Rail Vehicle Door Auxiliary Lock Control for Non-Platform Side Unlocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In traditional urban rail vehicles, the auxiliary locks of both vehicle doors are simultaneously activated and deactivated due to undifferentiated '10-km train line' signals, causing noise, increased mechanical stress, and reduced service life, necessitating additional cables and modifications that increase costs and resource consumption.
Innovation Solution
A method and device that control the auxiliary locks by differentiating door sides using door opening side information and speed signals, ensuring the non-platform side lock remains energized during high-speed travel, reducing unnecessary unlocking and noise, and extending lock service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electromagnetic valve corresponding to the auxiliary lock is controlled by an undifferentiated '10-km train line' signal, then the door opening function is achieved, but the auxiliary lock on the non-platform side is unnecessarily unlocked causing noise and reduced service life
Solution Approach 1:
The patent segments the control signal by introducing door side identification information, separating the control of platform-side and non-platform-side auxiliary locks. The door side identification information is used to determine whether to output the control signal to the electromagnetic valve, ensuring that only the platform-side lock is activated when needed, while the non-platform-side lock remains inactive to avoid unnecessary noise and mechanical stress.
Solution Approach 2:
The patent applies preliminary action by pre-establishing the door side identification information before the door opening operation. This identification information is obtained in advance and stored, allowing the control system to make informed decisions about which auxiliary lock to activate, preventing unnecessary activation of the non-platform-side lock before the actual door opening is needed.
2Ease of operation
If additional cables are added to differentiate the '10-km train line' signal at two sides, then the selective lock control is achieved, but the system complexity and cost increase
Solution Approach 1:
The patent applies universality by making the existing '10-km train line' signal serve multiple functions: it simultaneously provides door opening control and auxiliary lock control. By introducing door side identification information that is already available in the system, the patent eliminates the need for separate cables or additional signaling infrastructure, achieving selective lock control using the existing universal signal system.
Solution Approach 2:
The patent uses door side identification information as an intermediary element that mediates between the undifferentiated control signal and the specific auxiliary lock control. This intermediary allows the system to differentiate between platform-side and non-platform-side locks without requiring separate physical signal paths, avoiding the need for additional cables while achieving precise control.
3Reliability
If the auxiliary lock is frequently activated and deactivated, then the door safety function is maintained, but the service life of the auxiliary lock is reduced
Solution Approach 1:
The patent applies local quality by making the control signal differentiation based on door side identification. The platform-side auxiliary lock is activated only when needed for safety, while the non-platform-side auxiliary lock is kept inactive to avoid unnecessary wear. This localized control approach maintains door safety where required while preserving the service life of locks that do not need frequent activation.
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
The solution effectively prevents unnecessary unlocking of non-platform side locks, reducing noise and mechanical stress, thereby prolonging the service life of auxiliary locks and minimizing resource consumption.
Implementation Method 1
an electromagnetic valve corresponding to an auxiliary lock of the vehicle door
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to the technical field of rail vehicles, and specifically relates to a method and device for controlling an auxiliary lock of a vehicle door, and a rail vehicle. The method comprises: after a vehicle departs from the current station, receiving a speed signal, and when the speed signal is at a high level and door opening side information of the next station is received, controlling a door controller to stop outputting an electrical signal to an electromagnetic valve of a corresponding auxiliary lock, the door opening side information comprising a target door opening side of the next station; acquiring a vehicle door side of a vehicle passenger compartment where the door controller is located; and when the target door opening side is different from the vehicle door side, controlling the door controller to output an electrical signal to the electromagnetic valve of the auxiliary lock corresponding to the vehicle door side. In the present invention, when a vehicle is about to enter a station, it is ensured that an auxiliary lock on a non-platform side is not unlocked, such that the action noise of the auxiliary lock and the number of instances of unlocking of the auxiliary lock are reduced, thereby prolonging the service life of the auxiliary lock.