Integrated vibration measurement and analysis system

摘要

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.

主权项

1. A real-time signal conversion apparatus for use in measuring machine characteristics that are indicative of a machine fault condition or machine performance, the signal conversion apparatus comprising:
a first sensor for sensing a machine characteristic at a first position and generating a first analog signal; a second sensor for sensing a machine characteristic at a second position and generating a second analog signal; analog-to-digital conversion (ADC) circuits comprising at least:
a first ADC circuit for sampling the first analog signal to generate a first digital signal; anda second ADC circuit for sampling the second analog signal to generate a second digital signal,wherein the first and second digital signals are indicative of machine performance or a machine fault condition; an integrated circuit component having at least two parallel channels for simultaneously processing the first digital signal in parallel with the second digital signal, the first digital signal in parallel with the first digital signal, or the second digital signal in parallel with the second digital signal, the at least two parallel channels including:
a first channel for processing the first digital signal or the second digital signal; anda second channel for processing the first digital signal or the second digital signal; and a cross-point switching device that is operable to provide the first digital signal to the first or second channels, and to provide the second digital signal to the first or second channels; wherein the first and second channels each include:
a first integrator for integrating the first or second digital signals;a first integrator bypass switch for selectively bypassing the first integrator for applications in which a first stage of integration is not needed;a second integrator in series with the first integrator, the second integrator for integrating the first or second digital signals; anda second integrator bypass switch for selectively bypassing the second integrator for applications in which a second stage of integration is not needed.