Swing Door Closing Edge Projection for Passenger Detection
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Solution Overview
Problem
Existing inward pivoting doors in passenger transport vehicles lack a mechanism to detect passengers in the boarding area during closure, leading to potential harm and discomfort due to immediate re-opening when a passenger is present.
Innovation Solution
A closing edge with a projection on the wall facing the entry area, integrated into the inward swinging door, which includes a pressure sensor to detect pressure changes caused by passengers, preventing the door from closing when a passenger is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the door closes immediately when a passenger is detected in the boarding area, then the door closure speed is improved, but passenger safety deteriorates
Solution Approach 1:
The pressure sensor detects passengers in advance before the door closes, allowing the system to take preliminary action by preventing closure or triggering an alarm before the harmful event occurs
Solution Approach 2:
The pressure sensor provides continuous feedback about passenger presence in the boarding area, allowing the control system to adjust door operation based on real-time conditions and prevent closure when passengers are detected
2Object-affected harmful factors
If the door re-opens when a passenger is detected during closure, then passenger safety is improved, but the door operation reliability deteriorates
Solution Approach 1:
The pressure sensor provides feedback during the closing process to detect passengers, allowing the control system to reliably determine when to prevent or reverse closure based on actual passenger presence conditions
3Difficulty of detecting and measuring
If a pressure sensor is integrated into the closing edge, then passenger detection capability is improved, but device complexity increases
Solution Approach 1:
The pressure sensor is merged with the closing edge structure, integrating the detection function into the existing door component rather than adding a separate detection system, thereby reducing overall device complexity
Solution Approach 2:
The closing edge is given multiple functions: it maintains its primary sealing and closing function while simultaneously serving as a detection element through the integrated pressure sensor, eliminating the need for separate detection hardware
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 passenger safety by preventing the door from closing on individuals and allowing time for passengers to exit, enhancing safety in public transport without altering the external appearance of the door.
Implementation Method 1
at least one pressure sensor is provided, which is operatively connected to the at least one air chamber in such a way that a pressure change in the air chamber can be detected by the pressure sensor
Data Source
Figure 1
AI summary
The closing edge (1) has an air chamber (11,23,29), a surrounding wall (9), a sealing lip (7) for a tight closure of an inner swing door, at which the closing edge is provided in an intended manner. The wall has a projection (19) at a side (17) which faces an entrance area of a passenger transport unit in an open condition of the inner swing door that is mounted at the passenger transport unit in an intended manner. the projection is formed as a bulge or bead.