Condition monitoring of electrical cables as installed in industrial processes
First Claim
1. A method for verifying the performance and health of a plurality of instruments and processes, said method comprising:
- sampling data from a plurality of sensors, said sampled data corresponding to a plurality of signals each representing an output from one of said plurality of sensors;
storing said sampled data;
analyzing said sampled data, said step of analyzing including performing at least one analysis selected from a group including an analysis of an amplitude probability density, an analysis of a power spectral density, and an analysis of a time domain reflectometry;
using said analysis results to determine whether a corrective action is required; and
initiating said corrective action automatically when said step of using said analysis results determines said corrective action is required.
1 Assignment
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Accused Products
Abstract
A system and method for verifying the performance and health of wire systems and end devices, including instruments and processes. A computer runs software that collects data from sampled sensors, stores the data, screens the data for outliers, analyzes the data, performs in situ testing, and generates results of the analysis and testing. The system and method verifies not only the steady state performance of instruments, but also the dynamic performance of instruments and the transient behavior of the processes. In one embodiment, the system performs testing of the wiring system connecting the end devices located at the process. In another embodiment, the system also performs analysis of the amplitude probability density and a power spectral density determined from the sensor, or end device, data. In still another embodiment, the system performs a time domain reflectometry (TDR) analysis for a wiring system connecting an end device.
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Citations
12 Claims
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1. A method for verifying the performance and health of a plurality of instruments and processes, said method comprising:
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sampling data from a plurality of sensors, said sampled data corresponding to a plurality of signals each representing an output from one of said plurality of sensors; storing said sampled data; analyzing said sampled data, said step of analyzing including performing at least one analysis selected from a group including an analysis of an amplitude probability density, an analysis of a power spectral density, and an analysis of a time domain reflectometry; using said analysis results to determine whether a corrective action is required; and initiating said corrective action automatically when said step of using said analysis results determines said corrective action is required. - View Dependent Claims (2, 3, 4, 5)
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6. A method for verifying the performance and health of a plurality of instruments and processes, said method comprising the steps of:
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sampling data from a plurality of sensors associated with the plurality of instruments and processes to produce sampled data, said sampled data corresponding to a plurality of signals each representing an output from one of said plurality of sensors; storing said sampled data; qualifying said sampled data to determine whether said sampled data is an outlier; initiating a first corrective action when said step of qualifying said sampled data determines said sampled data is an outlier; analyzing said sampled data to produce analysis results when said step of qualifying said sampled data determines said sampled data is not an outlier, said step of analyzing said sampled data including performing at least one analysis selected from a group including an analysis of an amplitude probability density, an analysis of a power spectral density, and an analysis of a time domain reflectometry;
using said analysis results to determine whether a second corrective action is required; andinitiating said second corrective action when said step of using said analysis results determines said second corrective action is required. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification