Vehicle Door Speed Control via User Force Detection
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Solution Overview
Problem
Vehicles with automatic door systems face issues where doors may not shut tightly due to insufficient force, leading to potential accidents, or shut too forcefully, causing discomfort, and existing systems lack control over opening and shutting speeds based on user input.
Innovation Solution
A door operating apparatus with a power member, detector, controller, and driver that adjusts the opening and shutting speed of vehicle doors based on user-applied force or remote control input, using hall sensors and communication units to determine and control the speed of door operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the force to shut the door is increased to ensure tight closure, then the door shuts tightly improving safety, but the noise and impact increase causing discomfort
Solution Approach 1:
The door operating apparatus dynamically adjusts the shutting speed based on detected user force magnitude. When greater user force is detected, the system increases the shutting speed to ensure tight closure; when lesser force is detected, it reduces speed to minimize noise and impact. This dynamic speed adjustment resolves the contradiction between reliable closure and harmful noise/impact.
Solution Approach 2:
The system changes the operational parameter (shutting speed) based on detected force conditions. The controller receives force magnitude information from the detector and adjusts the power member's driving speed accordingly, transforming a static door closing mechanism into one with variable speed control to balance closure reliability and comfort.
2Object-affected harmful factors
If the door shutting force is decreased to reduce noise, then comfort is improved, but the door may not shut tightly reducing safety
Solution Approach 1:
The system dynamically adapts the shutting speed to match user force input. When the detector identifies strong user force, the controller increases power member speed to guarantee tight closure. When weak force is detected, it decreases speed to reduce noise. This dynamic response ensures both comfort and safety are maintained based on actual operating conditions.
Solution Approach 2:
The detector provides feedback about user force magnitude to the controller, which then adjusts the shutting speed accordingly. This closed-loop feedback mechanism allows the system to respond appropriately to varying user inputs, ensuring the door shuts tightly when needed while minimizing noise during gentle closing operations.
3Productivity
If a fixed high speed is used for door operation, then productivity is improved, but the system cannot adapt to different user forces reducing ease of operation
Solution Approach 1:
The door operating apparatus transitions from fixed-speed operation to dynamic speed control. The power member's driving speed is continuously adjusted based on real-time detection of user force magnitude, allowing the system to maintain high productivity when needed while providing users with flexible control adapted to their specific force input.
Solution Approach 2:
The system changes the operational speed parameter based on detected force conditions rather than maintaining a fixed speed. This parameter adaptation enables the door to operate efficiently at higher speeds when user force warrants it, while automatically reducing speed for gentler operations, thereby balancing productivity and ease of operation.
4Reliability
If the door opening force is increased to ensure complete opening, then reliability is improved, but the system cannot respond to user intent reducing ease of operation
Solution Approach 1:
The detector provides feedback on the magnitude of user force applied to open the door. The controller uses this feedback information to adjust the power member's driving speed, ensuring the door opens completely when sufficient force is applied while responding appropriately to lighter user inputs, thereby maintaining both reliability and ease of operation.
Solution Approach 2:
The system adjusts the door opening speed parameter based on detected user force magnitude. When stronger force is detected indicating firm user intent, the system increases opening speed to ensure complete and reliable opening. When lighter force is detected, it modulates speed to match user intent, providing ease of operation while maintaining reliability.
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
Ensures doors open and shut at user-desired speeds, reducing noise and improving safety and user satisfaction by providing controlled and efficient door operation.
Implementation Method 1
The detector comprises a hall sensor arranged on one side of the power member, for outputting a signal corresponding to a change in position of the power member
Data Source
AI summary
A door operation apparatus for a vehicle is provided to open or shut a door at a speed corresponding to a user's force or information selected by the user. In particular, the door operating apparatus installed in a body to open and shut an internal room of the body includes: a power member connected to the door for applying a moving force to the door; a detector for detecting a force applied by the user to the door; a controller for determining an open and shut speed corresponding to the detected force and controlling the power member to be driven to open and shut the door at the determined open and shut speed; and a driver for driving the power member based on a command from the controller.