Integrated vibration measurement and analysis system

Abstract

A vibration data collection system performs an integration or differentiation process on incoming digitized vibration data in real time. The system uses a digital Infinite Impulse Response (IIR) filter running at the input data rate to provide the integration or differentiation function. With this approach, the system reduces hardware complexity and data storage requirements. Also, the system provides the ability to directly integrate or differentiate stored time waveforms without resorting to FFT processing methods.

Description

technical field

[0001] The invention relates to the field of detecting mechanical, electrical and electromagnetic fault states of machines by measuring machine vibrations in running machines, in particular to a system for real-time digital processing of time-domain signals reflecting machine vibrations. Background technique

[0002] Problems with conventional analog integration in machine monitoring systems:

[0003] Achieving conversion from one vibration-related signal, such as acceleration, to another, such as velocity or displacement, is a common requirement in vibration monitoring systems. A typical example could be the conversion from acceleration to velocity by integrating the acceleration signal. Similarly, the opposite conversion can be achieved by differentiating the velocity signal. In the past, these conversions have been accomplished using analog hardware filters. Such transformations can also be performed by software that performs a Fast Fourier Transform (F...

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