Locomotive Operator Control Unit Location Tracking via RF Channel Merging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems face challenges in efficiently transmitting location data from operator control units to machine control units in locomotives due to bandwidth constraints in existing RF communication channels, which are often fully utilized for command data transmission, making it complicated and expensive to add additional channels.
Innovation Solution
Incorporating a GPS receiver into the operator control unit to transmit location information via the existing RF channel by modifying the communication protocol to send location data only when command data is stable, using the same channel for both command and location data transmission, and employing relative position data to reduce bandwidth requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If an additional RF channel is added for location data transmission, then location tracking capability is improved, but system complexity and cost increase
Solution Approach 1:
The patent combines location data and command data into a single RF communication channel. The OCU transmits both types of data through the existing channel used for command communication, eliminating the need for a separate location data channel and reducing system complexity.
Solution Approach 2:
The existing RF communication channel is made multi-functional by enabling it to carry both command data and location data. This universal channel serves dual purposes: controlling the locomotive and tracking the operator's location, thereby avoiding additional hardware complexity.
2Measurement precision
If location data is transmitted continuously, then location tracking accuracy is improved, but bandwidth consumption increases
Solution Approach 1:
Instead of continuous transmission, the patent implements periodic location data transmission. The OCU sends location information at specific intervals or when location changes occur, maintaining tracking accuracy while significantly reducing the volume of data transmitted over the RF channel.
Solution Approach 2:
The system transmits location data selectively rather than continuously - only when necessary for tracking accuracy. This partial action approach sends sufficient location information to maintain precision without the excessive bandwidth consumption of continuous transmission.
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
This approach allows for efficient transmission of location data without adding a new RF channel, enhancing safety by knowing the operator's location, optimizing train movement, and supporting incident investigations while reducing costs.
Implementation Method 1
a global positioning system (GPS) receiver configured to receive location information of the operator control unit
Data Source
Figure 1
Figure 2
AI summary
According to various aspects, exemplary embodiments are disclosed of devices, systems, and methods related to tracking location of operator control units for locomotives. In an exemplary embodiment, an operator control unit includes a user interface configured to receive one or more commands from an operator for controlling a locomotive. The operator control unit also includes a global positioning system (GPS) receiver configured to receive location information of the operator control unit, and a wireless communication device. The wireless communication device is configured to transmit command data corresponding to the one or more commands and location data corresponding to the location information to a machine control unit on the locomotive.