Vehicular Panel Controller Pinch Detection Mode Switching
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Solution Overview
Problem
Existing power window systems face issues with incomplete closure due to pinch detection functions, leading to potential rain ingress and theft risks during door trouble, requiring a method to enable complete close mode without special hardware and minimizing unnecessary pinch detection.
Innovation Solution
A vehicular open and close panel system with a controller that performs pinch detection, then switches to complete close mode upon passenger instruction, and reverts to pinch detection after closure or a predetermined time, ensuring complete closure without continuous pinch detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pinch detection function is always performed during close operation, then safety is improved by detecting pinched objects, but complete closure cannot be achieved when door sash is deformed
Solution Approach 1:
The system dynamically switches between pinch detection mode and complete close mode based on operational context. The controller changes the operational state from pinch detection to complete close mode when specific conditions are met (e.g., multiple switch operations, auto position selection), allowing the window to close completely even when deformed, while maintaining safety in normal operations
Solution Approach 2:
The system changes the detection parameter state by transitioning between two distinct operational modes: pinch detection mode (normal operation) and complete close mode (forced closure). This parameter change allows the system to adapt its behavior - in complete close mode, the controller prioritizes closure completion over pinch detection, enabling windows with deformation to close fully
2Ease of operation
If complete close mode is implemented using dedicated switch, then complete closure is achieved, but device complexity increases
Solution Approach 1:
The existing window operation switch is made multi-functional by programming it to recognize specific operational patterns (continuous holding, multiple operations, auto position) that trigger complete close mode. This eliminates the need for dedicated hardware switches while providing complete closure capability through software-based mode switching
Solution Approach 2:
The system uses the existing switch infrastructure and control unit to implement complete close mode without requiring additional dedicated components. The control unit leverages information already available from normal switch operations to determine when to activate complete close mode, making the system self-sufficient
3Reliability
If pinch detection is continuously performed, then safety is maintained, but unnecessary detection occurs during intentional complete close operations
Solution Approach 1:
The system implements periodic switching between pinch detection mode and complete close mode based on operational patterns. During normal operations, pinch detection is active; when complete close mode is triggered (after detecting specific user intentions through switch patterns), pinch detection is temporarily suspended to allow forced closure without unnecessary detection interference
Data Source
AI summary
The vehicular open and close panel system includes a drive means configured to supply power for sliding, and opening and closing a panel to open and close an opening of a vehicle body; a drive mechanism configured to operate the panel by power from the drive means; and a controller configured to control an operation of the panel, wherein the controller includes a pinch detection mode of making the panel perform a pinch elimination operation upon detecting a pinch in a close direction operation, and a complete close mode of prioritizing a close direction operation, depending on a complete close operation of a passenger, and wherein after performing the pinch detection operation by the pinch detection mode, the controller changes the close direction operation to the complete close mode until a predetermined condition is satisfied.