Railway Vehicle Instrument Tracking via Temporary ID
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Solution Overview
Problem
Existing railway vehicle maintenance systems face challenges in accurately tracking instrument information and maintaining a history of operations and states, especially when instruments are replaced or moved between vehicles, due to the lack of memory and identification mechanisms in many existing railway vehicle mounted instruments.
Innovation Solution
A system comprising a collection unit, an assignment unit, a database, and an estimation unit that assigns temporary identifiers including position information to instrument information, allowing for accurate tracking and history maintenance without the need for instrument identification mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If instrument identification mechanisms are implemented to track instrument information accurately, then measurement precision of instrument tracking is improved, but device complexity increases
Solution Approach 1:
The patent introduces temporary identifiers as an intermediary element that links instrument information to mounting positions without requiring direct identification mechanisms in the instruments themselves. The ground apparatus acts as a mediator that manages the correspondence between temporary identifiers and instrument identification numbers, enabling accurate tracking while keeping the on-board system simple.
Solution Approach 2:
The system creates a virtual copy of instrument identification through temporary identifiers that are assigned to instrument information. This copy allows the ground apparatus to track and manage instrument histories accurately without requiring the physical instruments to contain or transmit their own identification data.
2Measurement precision
If software updates and identification mechanisms are added to existing instruments, then instrument tracking capability is improved, but manufacturing cost increases
Solution Approach 1:
Instead of modifying existing instruments to include identification mechanisms, the system creates virtual copies of identification data through temporary identifiers assigned by the ground apparatus. This approach avoids the costly hardware and software modifications to individual instruments while achieving the same tracking capability.
Solution Approach 2:
The ground apparatus serves as an intermediary that performs the identification management function centrally, eliminating the need to distribute identification mechanisms to each instrument. This centralized approach reduces overall system cost while maintaining tracking accuracy.
3Adaptability or versatility
If temporary identifiers with position information are assigned to track instrument movements, then adaptability to instrument replacement is improved, but loss of information increases due to estimation requirements
Solution Approach 1:
The system uses feedback from instrument information (such as operation counts and timestamps) to estimate and verify the correspondence between temporary identifiers. This feedback mechanism allows the ground apparatus to correct estimation errors and maintain accurate tracking even when instruments are replaced or moved between vehicles.
Data Source
AI summary
It makes it possible to track instrument information and to obtain an accurate history of the instrument information, even when a mounting position mounted with a railway vehicle instrument has been changed. Instrument information indicating an operation or a state of a railway vehicle instrument mounted to each mounting position included in a composition is collected. A serial number determined for each mounting position is updated. The instrument information is assigned with a temporary ID including position information specifying the each mounting position and a serial number. A combination of a new temporary ID and an old temporary ID included in the temporary ID group and assigned to new instrument information and old instrument information indicating an operation or a state of a same railway vehicle instrument is estimated.