Railway Wayside Signal Alignment Automation

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Solution Overview

Problem

The railroad industry faces challenges in efficiently and automatically aligning wayside signals, particularly crossing lamps, which require periodic manual checks to ensure precise alignment, leading to labor-intensive processes and potential hazards if misalignment occurs.

Innovation Solution

A system comprising a light assembly with a magnetometer for geographical direction measurement and an accelerometer for tilt angle measurement, connected to a light communication device that evaluates these measurements against predefined thresholds to determine alignment and trigger alarms or corrections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If manual alignment checks are performed by maintenance personnel, then alignment verification is achieved, but labor intensity increases and response time is delayed

Engineering Contradiction:

Improvealignment check automationVSAvoidsensor and communication system complexity

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The light assembly performs self-diagnosis through integrated sensors that automatically monitor its own alignment parameters. The magnetometer and accelerometer continuously measure directional and angular data, enabling the system to self-verify alignment without external intervention, thus automating the alignment check process while reducing device complexity through integrated monitoring

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system implements continuous feedback by comparing real-time sensor measurements against stored alignment specifications. The communication device transmits measured values to a evaluation system that determines compliance, creating an automated feedback loop that replaces manual inspection with continuous self-monitoring and immediate alignment status reporting

Inventive Principle:

Principle #23Feedback

2Productivity

If periodic manual alignment checks are conducted, then alignment compliance is verified, but labor costs and time consumption increase

Engineering Contradiction:

Improvealignment check efficiencyVSAvoidtime for alignment verification

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The alignment monitoring operates continuously rather than periodically, with sensors taking measurements at predetermined intervals or continuously. This eliminates the need for scheduled manual inspections and enables immediate detection of alignment deviations, significantly improving productivity while reducing the time loss associated with periodic manual checks

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The patent replaces the mechanical manual inspection process with an automated sensor-based measurement system. Magnetometers and accelerometers electronically measure alignment parameters, substituting the mechanical action of personnel physically checking alignment with electronic sensing and automated data evaluation, thereby increasing efficiency and eliminating time consumption associated with manual procedures

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If immediate alignment detection is implemented, then safety is improved, but system complexity and cost increase

Engineering Contradiction:

Improvealignment detection reliabilityVSAvoidmeasurement and communication system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The sensor system serves multiple functions: the magnetometer provides both geographical direction data and can support navigation functions, while the accelerometer provides tilt angle measurements and can monitor vibration or impact events. This multi-functionality enables immediate alignment detection for safety while reducing overall device complexity by using versatile sensors that perform multiple measurement tasks rather than requiring specialized single-purpose devices

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 system automates the alignment process, reducing labor and enabling immediate detection of misalignment, thereby enhancing safety by ensuring proper beam direction towards approaching motorists.

Implementation Method 1

a first position sensor configured to measure a geographical direction of the light assembly

Methodology Applied

Scientific EffectMagnetometer: Magnetometer

Implementation Method 2

a second position sensor configured to measure a tilt angle of the light assembly

Methodology Applied

Scientific EffectAccelerometer: Accelerometer

Data Source

PatentUS11543243B2System and method for determining alignment for railway wayside signal applications

Publication Date: 2023.01.03 SIEMENS MOBILITY INC

AI summary

A system for determining alignment of a signal includes a light assembly comprising a light source operated by an electronic circuit, a first position sensor configured to measure a geographical direction of the light assembly, a second position sensor configured to measure a tilt angle of the light assembly, and a light communication device configured to receive measurements of the first position sensor and the second position sensor, and wherein the light communication device is configured to evaluate the measurements and determine alignment of the light assembly based on predefined tolerance thresholds for the geographical direction and tilt angle.