ECP Brake Semi-Active Mode for Yard Operations
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Solution Overview
Problem
Current electrically controlled pneumatic (ECP) brake systems for trains are either completely active or inactive, leading to unnecessary train stoppages during loading and unloading operations, as they cannot be selectively disabled without losing train make-up and geometry information, resulting in operational inefficiencies and costs due to interruptions in automated processes.
Innovation Solution
Implementing a semi-active mode for the ECP brake system, where the system controller manages the transition between active and inactive states, maintaining power to ECP devices and monitoring train-line integrity, allowing for selective disabling and re-enabling of the brake system based on operational needs, and applying emergency brakes if critical events occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the ECP brake system is completely active during loading and unloading operations, then train safety and control are maintained, but unnecessary train stoppages occur due to detection of critical ECP system events that are not relevant for yard operations
Solution Approach 1:
The ECP brake system transitions from a static active/inactive state to a dynamic semi-active mode that can be selectively activated or deactivated based on operational context. The system controller dynamically adjusts the operational state of ECP devices during loading and unloading operations, allowing the brake system to adapt between full functionality and selective disengagement to prevent unnecessary stoppages while maintaining safety when needed.
2Adaptability or versatility
If the ECP system is completely inactive during yard operations, then operational flexibility is improved, but the system must be re-initialized when transitioning back to active mode, resulting in loss of train make-up and geometry information
Solution Approach 1:
The system controller maintains train make-up and geometry information in memory during transitions to semi-active mode, performing preliminary preservation of critical data before the ECP devices are deactivated. This allows the system to be re-initialized quickly when transitioning back to active mode, as the essential information is already preserved and does not need to be重新 acquired through full re-initialization procedures.
3Productivity
If the ECP brake system is manually released and mechanically indexed through loading/unloading facilities, then operational control is maintained, but operational complexity and time consumption increase
Solution Approach 1:
The patent extracts the brake control functionality from manual/mechanical operations and transfers it to the ECP system's electronic control domain. By deactivating ECP devices in a controlled semi-active mode rather than completely disabling the system, the electronic brake control remains available for selective use while preventing automatic stoppage responses to non-critical events, thereby reducing operational complexity compared to fully manual release and indexing procedures.
Data Source
AI summary
The present method operates an electrically controlled pneumatic (ECP) brake system that includes a system controller and a plurality of ECP devices on a train, in a semi-active mode between an active mode and an in active mode. The method includes setting the system controller to the semi-active mode if the ECP brake command is release; and setting the released ECP devices to the inactive state by the system controller when entering the semi-active mode. The ECP devices are set to an active state and to apply the brake by the system controller in response to an ECP brake command of apply. The ECP devices are reset to release and then to the inactive state by the system controller in response to an ECP brake command of release.