Patent ID: 11972554
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  E | IPC G

Claim 7:
8. A detection method, comprising:
acquiring a video of each of a plurality of bearings of a structure including the plurality of bearings, during a period in which a load applied to the structure is changing;
extracting, for each of the plurality of bearings, (i) k displacements corresponding to k degrees of freedom of the bearing based on the video, and (ii) a dynamic feature of the bearing based on the k displacements, where k is an integer greater than or equal to two; and
identifying, in the period and among the plurality of bearings, a bearing whose dynamic feature fails to match a dynamic feature of one or more other bearings of the plurality of bearings.