Failure factor priority order calculation device and method based on use environment
AssigneeHitachi, Ltd.
InventorYuuki Shimizu
Life of this patent
Estimating the term…
Abstract
Automatically generating a fault tree on the basis of the causal relationship of defects to events to be analyzed, and calculating a priority degree (score) for the individual events in the generated fault tree by means of the number of co-occurrences of “events” and “event-related information” in past defect information on the basis of “event-related information” in which a component is used. A scored fault tree to which the scores have been applied is presented.
Claims8
A failure factor priority order calculation device for analyzing a failure factor in a product, the failure factor priority order calculation device comprising:
- an input part that receives, for each component constituting the product, input of a plurality of events including the component and a phenomenon occurring in the component or including the component, and receives information related to an event in each of the components;
- a fault tree generation part that generates a fault tree indicating a hierarchical relationship between the plurality of events related to the product;
- and
- a score calculation part that calculates, for each event constituting the fault tree, a score indicating priority of a response to the event according to the information related to the event,
- wherein the input part further receives input of influence degree of each event on another event, and
- wherein the score calculation part calculates the score further using the influence degree.
A failure factor priority order calculation method using a failure factor priority order calculation device for analyzing a failure factor in a product, the failure factor priority order calculation method comprising:
- receiving, for each component constituting the product, input of a plurality of events including the component and a phenomenon occurring in the component or including the component, and receiving information related to an event in each of the components in an input part of the failure factor priority order calculation device;
- generating a fault tree indicating a hierarchical relationship between the plurality of events related to the product in a fault tree generation part of the failure factor priority order calculation device;
- and
- calculating, for each event constituting the fault tree, a score indicating priority of a response to the event according to the information related to the event in a score calculation part of the failure factor priority order calculation device,
- wherein the input part further receives input of influence degree of each event on another event, and
- wherein the score calculation part calculates the score further using the influence degree.
Dependencies are inferred from the claim text.