Railway HVAC Data Management for Precise Abnormality Detection
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Solution Overview
Problem
The existing railway vehicle air-conditioning management systems have limited precision in determining abnormal states due to a small number of data references, which hinders effective management and maintenance.
Innovation Solution
A method is introduced to collect and record air conditioning data from multiple railway vehicles, allowing for increased data references by performing special operations without passengers, thereby enhancing the determination of abnormal states through a comprehensive data management system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If device monitoring data is analyzed based on a single railway vehicle, then the analysis system is simple to implement, but the number of reference data is small and determination precision is limited
Solution Approach 1:
The patent merges monitoring data from multiple railway vehicles into a centralized management system. The management device collects device monitoring data from plurality of railway vehicles and performs unified analysis, increasing the number of reference data points while maintaining systematic control through structured data integration
Solution Approach 2:
The management device serves multiple functions: collecting data from various vehicles, storing monitoring information, performing threshold crossing analysis, and generating comprehensive reports. This multi-functional approach enables precise abnormality determination across different vehicles while using a single unified system
2Measurement precision
If data is collected during normal operation with passengers, then operational data is obtained, but environmental conditions and operation conditions vary making data comparison difficult
Solution Approach 1:
The system performs preliminary data collection during special operations before normal service begins. By collecting device monitoring data during special operations when environmental conditions are controlled, the system prepares standardized reference data in advance, enabling accurate comparisons during normal operation without delaying service
Solution Approach 2:
The patent changes the operational parameters during data collection by performing special operations with specific controlled conditions. The system collects data when the vehicle is in a controlled state (no passengers, specific environmental conditions), creating standardized parameters that make data from different vehicles comparable
Data Source
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AI summary
A railway vehicle air conditioning management system according to the present invention includes a railway vehicle air-conditioning device installed in a railway vehicle, having a refrigerant circuit configured by including at least a compressor, a heat source side heat exchanger, a decompression device and a load side heat exchanger, and air-conditions an inside of the railway vehicle by circulating refrigerant in the refrigerant circuit, and a management device having a recording device in which vehicle air conditioning data including data showing operating states of the railway vehicle air-conditioning devices in a plurality of the railway vehicles are recorded, the railway vehicle air-conditioning device performs a special operation of operating in a pattern set in advance, in a state without humans in the railway vehicle, and the management device causes the recording device to record the vehicle air conditioning data including data showing the operating state in the special operation.