Powered Vehicle Door Gesture Access With Adaptive Opening Speed
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Solution Overview
Problem
Current motor vehicle access systems, such as passive entry systems and infrared-based hands-free systems, face limitations in accurately detecting predefined gestures for unlocking and opening vehicle closures, particularly in varying environmental conditions and user movements.
Innovation Solution
A gesture access system equipped with a wireless signal transceiver, processor, and memory that emits and detects wireless signals to determine if an object is exhibiting a predefined gesture, controlling the door opening mechanism based on object parameters like speed and distance, ensuring secure and efficient access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If passive entry systems or infrared-based hands-free systems are used for vehicle access, then automatic door unlocking and opening can be achieved, but accurate detection of predefined gestures becomes difficult in varying environmental conditions and user movements
Solution Approach 1:
The patent replaces traditional mechanical key-based entry systems and infrared-based gesture detection systems with a wireless signal transceiver system. This electronic substitution enables more accurate and reliable gesture detection by using wireless signals (such as radio frequency signals) that are less susceptible to environmental interference compared to infrared systems, thereby improving measurement precision while maintaining adaptability across varying conditions
Solution Approach 2:
The wireless signal transceiver is designed to perform multiple functions: detecting presence of objects, identifying predefined gestures, determining object parameters (speed, distance), and triggering appropriate door access responses. This multi-functional approach allows the system to adapt to various environmental conditions and user movements while maintaining accurate gesture detection, resolving the contradiction between measurement precision and environmental adaptability
2Productivity
If the door opens quickly to improve user convenience, then access efficiency increases, but safety risks arise from rapid door movement that could injure nearby objects or persons
Solution Approach 1:
The system continuously monitors object parameters including speed and distance of objects near the door using the wireless signal transceiver. This real-time feedback allows the control system to dynamically adjust the door opening speed - opening quickly when the area is clear (improving productivity) and slowing down or stopping when objects or persons are detected in the danger zone (preventing harm). This feedback mechanism resolves the contradiction between access efficiency and safety by making door speed adaptive to real-time conditions
Solution Approach 2:
The door opening speed is made dynamic rather than fixed. The system determines appropriate door speeds based on real-time detection of object parameters such as distance and speed of nearby objects. This dynamic adjustment allows the door to open at optimal speeds for efficiency when safe, and reduce speed or pause when safety concerns are detected, thereby resolving the contradiction between productivity and safety
3Ease of operation
If wireless signal transceivers are used to detect gestures from a distance, then user convenience improves, but system complexity increases due to additional components and processing requirements
Solution Approach 1:
The wireless signal transceiver serves multiple functions within a single component: it detects the presence of objects, identifies predefined gestures, determines object parameters (speed, distance), and provides data for access control decisions. This consolidation of multiple detection and measurement functions into a single multi-functional device improves ease of operation while minimizing the increase in system complexity that would result from using multiple separate components
Solution Approach 2:
The system merges the functions of presence detection, gesture recognition, and parameter measurement into an integrated wireless signal transceiver system. By combining these functions that could otherwise require separate sensors and processing units, the system achieves hands-free access convenience while controlling overall system complexity through functional integration
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 provides secure and efficient vehicle access by accurately detecting predefined gestures, ensuring the door opens at the appropriate speed and timing, enhancing user convenience and vehicle security.
Implementation Method 1
the wireless detection signals including at least one reflected wireless signal if at least one of the emitted wireless signals is reflected by an object toward and detected by the at least one wireless signal transceiver
Data Source
AI summary
A gesture access system includes at least one wireless transceiver to be mounted to a motor vehicle having a powered door, a motor responsive to motor control signals to open the power door and a processor to process signals from the wireless transceiver to determine whether an object is exhibiting a predefined gesture and, if so, to control an unlocking actuator to unlock the powered door, to then continually monitor and process signals from the wireless transceiver to determine object parameters including a speed of movement of the object away from, and a distance of the object relative to, the powered door, determine a door opening speed based on the object parameters, and control the motor control signals to open the powered door at the determined door opening speed.