical fields and electromagnetic radiation serve as intermediaries between the user's hand gestures and the sensor elements. The optical sensors detect reflections and movements of light, while thermal sensors detect infrared radiation from the hand, enabling accurate non-contact gesture detection without requiring direct physical contact, thus maintaining hands-free operation capability with sufficient measurement precision
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
Enables intuitive, non-contact gesture recognition for controlling vehicle functions, reducing false activations and enhancing user intent determination, providing a hands-free method for accessing and managing vehicle features.
Implementation Method 1
a sensor element and at least one light emitting diode (LED) disposed at a circuit board... when the sensor element and the at least one LED are powered, determines a user gesture corresponding to a particular movement of a hand of a user relative to the sensing device
Implementation Method 2
at least one light emitting diode (LED) disposed at a circuit board... when the sensor element and the at least one LED are powered
Data Source
AI summary
A vehicular sensing system includes a sensing device disposed at a vehicle door of a vehicle. The sensing device includes a sensor element and at least one light emitting diode (LED) disposed at a circuit board. The sensing device is disposed behind a panel of the vehicle door of the vehicle, with the sensor element and the at least one LED being disposed at a light transmitting portion of the panel of the vehicle. The vehicular sensing system, responsive to processing at the controller of captured sensor data when the sensor element and the at least one LED are powered, determines a user input corresponding to a particular location and movement of a user's hand at or near the sensing device. The vehicular sensing system, responsive to determining a particular user input of a plurality of user inputs, provides an output.