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US 11,887,465 B2Granted
Methods, systems, and computer programs for alarm handling
AssigneeYokogawa Electric Corporation
InventorsKaushik Ghosh, Gokula Krishnan Sivaprakasam
Life of this patent
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Abstract
A method comprises identifying an alarm event pattern within a log of alarm events that occur within a process control system, determining that a current alarm event within the process control system belongs to the alarm event pattern, determining one or more actions for resolving the current alarm event based on the alarm event pattern, and implementing the one or more actions to resolve the current alarm event.
Claims19
A method, comprising:
- identifying an alarm event pattern within a log of alarm events that occur within a process control system;
- determining that a current alarm event within the process control system belongs to the alarm event pattern;
- determining one or more actions for resolving the current alarm event based on the alarm event pattern;
- and
- implementing the one or more actions to resolve the current alarm event,
- wherein the alarm event pattern is identified by:
- identifying a first occurrence of a first alarm event within the log of alarm events;
- assigning a time window to the first occurrence of the first alarm event;
- identifying a first occurrence of a second alarm event that falls within the time window;
- performing one or more operations to calculate at least one probability value for the time window;
- and
- determining whether the first and second alarm events are associated with one another as at least part of the alarm event pattern based on the at least one probability value calculated for the time window.
9 more elements
A device, comprising:
- processing circuitry configured to:
- identify an alarm event pattern within a log of alarm events that occur within a process control system;
- determine that a current alarm event within the process control system belongs to the alarm event pattern;
- determine one or more operator actions for resolving the current alarm event based on the alarm event pattern;
- and
- generate a control signal that causes the process control system to implement the one or more operator actions to resolve the current alarm event,
- wherein determining the one or more operator actions for resolving the current alarm event based on the alarm event pattern comprises:
- identifying occurrences of a first alarm event within the log of alarm events;
- assigning time windows to the occurrences of the first alarm event based on notification times and recovery times of the occurrences;
- identifying operator actions within each time window;
- performing one or more operations to calculate at least one probability value for the time windows;
- and
- determining whether to associate the operator actions and the first alarm event with one another based on the at least one probability value calculated for the time windows.
10 more elements
A system, comprising:
- an output device;
- and
- processing circuitry configured to:
- identify an alarm event pattern within a log of alarm events that occur within a process control system;
- determine that a current alarm event within the process control system belongs to the alarm event pattern;
- determine one or more operator actions for resolving the current alarm event based on the alarm event pattern;
- and
- render, to the output device, an ordered sequence of the operator actions that resolve the current alarm event,
- wherein the alarm event pattern is identified by:
- identifying a first occurrence of a first alarm event within the log of alarm events;
- assigning a time window to the first occurrence of the first alarm event;
- identifying a first occurrence of a second alarm event that falls within the time window;
- performing one or more operations to calculate at least one probability value for the time window;
- and
- determining whether to associate the first and second alarm events with one another as at least part of the alarm event pattern based on the at least one probability value calculated for the time window.
12 more elements
Dependencies are inferred from the claim text.