Sensor based means of monitoring the mechanical condition of rotating machinery that operates intermittently
First Claim
1. A method of using a signal processor to identify a mechanical condition of a machine after receiving signals describing an operation of the machine from a sensor device;
- said method comprising;
having the signal processor receive the signals describing the operation of the machine;
said signals comprising characteristic signals and uncharacteristic signals;
said characteristic signals comprising information describing a steady state operation of the machine, and information describing interruptions of the operation of the machine, and information describing variations of the operation of the machine; and
said uncharacteristic signals comprising information describing the mechanical condition of said machine;
having the signal processor make statistically significant measurements on the signals;
have the signal processor the signal to detect an interruption to said steady state of the machine;
upon detecting the interruption, for a pre-determined time having the signal processor exclude said information describing interruptions of the operation of the machine and said information describing variations of the operation of the machine from said signals; and
having the signal processor identify said uncharacteristic signals and identify the mechanical condition of the machine.
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Accused Products
Abstract
A method of monitoring the mechanical condition of a machine in which statistically significant measurements on a characteristic signal are made over a period of time which can include interruptions and variations in the operation of the machine giving rise to uncharacteristic signals and the processing of the signal during the statistically significant measurement automatically excludes those parts of the signal associated with interruptions and variations in the operation of the machine. The invention also includes apparatus for carrying out the above method including a preamplifier, adapted to provide output to a further amplifier, adapted to provided output to dynamic enveloping circuitry, adapted to provide an output to an analogue to digital converter, adapted to provide an output to a digital micro-electronic device.
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Citations
14 Claims
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1. A method of using a signal processor to identify a mechanical condition of a machine after receiving signals describing an operation of the machine from a sensor device;
- said method comprising;
having the signal processor receive the signals describing the operation of the machine; said signals comprising characteristic signals and uncharacteristic signals; said characteristic signals comprising information describing a steady state operation of the machine, and information describing interruptions of the operation of the machine, and information describing variations of the operation of the machine; and said uncharacteristic signals comprising information describing the mechanical condition of said machine; having the signal processor make statistically significant measurements on the signals; have the signal processor the signal to detect an interruption to said steady state of the machine; upon detecting the interruption, for a pre-determined time having the signal processor exclude said information describing interruptions of the operation of the machine and said information describing variations of the operation of the machine from said signals; and having the signal processor identify said uncharacteristic signals and identify the mechanical condition of the machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14)
- said method comprising;
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13. A method of as defined in claimed 1, wherein linear movement(s) of the machine is/are involved.
Specification