Tool for sensor management and fault visualization in machine condition monitoring

• US 7,183,905 B2
• Filed: 09/02/2004
• Issued: 02/27/2007
• Est. Priority Date: 09/05/2003
• Status: Active Grant

• Current Assignee: Siemens AG, Siemens Energy Incorporated (Siemens AG)
• Original Assignee: Siemens Corporate Research Incorporated (Siemens AG), Siemens Power Generation, Inc.
• Inventors: Fang, Ming, Neubauer, Claus, Yuan, Chao, Cheng, Jie, Cataltepe, Zehra, McCorkle, Wesley
• Primary Examiner(s): Pope; Daryl C
• Application Number:
  US10/932,576
• Publication Number:
  US 20050062599A1
• Time in Patent Office: 908 Days
• Field of Search: 340/506, 340/507, 340/511, 340/517, 340/521, 340/524, 340/3.1, 340/825.36, 340/825.49
• US Class Current: 340/506
• CPC Class Codes: G05B 23/0272 Presentation of monitored results, e.g. selection of status reports to be displayed; Filtering information to the user
• CPC Class Codes: Y04S 10/52 Outage or fault management, e.g. fault detection or location

Abstract

A tool for sensor management and fault visualization in machine condition monitoring. The method and system are able to monitor a plurality of sensors at one time. The sensors may be used in a power plant system monitoring system. The method and system may display a fault status for each sensor in the plurality of sensors in a single display, wherein the fault status for each sensor is displayed over time. The method and system also provide a mechanism that permits a user to examine details of each sensor in the plurality of sensors at any given time. In addition, the method and system are capable of categorizing each fault in the fault status using one or more properties or categorizing criteria. The method and system also permit sensors to be tested such that different operating models may be examined by utilizing different sensors.

Claims

1. A method of managing a plurality of sensors comprising:

displaying a fault status of each sensor in the plurality of sensors in a single display, wherein the display includes a plot comprising a continuous time axis along which data estimates or data residuals computed on the basis of a statistical model of at least one of the sensors are plotted, and wherein, if a fault occurs for a particular sensor in the plurality of sensors, the fault status indicates a time when the fault occurred for the particular sensor and a duration of the fault for the particular sensor;

providing a mechanism for examining details of each sensor in the plurality of sensors; and

categorizing each fault in the fault status using one or more categorizing criteria.

2. The method of claim 1, wherein the mechanism for examining details of each sensor in the plurality of sensors is an active link that permits a user to access the link to examine the details of the sensor.

3. The method of claim 2, wherein the details that are examined are selected from data from the sensor, estimates for the sensor, residuals of the sensor, or a combination thereof.

4. The method of claim 1, wherein the categorizing criteria are selected from a type of sensor at fault, a type of fault, a severity of the fault, or a combination thereof.

5. The method of claim 4, wherein the type of sensor at fault is selected from an input sensor, an output sensor, an independent sensor, or a dependent sensor.

6. The method of claim 4, wherein the type of fault is selected from an out-of-range fault, an actual fault, a sign of the fault, or a combination thereof.

7. The method of claim 1, further comprising the step of:

permitting an alarm to be activated if one or more sensors is displaying a fault.

8. The method of claim 1, further comprising the step of:

providing a mechanism for testing each sensor in the plurality of sensors.

9. A machine-readable storage having stored thereon, a computer program having a plurality of code sections, said code sections executable by a machine for causing the machine to perform the steps of:

displaying a fault status of each sensor in the plurality of sensors in a single display, wherein the display includes a plot comprising a continuous time axis along which data estimates or data residuals computed on the basis of a statistical model of at least one of the sensors are plotted, and wherein, if a fault occurs for a particular sensor in the plurality of sensors, the fault status indicates a time when the fault occurred for the particular sensor and a duration of the fault for the particular sensor;

providing a mechanism for examining details of each sensor in the plurality of sensors; and

categorizing each fault in the fault status using one or more categorizing criteria.

10. The machine-readable storage of claim 9, wherein the mechanism for examining details of each sensor in the plurality of sensors is an active link that permits a user to access the link to examine the details of the sensor.

11. The machine-readable storage of claim 10, wherein the details that are examined are selected from data from the sensor, estimates for the sensor, residuals of the sensor, or a combination thereof.

12. The machine-readable storage of claim 9, wherein the categorizing criteria are selected from a type of sensor at fault, a type of fault, a severity of the fault, or a combination thereof.

13. The machine-readable storage of claim 12, wherein the type of sensor at fault is selected from an input sensor, an output sensor, an independent sensor, or a dependent sensor.

14. The machine-readable storage of claim 12, wherein the type of fault is selected from an out-of-range fault, an actual fault, a sign of the fault, or a combination thereof.

15. The machine-readable storage of claim 9, wherein the machine-readable storage is able to perform the step of permitting an alarm to be activated if one or more sensors is displaying a fault.

16. The method of claim 9, wherein the machine-readable storage is able to perform the step of providing a mechanism for testing each sensor in the plurality of sensors.

17. A system for managing a plurality of sensors comprising:

a display for displaying a fault status of each sensor in the plurality of sensors, wherein the display is configured to include a plot comprising a continuous time axis along which data estimates or data residuals computed on the basis of a statistical model of at least one of the sensors are plotted, and wherein, if a fault occurs for a particular sensor in the plurality of sensors, a fault status for the particular sensor indicates a time when the fault occurred and a duration of the fault;

a mechanism for examining details of each sensor in the plurality of sensors; and

a system for categorizing each fault in the fault status using one or more categorizing criteria.

18. The system of claim 17, wherein the mechanism for examining details of each sensor in the plurality of sensors is an active link that is capable of permitting a user to access the link to examine the details of the sensor.

19. The system of claim 18, wherein the details that are examined are selected from data from the sensor, estimates for the sensor, residuals of the sensor, or a combination thereof.

20. The system of claim 17, wherein the categorizing criteria are selected from a type of sensor at fault, a type of fault, a severity of the fault, or a combination thereof.

21. The system of claim 20, wherein the type of sensor at fault is selected from an input sensor, an output sensor, an independent sensor, or a dependent sensor.

22. The system of claim 20, wherein the type of fault is selected from an out-of-range fault, an actual fault, a sign of the fault, or a combination thereof.

23. The system of claim 17, further comprising an alarm.

24. The system of claim 17, further comprising a mechanism for testing each sensor in the plurality of sensors.