公开(公告)号：US20190204818A1

公开(公告)日：2019-07-04

申请号：US16332275

申请日：2016-11-30

Applicant: HITACHI, LTD.

Inventor： Yuji OGATA ,  Daisuke ISHII

IPC: G05B23/02

CPC classification number: G05B23/0221 ,  G05B23/02 ,  G05B23/0243 ,  G05B23/0262 ,  G05B23/0267

Abstract: A data collection system pertaining to one embodiment of the present invention collects time-series data which is output from sensors installed on equipment which is a monitored object and carries out detecting an abnormality of the equipment. The data collection system stores plural fault models as data for comparison with time-series data and, in a learning process, determines a range to examine within time-series data by comparing the time-series data with each one of the fault models. An abnormality detection process includes extracting a partial frequency spectrum to examine from the frequency spectrum of time-series data, using information on the range to examine within the time-series data determined through the learning process, and carrying out detecting an abnormality of the equipment using the extracted frequency spectrum.

公开(公告)号：US20160261481A1

公开(公告)日：2016-09-08

申请号：US15006254

申请日：2016-01-26

Applicant: HITACHI, LTD.

Inventor： Yuji OGATA ,  Kazumasa TOKUHASHI ,  Yuji TSUSHIMA

IPC: H04L12/26 ,  H04L29/08

CPC classification number: H04L43/10 ,  G05B23/0264 ,  H04L67/12 ,  H04W4/70

Abstract: In a data collection system in which a server and a gateway are connected to each other and which includes a plurality of sensors installed on a subject of monitoring and outputting sensor data, the server selects a collection rule to change the granularity of the sensor data when it is detected on the basis of the sensor data that an abnormality or a sign of abnormality has occurred in the subject of monitoring, and the server transmits the collection rule to the gateway. The gateway acquires and manages states of the sensors, selects a first condition according to the collection rule received from the server, changes a setting for acquiring the sensor data on the basis of the first condition and the states of the sensors, acquires sensor data from the sensors on the basis of the setting, and transmits the sensor data to the server.

Abstract translation: 在其中服务器和网关彼此连接并且包括安装在监视和输出传感器数据的对象上的多个传感器的数据收集系统中，服务器选择收集规则以改变传感器数据的粒度，当 基于传感器数据检测出在监视对象中出现异常或异常的征兆，服务器向网关发送收集规则。 网关获取和管理传感器的状态，根据从服务器接收的收集规则选择第一条件，根据第一条件和传感器的状态改变用于获取传感器数据的设置，从 基于该设置的传感器，并将传感器数据发送到服务器。