Operation recording system, vehicle, operation recording method and operation recording program
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Solution Overview
Problem
Existing compressor abnormality detection systems lack the capability for detailed analysis due to limited memory capacity, leading to potential inaccuracies in detecting compressor abnormalities.
Innovation Solution
An operation recording system that acquires and records temperature, voltage, and current information at predetermined positions in the inverter circuit, associating this data with time information for comprehensive abnormality analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a memory with small capacity is mounted in the compressor, then the device complexity is reduced, but the ability to store sufficient operation state data for detailed abnormality analysis is insufficient
Solution Approach 1:
The patent extracts the data storage function from the compressor by recording operation state data in an external storage medium (server or external memory) rather than relying solely on the onboard memory. This allows the compressor to maintain simple hardware while enabling comprehensive data collection for abnormality analysis through the recording unit that stores data in association with time information.
2Measurement precision
If only simple abnormality detection (voltage threshold comparison) is performed, then the detection speed is fast, but the accuracy and detail of abnormality analysis is insufficient
Solution Approach 1:
The patent performs preliminary action by continuously recording operation state data (voltage, current, temperature) in association with time information before abnormality detection is needed. This pre-recorded data enables detailed post-event analysis without requiring complex real-time detection algorithms, thus improving accuracy while maintaining relatively simple system complexity.
Solution Approach 2:
The patent introduces an intermediary recording unit that stores operation state data with time information association. This intermediary layer between the sensor and the analysis system enables detailed abnormality analysis by providing comprehensive historical data, without requiring direct complex processing in the detection system itself.
3Loss of information
If detailed operation state data is recorded continuously, then the abnormality analysis capability is improved, but the data management complexity and storage requirements increase
Solution Approach 1:
The patent uses an intermediary recording unit with time information association as a mediator between data collection and data management. By recording data in structured units with time stamps, the system enables efficient data retrieval and management without requiring complex continuous processing, thus improving information retention while controlling data management complexity.
Data Source
AI summary
Provided are an operation recording system, a vehicle, an operation recording method and an operation recording program which make it possible to perform an abnormality analysis of a highly accurate compressor. An operation recording system to be used in an electric compressor of a vehicle air-conditioning system equipped with an inverter circuit (50), said system being equipped with: an acquisition unit for acquiring, as abnormality reference information, at least one type of information from among temperature information at a prescribed position in the inverter circuit (50). voltage information at a prescribed position in the inverter circuit (50) and electric current information at a prescribed position in the inverter circuit (50); and a recording processing unit for recording the abnormality reference information and time information which can be associated with said abnormality reference information in a prescribed recording unit.