System and method for fault analysis and prioritization

• US 10,289,107 B2
• Filed: 05/28/2015
• Issued: 05/14/2019
• Est. Priority Date: 05/28/2014
• Status: Active Grant

• Current Assignee: Siemens Schweiz AG (Siemens AG)
• Original Assignee: Siemens Schweiz AG (Siemens AG)
• Inventors: Warner, Gregory C., Cohen, Henrik, Gartner, Robert
• Primary Examiner(s): Rampuria, Satish
• Application Number:
  US15/307,342
• Publication Number:
  US 20170052536A1
• Time in Patent Office: 1,447 Days
• Field of Search: 700 79- 89
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 2219/24048 Remote test, monitoring, diagnostic
• CPC Class Codes: G05B 2219/2642 Domotique, domestic, home control, automation, smart house
• CPC Class Codes: G05B 23/0208 characterized by the configuration of the monitoring system
• CPC Class Codes: G05B 23/0224 Process history based detection method, e.g. whereby history implies the availability of large amounts of data
• CPC Class Codes: G06Q 10/06312 Adjustment or analysis of established resource schedule, e.g. resource or task levelling, or dynamic rescheduling
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: Y02P 90/845 Inventory and reporting systems for greenhouse gases [GHG]

Abstract

Methods for system management and corresponding systems and computer-readable mediums. A method includes detecting, in the management system, a fault condition in a management system device during an analysis period. The method includes determining the duration of the fault condition in the management system device during the analysis period. The method includes determining a total duration of a system state during the analysis period in which the management system device could produce the fault condition. The method includes assigning a prioritization to the fault condition according to the duration of the fault condition and the total duration of the system state. The method includes storing the prioritization of the fault condition.

Claims

1. A method for fault analysis in a building management system, comprising:

detecting, in the building management system, a fault condition in a management system device during an analysis period;

determining, by the building management system, the duration of the fault condition in the management system device during the analysis period;

determining, by the building management system, a total duration of a system state during the analysis period in which the management system device could produce the fault condition;

assigning a prioritization to the fault condition, by the building management system, according to the duration of the fault condition and the total duration of the system state;

storing the prioritization for operating the building management system;

wherein a plurality of fault conditions for different management system devices are detected, and the plurality of fault conditions are ranked according to the respective prioritizations; and

wherein the total duration of the system state during the analysis period in which the management system device could produce the fault condition is less than the total analysis period.

2. The method of claim 1, wherein the prioritization is assigned according to a ratio of the duration of the fault condition to the total duration.

3. The method of claim 1, wherein the management system is a building management system and the system state is one of heating, cooling, ventilating, access control, intrusion detection, lighting, or elevator operation.

4. The method of claim 1, wherein the management system device is one of a boiler, management station, chiller, pump, valve, thermostat, fire panel, smoke detector, meter, motor, fan, fire sensor, smoke sensor, temperature sensor, lighting equipment, intrusion sensor, elevator sensor, or controller.

5. The method of claim 1, wherein a higher prioritization is assigned to a fault condition with a higher ratio of the duration of the fault condition to the total duration.

6. A building management system comprising:

a processor; and

an accessible memory, the processor particularly configured to perform by;

detecting a fault condition in a management system device during an analysis period;

determining the duration of the fault condition in the management system device during the analysis period;

determining a total duration of a system state during the analysis period in which the management system device could produce the fault condition;

assigning a prioritization to the fault condition according to the duration of the fault condition and the total duration of the system state;

storing the prioritization for operating the building management system;

wherein a plurality of fault conditions for different management system devices are detected, and the plurality of fault conditions are ranked according to the respective prioritizations; and

wherein the total duration of the system state during the analysis period in which the management system device could produce the fault condition is less than the total analysis period.

7. A non-transitory computer-readable medium encoded with executable instructions that, when executed, cause one or more processors to perform by:

detecting a fault condition in a management system device during an analysis period;

determining the duration of the fault condition in the management system device during the analysis period;

determining a total duration of a system state during the analysis period in which the management system device could produce the fault condition;

assigning a prioritization to the fault condition according to the duration of the fault condition and the total duration of the system state;

storing the prioritization for operating a building management system;

wherein a plurality of fault conditions for different management system devices are detected, and the plurality of fault conditions are ranked according to the respective prioritizations; and

wherein the total duration of the system state during the analysis period in which the management system device could produce the fault condition is less than the total analysis period.