Onboard Route Feature Identification via Conductive Track Signals
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Solution Overview
Problem
Conventional methods for determining a vehicle's position on a route, such as using GPS, lack sufficient accuracy to distinguish between adjacent tracks, and require expensive trackside equipment to monitor and communicate switch positions, which is not efficient for preventing collisions between vehicles on parallel or near-parallel tracks.
Innovation Solution
A system that includes application devices conductively or inductively coupled with conductive tracks to inject examination signals and monitor electrical characteristics, allowing onboard processors to identify construction features like switches, diamond crossings, or bridges, and determine vehicle location without the need for expensive trackside equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS is used to determine vehicle position, then the system is simple and low-cost, but the measurement precision is insufficient to discriminate between adjacent tracks
Solution Approach 1:
The patent introduces examination signals as an intermediary medium to transfer position information. Instead of directly measuring position with GPS, the system injects signals into the conductive tracks and uses the returned signals as intermediaries to indirectly determine vehicle location, achieving higher precision without complex trackside equipment
Solution Approach 2:
The patent replaces the mechanical/GPS-based position determination system with an electrical signal-based system. By substituting the physical GPS satellite signal with electrical examination signals traveling through conductive tracks, the system achieves superior precision while maintaining relative simplicity
2Measurement precision
If expensive trackside equipment is installed to monitor switch position, then the measurement precision improves, but the device complexity and cost increase significantly
Solution Approach 1:
The conductive tracks perform dual functions: they serve both as electrical conduits for power and signal transmission and as the sensing medium for detecting vehicle position and switch status. The tracks themselves 'self-service' by providing the measurement capability without requiring separate sensor infrastructure
Solution Approach 2:
The examination signal injection system serves multiple functions simultaneously: it detects vehicle presence, determines vehicle position, identifies switch status, and distinguishes between adjacent tracks. This multi-functional approach eliminates the need for dedicated equipment for each function, reducing overall system complexity
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
Improves the detection of vehicle location and direction, enhances safety, and reduces risks by accurately determining switch positions and identifying specific tracks, thereby preventing collisions and optimizing route management.
Implementation Method 1
The at least one application device is configured to be at least one of conductively or inductively coupled with at least one of a first conductive track or a second conductive track
Implementation Method 2
The at least one application device is configured to be at least one of conductively or inductively coupled with at least one of a first conductive track or a second conductive track
Data Source
AI summary
A system includes at least one application device, a control unit, and at least one processor. The at least one application device is conductively or inductively coupled with at least one of a first conductive track or a second conductive track. The control unit is configured to control supply of electric current from a power source to the at least one application device to electrically inject at least one examination signal into the conductive tracks. The at least one processor is configured to monitor the one or more electrical characteristics of at least one of the first or second conductive tracks, and to identify a construction feature of the route based on the one or more electrical characteristics, wherein the construction feature corresponds to a man-made aspect of the route.