Storing Analytical Machine Data Based on Change in Scalar Machine Data Indicating Alert Condition
First Claim
1. A method for collecting and storing analytical vibration data in memory of a machine vibration monitoring device, the method comprising:
- (a) storing one or more alert threshold levels in the memory of the machine vibration monitoring device, each alert threshold level comprising a scalar value indicating a threshold between two predefined machine operational condition ranges;
(b) measuring vibration levels of the machine using one or more sensors;
(c) based on the measured vibration levels, calculating a scalar vibration value using a processor in the machine vibration monitoring device;
(d) comparing the scalar vibration value to one or more of the alert threshold levels using the processor in the machine vibration monitoring device; and
(e) if it is determined in step (d) that the scalar vibration value exceeds one or more of the alert threshold levels that the scalar vibration value did not exceed previously, storing analytical vibration data in the memory of the machine monitoring device for subsequent acquisition by a host computer.
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Abstract
A “store on alert” vibration data acquisition mechanism uses scalar data produced by a vibration monitoring device as a predicate to capturing and storing analytical vibration data in the vibration monitoring device. The scalar data may consist of scalar process variables generated in the vibration monitoring device that are acquired at a fixed interval, such as PeakVue and Overall Vibration. At each interval, these scalar data values are compared to machine performance threshold levels, such as ADVISE, MAINT and FAIL, to determine whether analytical vibration data is to be stored separately inside the vibration monitoring device. Since the analytical vibration data is captured based on a predicate inside the vibration monitoring device (i.e., comparison of the scalar value to the thresholds), the analytical vibration data includes more relevant diagnostic information about a specific machine performance event.
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Citations
18 Claims
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1. A method for collecting and storing analytical vibration data in memory of a machine vibration monitoring device, the method comprising:
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(a) storing one or more alert threshold levels in the memory of the machine vibration monitoring device, each alert threshold level comprising a scalar value indicating a threshold between two predefined machine operational condition ranges; (b) measuring vibration levels of the machine using one or more sensors; (c) based on the measured vibration levels, calculating a scalar vibration value using a processor in the machine vibration monitoring device; (d) comparing the scalar vibration value to one or more of the alert threshold levels using the processor in the machine vibration monitoring device; and (e) if it is determined in step (d) that the scalar vibration value exceeds one or more of the alert threshold levels that the scalar vibration value did not exceed previously, storing analytical vibration data in the memory of the machine monitoring device for subsequent acquisition by a host computer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for collecting and storing analytical vibration data in memory of a machine vibration monitoring device, the method comprising:
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(a) storing one or more alert threshold levels in memory of a host computer that is in communication with the machine vibration monitoring device, each alert threshold level comprising a scalar value indicating a threshold between two predefined machine operational condition ranges; (b) measuring vibration levels of the machine using one or more sensors; (c) storing analytical vibration data in the memory of the machine monitoring device; (d) based on the measured vibration levels, calculating a scalar vibration value using a processor in the machine vibration monitoring device and storing the scalar vibration value in the memory of the machine monitoring device for subsequent acquisition by the host computer; (e) the host computer acquiring the scalar vibration value from the memory of the machine vibration monitoring device and comparing the scalar vibration value to one or more of the alert threshold levels using a processor in the host computer; and (f) if it is determined in step (e) that the scalar vibration value exceeds one or more of the alert threshold levels that the scalar vibration value did not exceed previously, the host computer acquiring the analytical vibration data from the memory of the machine vibration monitoring device and storing the analytical vibration data in the host computer or in a database that is in communication with the host computer. - View Dependent Claims (18)
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11. An apparatus for collecting and storing analytical vibration data, the apparatus comprising:
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a machine vibration monitoring device comprising; memory for storing one or more alert threshold levels, each alert threshold level comprising a scalar value indicating a threshold between two predefined machine operational condition ranges; one or more sensors for measuring vibration levels of the machine; a processor for calculating a scalar vibration value based on the measured vibration levels, for comparing the scalar vibration value to one or more of the alert threshold levels, and for storing analytical vibration data in the memory of the machine monitoring device if the scalar vibration value exceeds one or more of the alert threshold levels that the scalar vibration value did not exceed previously; and one or more host computers for acquiring the analytical vibration data that was stored in the memory of the machine vibration monitoring device. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification