Monitoring Unit Transfer Function for Linear Asset Positioning
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Solution Overview
Problem
The accuracy of monitoring linear assets using distributed sensors is compromised due to misalignment and varying distances between the sensor and the asset, leading to inaccurate positioning of detected signals.
Innovation Solution
A monitoring unit that includes a processing unit to apply a transfer function to the data signal from the distributed sensor, normalizing it with respect to the length and acoustic frequency response of the linear asset, thereby correcting for differences in sensor and asset lengths and sensor placement angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the distributed sensor is arranged along the linear asset, then the position of detected signals can be determined, but the accuracy of position determination decreases when the sensor is not perfectly aligned with the asset
Solution Approach 1:
The patent applies parameter changes by transforming the raw sensor data through a transfer function that incorporates calibration parameters. These parameters account for the misalignment between sensor and asset, allowing the system to compensate for positioning errors without requiring perfect physical alignment. The transfer function adjusts the relationship between sensor coordinates and asset coordinates based on pre-determined calibration data.
Solution Approach 2:
The patent introduces a transfer function as an intermediary mathematical model that mediates between the sensor measurements and the actual asset positions. This transfer function acts as a conversion layer that translates sensor coordinate system data into accurate asset coordinate system positions, eliminating the need for perfect alignment between sensor and asset.
2Measurement precision
If the distributed sensor length differs from the linear asset length, then the sensor can cover the asset, but the position accuracy decreases due to length mismatch
Solution Approach 1:
The transfer function incorporates length ratio parameters that scale and adjust the coordinate transformations between sensor and asset. By including the ratio of sensor length to asset length as a calibration parameter, the system compensates for length mismatches and maintains accurate position determination despite differences in physical dimensions.
3Measurement precision
If the distance between the distributed sensor and the linear asset varies along the asset length, then the sensor can be positioned flexibly, but the signal detection accuracy decreases
Solution Approach 1:
The transfer function includes distance compensation parameters that account for varying sensor-to-asset distances along the asset length. These parameters allow the system to correct for attenuation and geometric spreading effects that occur when the distance varies, maintaining consistent detection accuracy across the entire asset length despite flexible sensor positioning.
Data Source
AI summary
A monitoring unit for monitoring a linear asset includes a connection to a data output of a distributed sensor arranged along the linear asset, where the linear asset has a length which is different from the length of the distributed sensor, and a processing unit which is configured to receive a data signal provided by the distributed sensor, to apply a transfer function, to evaluate the data signal and to provide a tracking output signal. Evaluating the data signal includes running an evaluation algorithm, the transfer function is applied to the data signal or to the evaluation algorithm, and by applying the transfer function, the data signal or the evaluation algorithm is normalized. Furthermore, a method for monitoring a linear asset is provided.