公开(公告)号：US20200081043A1

公开(公告)日：2020-03-12

申请号：US16681427

申请日：2019-11-12

Applicant: NEC Corporation

Inventor： Eisuke SANEYOSHI ,  Takahiro TOIZUMI ,  Kosuke HOMMA ,  Ryo HASHIMOTO ,  Katsuya SUZUKI

IPC: G01R21/133 ,  G01R19/25

Abstract: A monitoring device (10) includes a feature amount storage unit (11) that stores a device feature amount which is a feature amount of each of a plurality of electrical devices installed in a predetermined unit in operation; a measured data acquisition unit (12) that acquires measured data of the predetermined unit which is at least one of a total current consumption, a total power consumption, and a voltage measured in the predetermined unit; a feature amount extraction unit (13) that acquires a measurement feature amount which is the feature amount included in the measured data of the predetermined unit; a correction unit (15) that corrects a first feature amount which is the device feature amount or the measurement feature amount based on unit feature information indicating a feature of the predetermined unit; and a presumption unit (16) that presumes the electrical device being in operation using the corrected first feature amount, and a second feature amount which is the device feature amount or the measurement feature amount, and a different feature amount from the first feature amount.

公开(公告)号：US20170199265A1

公开(公告)日：2017-07-13

申请号：US15314766

申请日：2015-03-13

Applicant: NEC Corporation

Inventor： Takahiro TOIZUMI ,  Eisuke SANEYOSHI ,  Katsuya SUZUKI ,  Kosuke HOMMA ,  Ryo HASHIMOTO ,  Koji KUDO

IPC: G01R35/00 ,  G06N99/00 ,  G01R21/133

CPC classification number: G01R35/005 ,  G01D4/004 ,  G01R21/133 ,  G01R22/063 ,  G06N99/005 ,  G06Q10/00 ,  G06Q50/06 ,  Y02B70/3266 ,  Y02B90/242 ,  Y04S20/242 ,  Y04S20/322 ,  Y04S20/38

Abstract: A monitoring system including a plurality of monitoring devices (20) and a server (10) is provided. When new device data including a feature amount of a new electrical device different form existing electrical devices is extracted from measurement data (current consumption or the like), the monitoring device (20) calibrates the feature amount of the new electrical device using calibration data generated based on calibration data of the exiting electrical device, and transmits the new device data to the server (10) in association with identification information of the new electrical device. When the calibrated new device data of the new electrical device is received from the plurality of monitoring devices (20), the server (10) generates and registers training data of the new electrical device based on the plurality of pieces of calibrated new device data.

公开(公告)号：US20170176502A1

公开(公告)日：2017-06-22

申请号：US15300496

申请日：2015-01-23

Applicant: NEC Corporation

Inventor： Eisuke SANEYOSHI ,  Ryo HASHIMOTO ,  Kosuke HOMMA ,  Koji KUDO ,  Takahiro TOIZUMI

IPC: G01R21/133 ,  G01R21/06

CPC classification number: G01R21/133 ,  G01R21/06

Abstract: A monitoring device (10) includes: a unit-specific waveform data acquisition unit (12) that acquires unit-specific monitoring waveform data which is waveform data of at least one among total current consumption, a total input voltage, and total power consumption in a unit in which monitoring target electrical devices are installed; a first inference unit (13) that infers operation states of at least some of the monitoring target electrical devices based on a 1st feature amount group including at least one kind of feature amount extracted from the unit-specific monitoring waveform data, and a training feature amount which is a feature amount of each of the monitoring target electrical devices in a predetermined operation state; and a second inference unit (14) that infers the operation states of some of the monitoring target electrical devices based on a 2nd feature amount group including at least one kind of feature amount extracted from the unit-specific monitoring waveform data, and different from the 1st feature amount group and the training feature amount.