Locomotive Door Lock Control System with Electronic Monitoring
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Solution Overview
Problem
Existing control systems for locomotive door locks do not enable comprehensive monitoring and remote management of access control functions, particularly lacking the ability to change access codes and provide real-time data on door operations.
Innovation Solution
An electronic control system with a sliding locking bar, actuator, interlock limit switch, and a processor connected to a card reader, keyboard, display, and Ethernet network, allowing remote access management, code changes, and monitoring of door operations through a USB input and Ethernet communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical lock system with base bar and handles is used, then the door locking function is provided, but monitoring and remote management of access control is not enabled
Solution Approach 1:
The patent replaces the purely mechanical lock system with an electronic control system that includes a microcontroller, card reader, keyboard, display, and Ethernet communication module. This substitution enables digital monitoring and remote management of access control while maintaining the mechanical locking function through an electric motor that moves the locking bar.
Solution Approach 2:
The electronic control system integrates multiple functions into a single device: access control monitoring, code management, card reading, keyboard input, display output, Ethernet communication, and mechanical lock actuation. This multi-functionality enables comprehensive access control management without requiring separate systems for each function.
2Loss of information
If access control monitoring is added to the mechanical lock system, then comprehensive monitoring is enabled, but the device complexity increases
Solution Approach 1:
The system incorporates limit switches that detect the position of the locking bar and provide feedback to the microcontroller. This feedback mechanism enables automatic monitoring of door lock status, access control events, and system states, eliminating the need for complex manual monitoring while ensuring comprehensive information capture.
Solution Approach 2:
The electronic control system automatically logs access control events, manages access codes, and communicates door status without requiring external intervention. The system self-monitors its own operation through integrated sensors and processors, reducing the complexity of external monitoring infrastructure.
3Adaptability or versatility
If remote management capability is implemented, then remote access control is enabled, but the system complexity increases
Solution Approach 1:
The Ethernet communication module serves as an intermediary between the local lock system and remote management infrastructure. This module enables network connectivity and remote access control commands while isolating the core locking mechanism from complex network protocols, simplifying the integration of remote management capabilities.
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
Enables comprehensive monitoring and remote management of locomotive door locks, allowing secure and efficient access control with real-time reporting and system updates, enhancing security and operational efficiency.
Implementation Method 1
The actuator and interlock limit switch are coupled within the electronic system with a control processor, a card reader and keyboard, display, Ethernet network access and USB input
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The control system for a train locomotive lock interlock, especially a door lock, contains a locking bar (6) located above and along the base bar (1), a controlled actuator (4), which slides parallel to the base bar (1), or the lock longitudinal axis, coupled with the locking bar (6) via a tie rod (5), whereas the locking bar tongue (2) has an oblique bean-shaped hole (9), cooperating with the bolt lock pin (7), while the system also contains a stabilizer (10), interlock limit switch and door closing limit switch (3), while the locking bar (6) contains recesses (11) cooperating with the key insert (13, 14), which limit its length , while the actuator (4) and interlock limit switch (3) are coupled within the electronic system with a control processor, a card reader and keyboard, display, Ethernet network access and USB input, and indirectly, via the power output with the actuator (4).