Rotorcraft Sensor Noise Reduction via Operational Parameter Corrections
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Solution Overview
Problem
Rotorcraft sensor data is prone to noise due to operational parameters, making it difficult to accurately diagnose component degradation and leading to false alarms or missed issues in health monitoring systems.
Innovation Solution
A system and method that utilize a data server to acquire and adjust condition indicators by correlating operational parameters with sensor data, generating adjusted condition indicators to reduce noise and improve fault diagnosis accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If capture window ranges are widened to ensure data acquisition during normal operations, then data acquisition reliability is improved, but measurement precision deteriorates due to increased operational parameter variability introducing noise
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the capture window ranges based on operational parameters. Instead of using fixed wide ranges that introduce noise, the system adapts the capture window boundaries according to actual operational conditions, thereby maintaining data acquisition reliability while reducing operational variability noise and improving measurement precision of condition indicators.
2Measurement precision
If capture window ranges are narrowed to reduce operational parameter variability and noise, then measurement precision is improved, but data acquisition reliability deteriorates due to missed acquisitions during normal operations
Solution Approach 1:
The patent implements dynamics by making capture window ranges adaptive rather than static. The system dynamically adjusts capture window boundaries based on real-time operational parameters, allowing the windows to expand or contract according to operational conditions. This dynamic approach ensures sufficient data acquisition coverage for reliability while maintaining narrow enough ranges to minimize operational variability noise and preserve measurement precision.
3Adaptability or versatility
If operational parameter variability is increased to cover more operating conditions, then adaptability is improved, but measurement precision deteriorates due to increased noise in condition indicators
Solution Approach 1:
The patent applies parameter changes by using operational parameters to dynamically adjust capture window ranges. This allows the system to adapt to different operating conditions while maintaining precise measurements within each adapted window, effectively decoupling adaptability from measurement precision degradation.
4Measurement precision
If noise reduction techniques are applied to improve fault diagnosis accuracy, then measurement precision is improved, but device complexity increases due to additional processing requirements
Solution Approach 1:
The patent applies preliminary action by pre-defining capture window ranges and operational parameter thresholds before actual data acquisition. This preliminary configuration allows the system to perform noise reduction through simple range-based filtering during operation, improving fault diagnosis accuracy without requiring complex real-time processing algorithms, thereby minimizing additional device complexity.
Data Source
AI summary
A system and method for reducing data noise for vehicle monitoring sensors using parameter-based correction. The system includes a sensor operable to make a sensor reading and generate a sensor signal, and a data server operable to acquire a condition indicator model correlating operational parameters with condition indicators, and to acquire a current condition indicator according to the sensor signal, the data server further operable to generate an adjusted condition indicator by adjusting the current condition indicator according to the condition indicator model, and to determine whether an alert condition is indicated, according to at least the adjusted condition indicator, by a condition indicator set that includes the adjusted condition indicator, and to provide an alert in response to determining that the alert condition is indicated.