Transport Vehicle Departure Control Using Platform-Facade Gap Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems for managing the movement of transport vehicles near platform facades are inefficient, leading to prolonged stopping times due to unnecessary obstacle detection, which can be superfluous in certain cases, and pose a risk of trapping users between vehicle and platform doors.
Innovation Solution
A management system that includes detection units with presence identification and distance determination modules to quickly measure the distance between the vehicle and platform facade, allowing direct departure authorization if the distance is safe, thereby omitting unnecessary obstacle detection steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If obstacle detection is performed for all vehicle departures, then user safety is improved, but vehicle stopping time increases
Solution Approach 1:
The system applies different detection protocols to different spatial locations. When the measured gap is below the threshold distance, full obstacle detection is performed to ensure safety. When the gap exceeds the threshold, detection is omitted as the risk is negligible. This local differentiation of detection intensity resolves the contradiction between safety and time loss.
Solution Approach 2:
The system changes the detection parameter (detection intensity) based on the gap distance parameter. By using the gap distance as a threshold to determine whether to perform full obstacle detection or skip it, the system dynamically adjusts safety measures to match the actual risk level, thereby reducing unnecessary time loss while maintaining safety where needed.
2Reliability
If distance measurement is performed for all departures, then safety is improved, but detection time increases
Solution Approach 1:
The system performs distance measurement as a preliminary action before deciding whether to perform full obstacle detection. This preliminary measurement of gap distance allows the system to pre-categorize departures into high-risk (requiring full detection) and low-risk (can skip detection) groups, thereby avoiding unnecessary detection time for safe departures while ensuring safety for risky ones.
3Measurement precision
If platform doors are equipped with detection units, then obstacle detection accuracy is improved, but device complexity increases
Solution Approach 1:
The detection units on platform doors serve multiple functions: they measure gap distance, detect obstacles, and trigger safety protocols. By making these units multi-functional rather than adding separate dedicated components for each function, the system improves detection accuracy without proportionally increasing 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
Reduces vehicle stopping time by eliminating unnecessary detection steps, achieving significant time savings and ensuring safe vehicle movement while maintaining operational efficiency.
Implementation Method 1
CN 214 823 230 will also be cited, which discloses obstacle detection between the platform facade and the vehicle, using laser remote sensing or 'LIDAR' (acronym for the English expression 'Laser Imaging Detection And Ranging')
Implementation Method 2
CN 102529981B describes a platform facade, comprising infrared emitters which cooperate with receivers placed on a train. If an obstacle is present between the platform facade and the train, the aforementioned obstacle interrupts the infrared beam
Data Source
Figure 1~3
Figure 4~5
Figure 6~8
AI summary
This management system comprises at least one detection unit (1-4) which includes an identification module (10-40) for detecting unauthorized presence between the facade and the vehicle, a departure authorization module (60), and control means (50) configured to activate this authorization module. According to the invention, each detection unit further comprises a module (15-45) for determining the instantaneous distance (Dinst) separating the walls (104, 280) of the facade and the vehicle, while the control means are configured to activate the authorization module without, however, activating the presence identification module (10-40), if the distance (Dinst) is less than a predetermined threshold (Ds).If the instantaneous distance is too small for there to be a risk of a user being trapped, the invention eliminates the classic detection step, which makes it possible to reduce the vehicle's stopping time along the platform by avoiding cases called "false positives", corresponding to a detection of the side of the vehicle which is wrongly interpreted as the presence of a passenger trapped between the platform door and the vehicle door.