Onboard Route Examining System for Rail Track Damage Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems for inspecting rail tracks for damage are limited by accuracy issues due to vehicle speed, require slow movement, are prone to errors, and often result in false alarms, making route maintenance inefficient.
Innovation Solution
A route examining system that uses onboard detection units to inject and monitor electrical signals along rail tracks, allowing for real-time identification of damaged sections while the vehicle is in operation, and differentiates between actual damage and false alarms by analyzing signal characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If cameras and lasers are mounted on rail vehicles to optically detect breaks and damage, then the inspection can be performed during vehicle travel, but the accuracy is limited by the speed at which the rail vehicles move
Solution Approach 1:
The patent replaces mechanical/optical inspection systems (cameras and lasers) with an electrical signal-based detection system. Examination signals are electrically injected into the conductive tracks and detected by detection units, eliminating the accuracy limitations imposed by vehicle speed in optical systems.
Solution Approach 2:
The patent introduces electrical examination signals as an intermediary between the detection system and the track. These signals serve as a mediator that can accurately indicate track conditions without being affected by the speed of the inspecting vehicle, unlike direct optical measurement methods.
2Measurement precision
If ultrasonic transducers are placed at or near the tracks to ultrasonically inspect the tracks, then damage can be detected, but the transducers must move very slowly relative to the tracks
Solution Approach 1:
The patent replaces the mechanical ultrasonic transducer system with an electrical signal injection and detection system. The examination signals are electrically transmitted through the conductive tracks and detected without requiring physical contact or slow movement of transducers along the track.
Solution Approach 2:
The patent uses electrical examination signals as an intermediary that can traverse the track at high speeds without the movement speed limitations of physical ultrasonic transducers. The signals provide accurate damage detection information while enabling fast inspection.
3Measurement precision
If manual inspection by human inspectors is used to inspect for broken and damaged sections of track, then detailed examination can be performed, but the inspection is slow and prone to errors
Solution Approach 1:
The patent implements a self-service inspection system where the track itself conducts the examination signals and provides detection information. The conductive tracks actively participate in the inspection process by transmitting the signals and enabling their detection, eliminating the need for slow manual inspection by human inspectors.
Solution Approach 2:
The patent replaces manual human inspection with an automated electrical signal-based system. The detection units electronically detect the examination signals to identify track damage, providing both high accuracy and fast inspection speed without human involvement.
4Measurement precision
If wayside devices that send electric signals through the tracks are used to detect breaks, then breaks can be identified, but the devices are immobile and cannot inspect large spans of track
Solution Approach 1:
The patent transforms the inspection system from static wayside devices to a dynamic onboard system. The examination signal injection and detection units are mounted on moving vehicles, enabling the system to inspect large spans of track as the vehicle travels along the route, greatly increasing inspection coverage.
Solution Approach 2:
The patent creates a universal inspection system that can inspect entire routes by mounting the examination signal injection and detection units on vehicles that travel along the conductive tracks. This multi-functional approach allows a single mobile system to cover large spans of track that would require multiple immobile devices.
5Measurement precision
If wayside devices send electric signals through long circuits to detect breaks, then breaks can be identified, but it is difficult and time-consuming to locate the exact location of the break within the long circuit
Solution Approach 1:
The patent segments the inspection process into multiple detection points along the route by using multiple detection units spaced apart on the inspecting vehicle. This segmentation allows the system to identify which specific segment between injection and detection points contains the damage, enabling precise location identification without time-consuming patrols.
Solution Approach 2:
The patent implements feedback by having detection units continuously monitor the examination signals and provide real-time information about track conditions. When a signal is not received or is altered, the system immediately identifies the location of the damage, eliminating the time delay associated with manual patrol and location identification.
6Measurement precision
If wayside devices are used to inspect tracks, then breaks can be detected, but other track features such as crossing shunts and insulated joints may emulate the signal response expected from a broken rail and provide false alarms
Solution Approach 1:
The patent applies local quality by having multiple detection units at different locations detect the examination signal and comparing the results. The system analyzes the local response at each detection point to determine whether a signal alteration is due to actual track damage or normal track features, reducing false alarms caused by crossing shunts and insulated joints.
Solution Approach 2:
The patent uses feedback from multiple detection units to verify signal alterations. By comparing signals received at different detection points and analyzing the pattern of signal changes, the system can distinguish between genuine track breaks and false alarm conditions caused by normal track features like crossing shunts and insulated joints.
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
Enables efficient and accurate real-time detection of rail track damage during regular operation, reducing the likelihood of false alarms and improving maintenance efficiency by identifying damaged sections quickly and precisely.
Implementation Method 1
The first and second application devices are configured to electrically inject a first examination signal and a second examination signal, respectively, into the conductive tracks
Implementation Method 2
The detection unit is configured to monitor one or more electrical characteristics of the conductive tracks in response to the first and second examination signals being injected into the conductive tracks
Data Source
AI summary
A route examining system includes first and second detection units and an identification unit. The first and second detection units are configured to be disposed onboard a vehicle system traveling along a route having plural conductive tracks. The first and second detection units are disposed at spaced apart locations along a length of the vehicle system. The first and second detection units are configured to monitor one or more electrical characteristics of the conductive tracks in response to an examination signal being electrically injected into at least one of the conductive tracks. The identification unit includes one or more processors configured to determine that a section of the route includes an electrical short responsive to the one or more electrical characteristics monitored by the first and second detection units indicating that the examination signal is received by only one of the first and second detection units.