Patent ID: 7444265
Filing Date: 2008-10-28
Classification: G01H,G01M

Abstract:
1. A method of monitoring the status of a rotating machine and/or of a process run on the machine, the method comprising: measuring and storing a plurality of parameters containing information about the status of the machine and/or process, wherein said plurality of measured parameters contains information about the mechanical condition of a moving part of the machine, and wherein said moving part is a bearing of the machine and said plurality of measured parameters include vibrations in said bearing; sensing said vibrations and producing corresponding vibration signal data; determining a loading of the machine by measuring at least one signal representing an operating condition of the machine and/or a parameter of a process run on the machine; measuring said at least one signal simultaneously with said vibration signal data; storing said at least one measured signal together with said vibration signal data; selecting for further processing for monitoring purposes said vibration signal data related to said measured operating condition and/or process parameter according to a first predetermined criterion; extracting from a database a corresponding plurality of stored reference values for said measured parameters according to a second predetermined criterion; and comparing said plurality of measured parameters with said corresponding plurality of stored reference values for determining the status of the machine and/or the process.