Processing Machinery Protection and Fault Prediction Data Natively in a Distributed Control System

摘要

A vibration data acquisition and analysis module is operable to be inserted directly into a distributed control system (DCS) I/O backplane, so that processed vibration parameters may be scanned directly by the DCS I/O controller. Because the process data and the vibration data are both being scanned by the same DCS I/O controller, there is no need to integrate numerical data, binary relay outputs, and analog overall vibration level outputs from a separate vibration monitoring system into the DCS. The system provides for: (1) directly acquiring vibration data by the DCS for machinery protection and predictive machinery health analysis; (2) direct integration of vibration information on DCS alarm screens; (3) acquisition and display of real time vibration data on operator screens; (4) using vibration data to detect abnormal situations associated with equipment failures; and (5) using vibration data directly in closed-loop control applications.

主权项

1. A machinery health monitoring module that processes machine vibration data based on vibration signals and provides the machine vibration data to a distributed control system, the machinery health monitoring module comprising:
signal conditioning circuitry having an interface for receiving a plurality of analog vibration signals from a plurality of sensors attached to a machine, amplification and filter circuitry for conditioning the plurality of analog vibration signals, and analog-to-digital conversion circuitry for converting the plurality of analog vibration signals into a plurality of digital vibration signals; processing circuitry in electrical communication with the signal conditioning circuitry, the processing circuitry comprising a plurality of parallel digital signal processing channels, each channel for processing a corresponding one of the plurality of digital vibration signals to generate multiple scalar vibration values per channel and at least one vibration time waveform per channel; and logic generator circuitry in electrical communication with the processing circuitry, the logic generator circuitry operable to receive the multiple scalar vibration values and the at least one vibration time waveform, and operable to format at least the multiple scalar vibration values according to an input/output data protocol that is native to the distributed control system.