Railcar Auxiliary Power Monitoring for Sequential Device State Recording
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing data collection systems for railroad cars cannot record the state of in-vehicle devices that are not operating, limiting the recording of operation states to only some devices.
Innovation Solution
A data collection system comprising a monitoring device that instructs in-vehicle devices to start and stop operating sequentially, and an auxiliary power supply that measures and records output voltage and current during these operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery-powered recording device is used to record operation states during power-on situations, then stable recording under unstable power conditions is achieved, but the state of devices that are not operating cannot be recorded
Solution Approach 1:
The monitoring device issues start instructions to in-vehicle devices before actual operation begins, and stop instructions after operation ends. This preliminary action allows the auxiliary power supply to measure and record voltage and current data during transitions and idle states, capturing device states that would otherwise be missed by traditional continuous operation monitoring.
Solution Approach 2:
The system uses sequential periodic instruction cycles where the monitoring device systematically instructs multiple in-vehicle devices to start and stop operating in turns. The auxiliary power supply measures voltage and current at each periodic cycle, enabling comprehensive recording of all devices including those in non-operating states across different time periods.
2Reliability
If periodic inspection of devices is performed to prevent failure, then device reliability is maintained, but large amounts of labor and cost are required
Solution Approach 1:
The system enables self-service monitoring where the auxiliary power supply automatically measures voltage and current of in-vehicle devices during their operation cycles, and the monitoring device automatically records this data. This automated self-monitoring eliminates the need for manual periodic inspections, reducing labor and time while maintaining device reliability through continuous data collection.
Solution Approach 2:
The system establishes a feedback loop where the auxiliary power supply continuously measures electrical parameters, the monitoring device records the data, and this information can be analyzed to detect potential failures. This feedback mechanism replaces manual inspection by providing continuous automated monitoring that alerts to potential issues before they become failures.
3Loss of information
If in-vehicle devices operate continuously for data collection, then comprehensive operation data is obtained, but energy consumption increases
Solution Approach 1:
Instead of continuous operation, the system uses periodic sequential instruction cycles where devices are instructed to start and stop in turns. The auxiliary power supply measures voltage and current during these periodic measurement intervals, capturing comprehensive data across all devices while allowing them to remain in low-power states between measurements, thus reducing overall energy consumption.
Solution Approach 2:
The system dynamically adjusts the operation state of in-vehicle devices based on measurement needs. Devices are instructed to operate only when their data needs to be collected, and remain in standby or off states otherwise. This dynamic control optimizes the balance between data completeness and energy consumption by activating devices only when necessary for measurement.
Data Source
AI summary
A data collection system includes: a monitoring device that sequentially instructs two or more in-vehicle devices installed in a railroad car to start operating and to stop operating; and an auxiliary power supply that sequentially measures an output voltage and an output current while the in-vehicle devices operate in turns in accordance with an instruction from the monitoring device, and records measurement results.