公开(公告)号：US20230161334A1

公开(公告)日：2023-05-25

申请号：US17921408

申请日：2020-06-15

Applicant: Hitachi, Ltd.

Inventor： Reiso SASAKI ,  Kazuo ONO

IPC: G05B19/418 ,  G01K1/024 ,  H04W52/02

CPC classification number: G05B19/41865 ,  G01K1/024 ,  H04W52/0251 ,  G05B2219/50185

Abstract: An automatic inspection system includes a wireless slave device and a wireless master device. The wireless slave device includes a sound collection unit that collects sound generated from an inspection target object, an analysis unit that analyzes the collected sound to obtain a degree of difference between the collected sound and normal sound learned in advance and sound state information of the collected sound, as an analysis result, a wireless communication unit that wirelessly transmits data including the analysis results to a wireless master device, and a power supply unit that supplies power to the sound collection unit, the analysis unit, and the wireless communication unit. The wireless master device is configured to perform processing of receiving and managing the data from the wireless slave device, and transmitting the analysis result extracted from the data to a monitoring terminal that monitors a state of the inspection target object.

公开(公告)号：US20210241784A1

公开(公告)日：2021-08-05

申请号：US16972763

申请日：2019-03-01

Applicant: Hitachi, Ltd.

Inventor： Reiso SASAKI ,  Takuma NISHIMURA ,  Takahiro YAMADA ,  Tsukasa FUJIMORI

IPC: G10L25/51 ,  H04R3/00 ,  H04R1/08 ,  G10L25/72 ,  G08B3/10 ,  G01H17/00 ,  G01M99/00 ,  G05B23/02

Abstract: A sound inspection system that can reduce power consumption is provided. A sound inspection system 1 that determines a state based on a sound of an inspection target object 2 includes a sound sensor device 10 that collects the sound of the inspection target object 2, analyzes the collected sound, and transmits an analysis result, and a sound data determination device 30 that determines a state of the inspection target object based on the analysis result from the sound sensor device. The sound sensor device transmits, as the analysis result, intensities of the collected sound for each predetermined frequency set in advance.