Train Device Positioning via Model Number Segmentation
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Solution Overview
Problem
Conventional position specifying devices for railroad vehicles face challenges in accurately identifying devices within a target train due to potential interference from adjacent trains, leading to incorrect association of identification information with location information.
Innovation Solution
A position specifying device that includes a read target reception unit, design information acquisition unit, model number information acquisition unit, and determination unit to accurately read and associate individual information items with their respective installation positions by using model number information to differentiate between devices within the target train and adjacent trains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless tags are used to read identification information collectively from multiple devices, then reading efficiency is improved, but identification accuracy deteriorates due to interference from adjacent trains
Solution Approach 1:
The patent segments the identification process by dividing devices into different groups based on their installation positions and model numbers. The determination unit processes read information by segmenting it according to these categories, allowing collective reading while maintaining the ability to distinguish between devices from different trains.
Solution Approach 2:
The patent applies local quality by using specific model number information and installation position data as unique identifiers for different device groups. Each device is characterized by its specific model number and position, allowing the system to differentiate between devices even when reading collectively from multiple adjacent trains.
2Speed
If identification information is read from all devices in range, then reading speed is improved, but data processing time increases due to need to remove incorrect information
Solution Approach 1:
The patent applies preliminary action by pre-establishing the relationship between model numbers, installation positions, and device identification information in a database before the reading operation. When information is read collectively, the determination unit can quickly filter and identify correct devices by comparing against this pre-prepared data, eliminating the need for time-consuming manual removal of incorrect information.
3Ease of operation
If collective reading is performed without verification, then operation simplicity is improved, but reliability deteriorates due to incorrect association of identification information
Solution Approach 1:
The patent implements feedback by having the determination unit continuously verify read information against stored model number and installation position data. The system reads identification information collectively, then feeds back the read data to the determination unit which compares it with expected values, ensuring that only correctly associated information is recorded while maintaining simple operation.
Data Source
AI summary
Included are: a unit that receives an indicated read range for an identification tag being affixed to one of devices installed in a train and storing an individual information item identifying the device; a unit that obtains a design information item indicating a model number of a device within the indicated read range and an installation position of the device with the model number in vehicles of the train; a unit that obtains a model number information item indicating a relationship between the model number and the individual information item; a reader that reads an individual information item of the device stored in an identification tag; and a unit that ascertains a model number of the device having the individual information item read and associates the installation position with the individual information item of the device having the model number when the device ascertained is present in the read range.