Railway Subframe Inspection Device Using Autonomous Rail-Mounted Sensors
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Solution Overview
Problem
Current maintenance inspections of railway vehicles are inefficient, requiring dedicated tracks, posing health and safety risks to operators, and often result in unnecessary concentration due to high compliance rates, leading to infrastructure saturation and increased inspection time.
Innovation Solution
A motorized inspection device that moves along the rails to access undercarriage components without needing special tracks, equipped with image sensors and measurement devices, processing data to determine vehicle status, and featuring a removable articulated arm for safety and wireless communication to streamline inspections and reduce errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual inspections are carried out by human operators on dedicated rail inspection tracks, then inspection thoroughness can be maintained, but infrastructure saturation increases and vehicle availability decreases
Solution Approach 1:
The patent replaces the mechanical infrastructure of dedicated inspection tracks with an autonomous inspection device that travels along existing railway tracks using motorized propulsion. This substitution eliminates the need for separate inspection infrastructure while maintaining inspection capability, thereby resolving the contradiction between inspection thoroughness and vehicle availability.
Solution Approach 2:
The inspection device performs autonomous inspections without requiring human operators to be physically present on the tracks. The device self-navigates, self-inspects, and self-records data, enabling inspections to occur during normal railway operations without disrupting vehicle availability while maintaining thoroughness through automated detection systems.
2Reliability
If human operators perform inspections on dedicated tracks, then detailed examination is possible, but operator health and safety are compromised
Solution Approach 1:
The patent replaces human operators with an autonomous inspection device equipped with sensors, cameras, and diagnostic tools. This substitution eliminates exposure to harmful factors such as moving trains, track hazards, and environmental conditions while maintaining or enhancing inspection quality through automated detection and recording systems.
3Reliability
If inspections require dedicated rail tracks, then systematic examination can be performed, but infrastructure complexity increases
Solution Approach 1:
The patent extracts the inspection function from the dedicated track infrastructure and integrates it into a self-contained autonomous device. This extraction eliminates the need for complex separate inspection tracks while maintaining systematic examination capabilities through onboard sensors, processing units, and standardized inspection protocols.
4Reliability
If 90% of inspected organs are determined compliant, then false positives increase, but operator concentration requirements create safety risks
Solution Approach 1:
The patent replaces human judgment with automated image recognition and diagnostic algorithms that objectively analyze inspection data. This substitution eliminates operator fatigue and concentration errors while maintaining high accuracy in compliance determination through consistent application of detection criteria and automated decision-making algorithms.
Data Source
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AI summary
A railway vehicle subframe inspection device (10), adapted to move under a railway vehicle between the rails (8) of the railway track (7) of said railway vehicle, characterized in that it comprises: - a drive system (9) adapted to move the inspection device along the rails; - an application block (2) comprising at least one element from an image sensor adapted to capture images under the chassis of the railway vehicle being inspected and a measurement device adapted to perform measurements relating to said subframe, said application block being adapted to deliver to a processing block data captured or measured by the element; - the processing block, adapted to process the data delivered by the application block and determine an inspection status of the railway vehicle being inspected based on at least said processed data.