System for Measuring Velocity and Acceleration Peak Amplitude (PeakVue) on a Single Measurement Channel

摘要

The system implements an algorithm that allows an integrator providing a vibration velocity measurement to be disabled automatically in order to do a PeakVue measurement. When the PeakVue measurement is required, the integrator is disabled and the last Overall velocity measurement is maintained. Once the PeakVue measurement is complete, the integrator is re-enabled and the Overall measurements resume.

主权项

1. A vibration measurement system for continuously monitoring vibration levels of a machine, the system having multiple measurement channels for measuring vibration at one or more locations on the machine, at least one of the multiple measurement channels comprising:
an acceleration sensor attached to the machine for sensing machine vibration and generating an analog acceleration signal based on the machine vibration; an integrator for receiving the analog acceleration signal and generating an analog velocity signal based thereon; and a switch for receiving the analog acceleration signal and the analog velocity signal, the switch having a first position in which the analog velocity signal is selected, and a second position in which the analog acceleration signal is selected,
wherein the switch normally maintains the first position, during which time the system continuously monitors the analog velocity signal or a signal derived from the analog velocity signal to assess an operating condition of the machine, andwherein the switch is operable to be momentarily set to the second position, during which time monitoring of the analog velocity signal is interrupted to provide for momentary measurement of the analog acceleration signal; and selection logic that generates a first control signal based at least in part on one or more input signals that indicate a state of the machine, wherein the first control signal causes the switch to be in the first position or the second position.