Dynamic Channel Selection for Distributed Power Train Communication
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Solution Overview
Problem
In densely populated geographic areas, distributed power trains face communication delays due to limited available communication channels, leading to inefficiencies in coordinating tractive efforts between lead and remote locomotives, as multiple trains are often assigned to the same channel, causing delays in receiving instructions for tractive effort changes.
Innovation Solution
A communication system for rail vehicles that includes a transceiver assembly, a selection module, and a monitoring module, which dynamically switches between communication channels based on load parameters to avoid heavily populated channels, ensuring efficient data signal transmission by selecting less populated channels for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple distributed power trains are assigned to the same communication channel, then the number of available channels is limited by regulatory restrictions, but communication delays occur when many trains share common channels
Solution Approach 1:
The patent implements dynamic channel selection where the communication system monitors the population (number of other trains) on each available channel and switches channels based on real-time conditions. The system calculates a population value for each channel and selects the channel with the lowest population, thereby dynamically adapting to changing traffic conditions and avoiding static channel assignment delays
Solution Approach 2:
The system changes the communication parameter (channel frequency) based on monitored conditions. By calculating population values for different channels and selecting the optimal channel, the system varies the communication parameter to maintain efficient data signal transmission despite limited total channels available under regulatory restrictions
2Ease of operation
If channel assignment is based on unit identification or serial number, then channel allocation is simple and deterministic, but densely populated areas experience significant communication delays
Solution Approach 1:
The patent transitions from static channel assignment (based solely on unit ID) to dynamic channel selection (based on real-time population monitoring). The system continuously monitors channel population values and switches channels accordingly, maintaining ease of operation through automated monitoring and selection while eliminating the delays caused by fixed assignment in densely populated areas
Solution Approach 2:
The communication system incorporates feedback by monitoring the population value of each channel and using this information to make intelligent channel selection decisions. The system receives feedback about channel congestion levels and adjusts its channel usage accordingly, selecting less populated channels to maintain efficient communication
Data Source
AI summary
A communication system for a vehicle includes a transceiver assembly, a selection module, and a monitoring module. The transceiver assembly selectively communicates a data signal over a plurality of communication channels. The data signal is related to distributed power operations of the vehicle. The selection module is communicatively coupled with the transceiver assembly and switches the transceiver assembly to any of the communication channels. The monitoring module is communicatively coupled with the selection module and determines a load parameter of one or more of the communication channels. The load parameter is based on a population value of the one or more communication channels. The selection module switches the transceiver assembly to a selected channel of the communication channels based on the load parameter for communicating the data signal over the selected channel.