Passenger Door Light Bar Status Display for Selective Opening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Passengers on transit vehicles are not adequately informed about the status of automatic doors, such as whether they are authorized to open, opening, closing, or in a resting position, leading to potential safety concerns and inconsistent passenger experience.
Innovation Solution
An interactive display device near the door provides visual notifications in different colors and patterns to indicate the door's state, controlled by a programmable unit, allowing passengers to know the door's status and safely request its opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If selective door operation is implemented to reduce wear and improve reliability, then door system durability is improved, but passenger awareness of door status deteriorates
Solution Approach 1:
The patent employs color-coded LED indicators (red, yellow, green) to communicate different door states to passengers. The first indicator shows authorization status (red when unauthorized, green when authorized), while the second indicator shows operational state (red when closed, green when open). This color-change system resolves the contradiction by providing clear visual information that maintains passenger awareness while enabling selective door operation for improved reliability.
2Loss of information
If multiple visual states are used to indicate different door conditions, then passenger information awareness is improved, but device complexity increases
Solution Approach 1:
The display system is segmented into two distinct indicator components: a first visual indicator for authorization status and a second visual indicator for operational state. Each indicator can be independently controlled and positioned at different locations. This segmentation allows multiple pieces of information to be conveyed through simple, modular components rather than a single complex display, thus improving information awareness while managing device complexity.
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
Enhances passenger safety and comfort by clearly communicating door states, reducing wear on door systems, and improving operational reliability through informed passenger interaction.
Implementation Method 1
a light-emitting handle bar is provided at an entrance of a railroad vehicle and, in particular, has the function of visually indicating the opening and closing state of a door
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A passenger communication lighting display on or adjacent a touch bar on a passenger door of a transit vehicle comprises a display that can be controlled to display multiple colors continuous or blinking, and a control means causing the display to be dark when the door is closed, the display to be a first color when the operator has authorized opening, the display to flash a second color when the passenger has requested the door be opened, the display to be blinking the second color when the door is opening, the display to be continuously the second color when the door is resting in the open position, and the display to be blinking a third color while the door is closing.