Broken Rail Detection via Dynamic Current Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional broken rail detection systems using track circuits are ineffective in detecting mechanical rail breaks that do not result in electrical breaks, leading to low detection success rates, increased maintenance time, and higher costs due to the need for insulated joints and additional wayside equipment.
Innovation Solution
A broken rail detection system that employs a central control system and broken rail detection modules to measure current through the track and determine the location of rail breaks without insulated joints, using dynamic track circuits and shunts to detect rail breaks immediately after a train passes the break point, allowing for real-time detection and location identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional track circuits with insulated joints are used for broken rail detection, then detection capability is provided, but detection accuracy is low for mechanical breaks without electrical breaks and maintenance costs increase
Solution Approach 1:
The patent replaces the conventional electrical track circuit system with a mechanical detection system using a detection vehicle equipped with sensors that physically measure rail geometry and conditions. This mechanical approach detects actual rail breaks regardless of electrical continuity, resolving the contradiction between providing detection capability and achieving accurate detection of mechanical breaks without electrical breaks.
2Adaptability or versatility
If insulated joints are installed in tracks to enable track circuit operation, then train detection and broken rail detection are enabled, but weak points in the rail are created and maintenance costs increase
Solution Approach 1:
The patent extracts the detection function from the track infrastructure itself (which requires insulated joints) and relocates it to a mobile detection vehicle. This removes the need for insulated joints and their associated maintenance problems while preserving train detection and broken rail detection capabilities through onboard sensors and communication systems.
3Ease of manufacture
If longer track circuits are used to reduce the number of insulated joints, then fewer weak points are created, but broken rail detection becomes ineffective when trains continuously occupy the track circuit
Solution Approach 1:
The patent transitions from static track circuit-based detection to dynamic mobile detection using a detection vehicle that moves along the track. This dynamic approach allows continuous monitoring regardless of train occupancy, as the detection vehicle can operate independently and provide real-time rail condition data without being blocked by train presence.
4Measurement precision
If shorter DC track circuits are used to ensure clear track for detection, then broken rail detection can occur, but more wayside equipment locations and insulated joints are required
Solution Approach 1:
The patent creates a universal detection system where a single mobile detection vehicle performs multiple functions: train detection, broken rail detection, and rail condition monitoring. This multi-functional approach eliminates the need for multiple separate wayside equipment locations and insulated joints, as the detection vehicle travels to various locations and provides comprehensive monitoring capabilities.
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
The system effectively detects rail breaks immediately after a train passes, reducing maintenance time and costs by eliminating the need for insulated joints and increasing detection accuracy, enabling safer and more efficient rail operations.
Implementation Method 1
a broken rail detection module to measure current through the track
Data Source
AI summary
A system and method for detecting broken rails in a track of parallel rails includes at least one first broken rail detection module configured to measure a current through the track and a central control system configured to determine a location of at least one train on the track. The at least one first broken rail detection module is configured to send the central control system a signal based on the measured current. The central control office is configured to determine if a broken rail exists on the track and/or a location of the broken rail on the track based at least partially on the measured current and the location of the at least one train on the track.