Selective decimation and analysis of oversampled data

An oversampling, data technology, applied in measuring devices, instruments, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as low advection or attenuation, non-inclusion, etc.

Active Publication Date: 2014-10-29
EMERSON ELECTRIC US HLDG CHILE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

These envelope methods differ from peak filtering and decimation filtering in that said envelope methods inherently have m

Method used

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  • Selective decimation and analysis of oversampled data
  • Selective decimation and analysis of oversampled data
  • Selective decimation and analysis of oversampled data

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Embodiment Construction

[0234] The following are some abbreviations used in the description of the embodiments of the invention:

[0235] AVE - A measure of type mean, e.g. average;

[0236] MAX - the absolute maximum peak value, or the average of two or three actual maximum or absolute maximum values ​​representing the maximum value;

[0237] MAX-MIN – a series of characteristics that usually represent the difference between the maximum and minimum values;

[0238] MED - the median, also the 50th percentile value within the cumulative distribution;

[0239] MIN - the absolute minimum, or the average of two or three actual or absolute minimums representing the minimum;

[0240] MODE - A measurement of the mode value type, such as the most common value over the entire range of sampling intervals, or a narrow range of most common values;

[0241] OPC - the operation of the sensor or circuit;

[0242] Oversampled data (Oversampled data) - at a frequency greater than the maximum frequency of data acq...

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Abstract

Useful and meaningful machine characteristic information may be derived through analysis of oversampled digital data collected using dynamic signal analyzers, such as vibration analyzers. Such data have generally been discarded in prior art systems. In addition to peak values and decimated values, other oversampled values are used that are associated with characteristics of the machine being monitored and the sensors and circuits that gather the data. This provides more useful information than has previously been derived from oversampled data within a sampling interval.

Description

technical field [0001] The invention relates to the field of machine performance and failure analysis. More particularly, the invention relates to the analysis of oversampled data from one or more dynamic transducers in inductive contact with a machine. [0002] Related applications [0003] This application claims priority to co-pending Provisional Patent Application Serial No. 61 / 816,974, entitled "Selective Extraction and Analysis of Oversampled Data," filed April 29, 2013, in its entirety Incorporated herein by reference. Background technique [0004] Modern mechanical analyzers, such as vibration analyzers, typically oversample dynamic digital data at sampling rates many times greater than the maximum frequency (FMAX) of data acquisition. Oversampled data is typically scaled to the desired frequency by decimation filtering or peak filtering. One or the other of these methods is typically used to scale the acquired oversampled data to a single scalar value during the...

Claims

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Application Information

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IPC IPC(8): G01H17/00
Inventor R·E·加维三世J·A·弗尔巴S·V·鲍尔斯三世R·D·斯凯伊里克H·霍尔特曼斯波特M·D·梅德利K·斯蒂尔D·A·曼恩
Owner EMERSON ELECTRIC US HLDG CHILE
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