Locomotive Messaging Units for Reliable Wireless Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automated control systems for rail vehicles face reliability issues due to unreliable wireless communication, increased reliance on radio equipment, and high costs associated with modifying existing components for implementing positive train control (PTC) systems.
Innovation Solution
An onboard communication system that includes messaging units connected to radios on multiple locomotives, which receive and forward duplicate data communications to ensure delivery and determine the health of each radio for optimal message transmission, creating backup pathways and reducing reliance on a single radio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If wireless communication is used for automated control systems, then remote management capability is improved, but communication reliability deteriorates
Solution Approach 1:
The patent applies local quality by having each messaging unit independently monitor its local radio's health status and make localized decisions about message routing. Each messaging unit evaluates its own radio's performance characteristics and forwards messages to the most reliable available radio, creating differentiated behavior across messaging units based on their individual radio conditions.
Solution Approach 2:
The system dynamically adapts its communication paths by continuously monitoring radio health status and adjusting message routing in real-time. Messaging units can switch between different radios based on changing conditions, making the communication system flexible and responsive to reliability variations rather than static.
2Device complexity
If reliance on single radio is increased for automated control, then system simplicity is improved, but reliability deteriorates
Solution Approach 1:
The patent implements beforehand cushioning by having messaging units proactively monitor radio health status and prepare backup routing paths before failures occur. When a radio deteriorates or fails, the system already has mechanisms in place to redirect messages through alternative radios, cushioning against the impact of radio failure.
Solution Approach 2:
The system uses feedback mechanisms where messaging units continuously receive health status information about radios and adjust their behavior accordingly. This feedback loop enables the system to detect radio degradation and automatically switch to alternative paths, maintaining reliability without requiring complex manual intervention.
3Adaptability or versatility
If modifications to existing train components are made for PTC implementation, then system functionality is improved, but implementation cost and difficulty increase
Solution Approach 1:
The patent applies universality by designing messaging units that can operate with multiple different radio types and configurations. The messaging units are written as software components that can adapt to various radio hardware platforms, allowing the same core system to function with different radio implementations without requiring custom hardware modifications for each scenario.
Solution Approach 2:
The system uses copying by creating virtual representations of radio health status and communication pathways through messaging units. Instead of physically modifying hardware components, the system creates software-based copies and representations of communication states, allowing flexible configuration without substantial physical modifications to existing train components.
Data Source
AI summary
An onboard communication system for a locomotive consist is disclosed. The communication system may have first and second locomotive communication subsystems. The first communication subsystem may be located on a first locomotive. Each communication subsystem may have a messaging unit communicatively connected to a radio. The first messaging unit may be communicatively connected to the second messaging unit. The second messaging unit may be configured to receive a data communication from the second radio and send the data communication to the first messaging unit. The first messaging unit may be configured to receive the data communication from the second messaging unit, receive a copy of the data communication from the first radio, determine that the data communications are duplicate copies of one another, and send one of the data communications to a locomotive control system based on the determination.