Remote Operation Condition Estimation Using Compressed Waveform Data
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Solution Overview
Problem
Existing signal processing systems face challenges in estimating operation conditions of multiple electric devices in detail at a remote location while minimizing data transmission, as they either require extensive infrastructure for detailed condition determination or overwhelm communication capacity with large data volumes.
Innovation Solution
A signal processing system comprising a measurement apparatus that detects and converts analog current and voltage waveform data into digital data, which is then transmitted and processed to estimate operation conditions, incorporating features like sampling, normalization, and data compression to reduce data volume and enhance communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed condition determination is performed using identification models stored in a database, then measurement precision is improved, but device complexity increases due to the need for monitoring apparatus at each facility
Solution Approach 1:
The patent segments the monitoring system into two parts: a measurement apparatus at the facility that collects data, and a server at a remote location that performs detailed analysis using identification models. This segmentation allows detailed condition determination without requiring complex apparatus at each facility.
Solution Approach 2:
The patent introduces communication channels as intermediaries to transmit measurement data from the facility to the remote server. This intermediary enables detailed analysis at a remote location without requiring physical presence of monitoring apparatus at each facility.
2Measurement precision
If measurement data is transmitted to a remote server through communication channels for detailed analysis, then measurement precision is improved, but the amount of transmitted data becomes enormous, restricting communication capacity
Solution Approach 1:
The patent extracts only the essential measurement data needed for condition determination and transmits it to the remote server, rather than transmitting all raw data. This extraction reduces the amount of transmitted data while maintaining the ability to perform detailed analysis.
Solution Approach 2:
The patent performs preliminary processing of measurement data at the measurement apparatus before transmission, preparing the data in a format that reduces its volume while preserving the information needed for accurate condition determination.
3Ease of operation
If threshold value determination is used for device estimation, then ease of operation is improved, but measurement precision deteriorates as only two values of conditions can be ascertained
Solution Approach 1:
The patent changes from using simple threshold values to using identification models with multiple parameters that can represent detailed operation conditions. This allows the system to maintain ease of operation through automated analysis while achieving high measurement precision in determining device states.
Data Source
AI summary
A signal processing system is provided and includes: a measurement apparatus that measures current and voltage which are supplied to a plurality of electric devices; and a processing apparatus that is connected to the measurement apparatus that estimates operation conditions of the respective electric devices. The measurement apparatus includes a detection unit that detects analog waveform data, a conversion unit that samples the analog waveform data and converts the sampled analog waveform data into digital waveform data, and a transmission unit that transmits the digital waveform data to the processing apparatus. The processing apparatus includes a reception unit that receives the digital waveform data, a storage unit that stores the digital waveform data, a separation unit that separates the stored digital waveform data into pieces, and an operation estimation unit that analyzes the pieces of digital waveform data and estimates the operation conditions.