Method for alarm handling in a processing system
AssigneeABB Schweiz AG
InventorsHeiko Koziolek, Julius Rueckert, Benedikt Schmidt, Benjamin Kloepper
Life of this patent
Estimating the term…
Abstract
A method for providing an attribute of an element in a processing system having a plurality of elements, the processing system being represented as a directed graph having a plurality of nodes and directed edges, each node representing an element, each node having an attribute, and each directed edge representing a relation between two elements of the plurality of elements, the method including: selecting one node of the plurality of nodes as a starting node; constructing a subgraph, the subgraph including all the nodes that are forward-connected by at least one directed edge from the starting node; and outputting all nodes and the attribute of the nodes of the subgraph.
Claims15
A method for providing an attribute of an element in an industrial plant or an industrial processing system comprising a plurality of elements, the elements comprising actuators and/or sensors of the industrial processing system, the processing system being represented as a directed graph which is based on a process flow diagram (PFD) and/or a piping and instrumentation diagram (P&ID), the directed graph comprising a plurality of nodes and directed edges, each node representing an element, each node having an attribute, and each directed edge representing a relation between two elements of the plurality of elements, the method comprising:
- receiving, from a monitoring system and/or operator, an alarm;
- querying, based on the received alarm, the directed graph to obtain data of the directed graph related to the alarm;
- selecting one node of the plurality of nodes as a starting node, wherein the selected one node relates to the alarm;
- constructing a subgraph based on the obtained data of the directed graph and a relation of the obtained data to the selected one node, the subgraph comprising all the nodes that are forward-connected by at least one directed edge from the starting node;
- and
- outputting all nodes and the attribute of the nodes of the subgraph, wherein the attribute of each one of the nodes represents a status or process value of the corresponding element for analyzing which process parts need to be switched off or can be run in safe parameter ranges.
Dependencies are inferred from the claim text.