Back to results
US 2018/0285183 A1Published application
Abnormality Detection Device
AssigneeHitachi, Ltd.
InventorShinji NAKAGAWA
Life of this patent
Estimating the term…
Abstract
An object of the invention is to provide an abnormality detection device that can detect a processing abnormality of various types of software. The abnormality detection device according to the invention divides an output data series which is output by software into one or more clusters, determines that the output data included in any cluster is normal, and determines that the output data not included in any cluster is abnormal.
Claims15
An abnormality detection device that detects an abnormality of an operation result which is acquired by causing a processor to execute software, the abnormality detection device comprising:
- a divider that acquires a plurality of operation results from a storage device that stores the plurality of operation results and divides the acquired operation results into one or more groups;
- a range setter that sets a normal range of the operation result for each group using a range of data values included in the operation results included in each group;
- and
- an abnormality determiner that acquires a new operation result from the storage device and determines whether the new operation result is normal on the basis of the normal range after the range setter has set the normal range.
1 more element
Dependencies are inferred from the claim text.