Railway Switch Diagnosis via Common Electrical Variables
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Solution Overview
Problem
Current soft diagnosis methods for railroad electric switching systems are inefficient and costly, requiring individual measurement of electrical variables for each turnout operation, which is not feasible with existing technologies.
Innovation Solution
A method and device that utilize common electrical measured variables, such as control current and voltage, for a group of switch drives with a shared power supply to determine diagnostic data, allowing for efficient and reliable soft diagnosis without the need for individual measurement of each switch drive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual measurement of electrical variables is performed for each turnout operation, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent combines multiple measurement functions into a single centralized measurement unit that monitors electrical variables for multiple turnout operations simultaneously. This merging approach maintains measurement precision by using a unified measurement standard while significantly reducing device complexity by eliminating the need for separate measurement devices for each turnout.
Solution Approach 2:
The measurement unit is designed with universal functionality to handle multiple turnout operations through a single device. It can measure electrical variables across different turnout operations by switching or multiplexing, providing multi-functionality that reduces overall system complexity while maintaining measurement capabilities.
2Measurement precision
If individual measurement devices are installed for each switch drive, then measurement precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent merges multiple measurement functions into a single manufacturable unit, simplifying the manufacturing process. Instead of producing and assembling multiple individual measurement devices, a single standardized measurement unit is manufactured and then deployed to monitor multiple turnout operations, significantly improving ease of manufacture.
Solution Approach 2:
The measurement system is segmented into a centralized measurement unit and distributed monitoring points. This segmentation allows the complex measurement functionality to be concentrated in one standardized unit that is easier to manufacture, while the distributed points can use simpler connection interfaces.
3Ease of operation
If common electrical measured variables are used for a group of switch drives, then ease of operation is improved, but measurement precision may deteriorate
Solution Approach 1:
The patent introduces an intermediary centralized measurement unit that acts as a mediator between the common electrical variables and the diagnostic system. This intermediary captures and processes the electrical variables with high precision before presenting the data for diagnostic purposes, thereby maintaining measurement precision while preserving the operational simplicity of using common variables.
Solution Approach 2:
The patent replaces direct individual measurement connections with an electrical/electronic intermediary system that can digitally process and differentiate measurements for each turnout operation. This substitution allows common electrical variables to be used without sacrificing precision, as the electronic measurement unit can precisely distinguish and record variables for each individual turnout.
Data Source
AI summary
The invention relates to a method for diagnosing railway switches which can be implemented with comparatively low expenditure and at the same time has a high level of reliability and efficiency. For this purpose, the method for diagnosing railway switches proceeds according to the invention in such a way that, for a group of a plurality of railway switch drives (WA1-WA5) which have a common power supply (SV), measured values are acquired which relate to at least one common electrical measurement variable, in particular in the form of a common actuating current of the railway switch drives (WA1-WA5), to a common actuating voltage of the railway switch drives (WA1-WA5) and/or to a common reactive power which is taken up by the railway switch drives (WA1-WA5). Furthermore, operational data relating to a respective operating state of the individual railway switch drives (WA1-WA5) of the group are acquired, and taking into account at least the acquired measured values and the acquired operational data for at least one railway switch (e.g. W3) whose railway switch drive (WA3) belongs to the group, characteristic diagnostic data is determined for a state of the respective railway switch (W3). The invention also relates to a device (WD) for diagnosing railway switches.