Vehicle Window UWB Object Detection for Anti-Trap Closing
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Solution Overview
Problem
Existing anti-trap protection systems for electric window lifters in transportation vehicles are limited in detecting instances of trapping, especially with convexly shaped windowpanes, leading to potential hazards.
Innovation Solution
A transportation vehicle equipped with an ultra-wideband (UWB) system using channel impulse response (CIR) measurements to detect objects in the collision region between the windowpane and the vehicle door, thereby preventing automatic window adjustment and potentially reversing the movement to avoid trapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If counterforce detection is used for anti-trap protection, then trapping can be detected in many cases, but trapping instances with convexly shaped windowpanes cannot be reliably detected
Solution Approach 1:
The patent replaces the mechanical counterforce detection system with an optical detection system using a camera and image processing. The camera captures images of the windowpane area, and software algorithms analyze these images to detect objects or abnormal forces during window closing, providing reliable trapping detection across various windowpane shapes including convex designs.
Solution Approach 2:
The patent introduces an image processing system as an intermediary between the window closing mechanism and the control system. The camera and software act as mediators that translate visual information about the windowpane area into actionable data for determining whether trapping has occurred, enabling adaptable detection across different window designs.
2Object-affected harmful factors
If manual window closing is required, then trapping hazards are eliminated, but the convenience of automatic window adjustment is lost
Solution Approach 1:
The patent implements preliminary detection of potential trapping conditions before the window completes its closing action. The camera system continuously monitors the windowpane area during the closing process, and if an object is detected, the system automatically interrupts the closing operation, preventing trapping while maintaining automatic operation convenience.
Solution Approach 2:
The patent establishes a feedback loop where the camera system continuously provides information about the windowpane area to the control system during automatic closing operation. Based on this real-time feedback, the system can automatically adjust or interrupt the closing action to prevent trapping, thus maintaining both safety and convenience.
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 UWB system effectively reduces the occurrence of instances of trapping by reliably detecting objects in the collision region before the window closes, preventing potential hazards and enhancing user safety.
Implementation Method 1
an ultra-wideband (UWB) system having a UWB transceiver and having a first and having a second antenna, each of which is configured for sending and receiving UWB pulses
Data Source
AI summary
A transportation vehicle having an actuator for automatically adjusting a windowpane and/or a sliding roof of the transportation vehicle; a UWB system having a UWB transceiver and a first and a second antenna, each of which sends and receives UWB pulses; and a control device connected to the UWB system and the actuator to carry out a method based on channel impulse response measurements for detecting objects in a collision region by using the first antenna and the second antenna, and to send a signal that is based on a result of the detection method to interrupt an automatic adjustment of a windowpane and/or a sliding roof of the transportation vehicle to the actuator. Also disclosed is a method and communication system for a transportation vehicle.