公开(公告)号：US20180011480A1

公开(公告)日：2018-01-11

申请号：US15544298

申请日：2015-01-20

Applicant: HITACHI, LTD.

Inventor： Tomoaki HIRUTA ,  Kohji MAKI ,  Tetsuji KATO ,  Yoshitaka ATARASHI

IPC: G05B23/02 ,  G01R31/34

CPC classification number: G05B23/0208 ,  G01R31/343 ,  G05B23/0227

Abstract: An operation mode specifying unit specifies an operation mode of a machine by comparing time-series data of an amplitude and a frequency of measurement data obtained from a sensor with definition data of the operation mode of the machine created in advance by an operation mode data creation unit. In addition, an abnormality diagnosis unit performs processing of cluster analysis for the measurement data obtained from the sensor or the like, and diagnoses abnormality of the machine according to diagnosis procedure information that is set in advance depending on the set operation mode and an abnormality mode of the machine.

公开(公告)号：US20180059656A1

公开(公告)日：2018-03-01

申请号：US15557242

申请日：2015-03-12

Applicant: Hitachi, Ltd.

Inventor： Tomoaki HIRUTA ,  Kohji MAKI ,  Tetsuji KATO ,  Yoshitaka ATARASHI

IPC: G05B23/02 ,  G06F15/18

CPC classification number: G05B23/0243 ,  G01M13/00 ,  G01M13/045 ,  G01M15/14 ,  G01M99/005 ,  G01R31/00 ,  G01R31/343 ,  G05B23/0267 ,  G05B23/0283 ,  G06N20/00

Abstract: The purpose of the present invention is to provide a machine diagnostic device that assists with sensor attachment such that malfunction sensing performance may be maintained even after maintenance of a device. The machine diagnostic device includes a sensor data acquisition part that acquires time-series sensor data that are measured by sensors that are attached to a machine that has one or more operating modes; a learning unit that statistically processes the sensor data prior to detachment of the sensors and computes a normal operation model; a malfunction diagnostic unit that diagnoses a malfunction of the machine on the basis of the sensor data and the normal operation model; and a sensor adjustment unit that, when the sensors are re-attached to the machine after the sensors have been detached therefrom, displays, in a display unit, as a sensor adjustment mode, discrepancies between the normal operation model prior to the detachment of the sensors and the post sensor attachment sensor data.

公开(公告)号：US20170285654A1

公开(公告)日：2017-10-05

申请号：US15450066

申请日：2017-03-06

Applicant: HITACHI, LTD.

Inventor： Toru NAGAI ,  Atsushi KATOU ,  Yoshitaka ATARASHI ,  Mariko OKUDE

IPC: G05D1/02 ,  G08G1/14 ,  B60W30/06 ,  G06Q10/10 ,  B62D15/02

CPC classification number: G05D1/0274 ,  B60W30/06 ,  B62D15/0285 ,  G05D1/0212 ,  G06Q10/02 ,  G06Q10/043 ,  G06Q10/1097 ,  G08G1/141 ,  G08G1/143 ,  G08G1/144 ,  G08G1/146

Abstract: An auto valet parking system operates a car in a parking lot and including: a parking lot map database which manages route information to each parking space; a vacant space information database which manages full and vacant information for each parking space; a facility migration information database which accumulates facility migration information indicative of behaviors of a parking lot user; a first unit which detects the full and vacant information for each parking space, searches for a route to the parking space and automatically parks the car in the parking space based on the route information; a second unit notifies the parking lot user of information on a parking position through a mobile terminal; and a third unit which searches for the vacant space as close as possible to conditions based on the facility migration information, and reflects the vacant space on the first unit.