Vehicle Window Synchronization via Adaptive Speed Control
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Solution Overview
Problem
Vehicle windows often close or open asynchronously due to differences in activation timing and initial positions, resulting in unpleasant and loud thuds, which existing systems fail to synchronize effectively.
Innovation Solution
A system comprising a window control unit connected to actuators and sensors that adjusts the closing or opening rates of multiple windows to ensure simultaneous movement, using a standard rate and adjusting it when a threshold time or position difference is detected to synchronize the windows' positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple windows are closed using standard power window switches, then the windows can be operated independently and quickly, but the windows close at different times producing loud unpleasant thuds
Solution Approach 1:
The system merges the closing operations of multiple windows by synchronizing their movement. When multiple window switches are activated within a threshold period, the control unit coordinates the actuators to close all windows simultaneously, combining what would otherwise be separate asynchronous operations into a unified synchronized action.
Solution Approach 2:
The system dynamically adjusts the closing rate of individual windows based on real-time position feedback. The control unit modifies the speed of each actuator during the closing process to ensure all windows reach their closed positions at the same moment, transforming fixed-speed operation into adaptive variable-speed control.
2Ease of operation
If windows are closed at different times due to slight switch activation differences, then independent window control is maintained, but synchronization is lost and thuds occur
Solution Approach 1:
The system performs preliminary detection of switch activation patterns before executing the closing operation. By monitoring which switches are activated and within what time window, the control unit prepares a synchronized closing sequence in advance, ensuring precision is maintained while preserving the simplicity of independent switch operation.
Solution Approach 2:
The system continuously monitors the position of each window during closing and uses this feedback to adjust actuator speeds in real-time. This closed-loop control ensures that even with slight variations in switch activation timing, all windows achieve synchronized closing positions with high precision.
3Ease of operation
If window switches are located close to each other, then easy access for the driver is achieved, but accidental simultaneous activation of multiple switches occurs
Solution Approach 1:
The system converts the potential harm of accidental simultaneous switch activation into a beneficial synchronized closing feature. Instead of treating multiple switch activations as an error condition to be prevented, the system embraces it as the trigger for synchronized operation, turning a design challenge into a useful functionality.
Solution Approach 2:
The system dynamically responds to switch activation patterns by detecting when multiple switches are activated within a threshold period and automatically initiating synchronized closing mode. This adaptive behavior allows the system to handle both intentional and accidental simultaneous activations gracefully, maintaining ease of operation while preventing harmful thuds.
Data Source
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AI summary
A system for automatically synchronizing window openings and closings of multiple windows of a vehicle. The system includes a first actuator and a second actuator configured to move a first window and a second window to respective closed positions. The system includes a window control unit configured to receive, at a first time, an indication to close the first window at a first closing rate. The window control unit is configured to receive, at a second time, an indication to close the second window at a second closing rate. The window control unit is configured to adjust at least one of the first closing rate or the second closing rate, from a standard rate to an adjusted rate, when the first time and the second time are within a threshold time, such that the first window and the second window achieve their respective closed positions simultaneously.