| 摘要 |
According to one embodiment, a system includes a first operation sound collector, a second operation sound collector, a database, a receiver, and controller. The first operation sound collector is provided in a movable part of equipment, and transmits first data including inclination angle data and first operation sound data. The second operation sound collector is provided in a fixed part of the equipment, and transmits second data including second operation sound data being collected simultaneously with the first operation sound data. The database stores operation sound data in normal operation. The receiver simultaneously receives the first data and the second data. The controller determines whether an operation sound is abnormal based on the first data, the second data, and the operation sound data of the database.
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