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US 11,899,439 B2Granted
Method and device for calculating degree of abnormality
AssigneeSeiko Epson Corporation
InventorShinji Magara
Life of this patent
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Abstract
A method includes acquiring data indicating a plurality of sensor detection values arranged in order along a specific variable axis, detecting, in the data, a plurality of change points that are data points at which the sensor detection value on the specific variable axis changes by a predetermined value or more, and calculating, for a target change point that is one change point among the plurality of change points, an index value representing a degree of abnormality using the target change point and a reference change point that is another change point.
Claims8
A method, comprising:
- acquiring data indicating a plurality of sensor detection values arranged in order along a specific variable axis;
- storing the data indicating the plurality of sensor detection values in a memory;
- detecting, in the stored data, a plurality of change points that are data points at which respective sensor detection values of the plurality of sensor detection values on the specific variable axis changes by at least a predetermined value;
- calculating, for a target change point that is one change point among the plurality of change points, an index value representing a degree of abnormality using the target change point and a reference change point that is another change point among the plurality of change points, wherein
- the calculation of the index value includes calculating an absolute value of a difference between a target detection value that is a sensor detection value of the plurality of sensor detection values at the target change point and a reference detection value that is the sensor detection value at the reference change point;
- and
- controlling display of the index value and a time point on the specific variable axis at which the abnormality has occurred.
4 more elements
A device, comprising:
- an acquisition unit configured to acquire data indicating a plurality of sensor detection values arranged in order along a specific variable axis;
- a memory configured to store the data indicating the plurality of sensor detection values;
- a detection unit configured to detect a plurality of change points that are data points at which respective sensor detection values of the plurality of sensor detection values on the specific variable axis changes by at least a predetermined value in the stored data;
- a calculation unit configured to calculate, for a target change point that is one change point among the plurality of change points, an index value representing a degree of abnormality of the target change point using the target change point and a reference change point that is another change point among the plurality of change points, wherein
- the calculation of the index value includes calculation of an absolute value of a difference between a target detection value that is a sensor detection value of the plurality of sensor detection values at the target change point and a reference detection value that is the sensor detection value at the reference change point;
- and
- an output unit configured to control display of the index value and a time point on the specific variable axis at which the abnormality has occurred.
4 more elements
A non-transitory computer-readable storage medium having stored thereon computer-executable instructions, that when executed by a processor, cause the processor to execute operations, the operations comprising:
- acquiring data indicating a plurality of sensor detection values arranged in order along a specific variable axis;
- storing the data indicating the plurality of sensor detection values in a memory;
- detecting a plurality of change points that are data points at which respective sensor detection values of the plurality of sensor detection values on the specific variable axis changes by at least a predetermined value in the stored data;
- calculating, for a target change point that is one change point among the plurality of change points, an index value representing a degree of abnormality of the target change point using the target change point and a reference change point that is another change point among the plurality of change points, wherein
- the calculation of the index value includes calculating an absolute value of a difference between a target detection value that is a sensor detection value of the plurality of sensor detection values at the target change point and a reference detection value that is the sensor detection value at the reference change point;
- and
- controlling display of the index value and a time point on the specific variable axis at which the abnormality has occurred.
4 more elements
Dependencies are inferred from the claim text.