公开(公告)号：US20170343514A1

公开(公告)日：2017-11-30

申请号：US15537943

申请日：2016-01-13

Applicant: NEC Corporation

Inventor： Soichiro Takata ,  Shohei Kinoshita ,  Hirofumi Inoue ,  Shigeki Shinoda ,  Kenichiro Fujiyama ,  Takahiro Kumura ,  Shigeru Kasai ,  Nobuhiro Mikami

IPC: G01N29/04 ,  G01H13/00

CPC classification number: G01N29/045 ,  G01H13/00 ,  G01N29/048 ,  G01N29/07 ,  G01N2291/011 ,  G01N2291/0258 ,  G01N2291/0421 ,  G01N2291/0426 ,  G01N2291/0428 ,  G01N2291/2634

Abstract: Degradation of a pipe can be easily detected. A piping inspection system 1 includes an excitation unit 100, a wave detection unit 210, and a diagnosis unit 220. The excitation unit 100 excites waves of different wave modes simultaneously at a first position of a pipe 300. The wave detection unit 210 detects the waves of different wave modes at a second position of the pipe 300. The diagnosis unit 220 diagnoses degradation of the pipe 300 based on a velocity of one of the waves of different wave modes, the velocity being calculated by using a detection time difference between the waves of different wave modes.

公开(公告)号：US11263573B2

公开(公告)日：2022-03-01

申请号：US16497858

申请日：2017-03-31

Applicant: NEC Corporation

Inventor： Yasuhiro Sogawa ,  Nobuhiro Mikami

IPC: G06Q10/06 ,  G06F30/20 ,  E01D22/00 ,  G06N7/00 ,  G06Q10/00 ,  G06Q50/08

Abstract: In order to supplement results of diagnosis of degradation of an object that has been implemented at set intervals using a degradation progression model for simulating the progression of degradation of the object, a degradation prediction apparatus 100 is provided with: a data generation unit 112 configured to generate, as supplement data, diagnosis results that would be obtained if the degradation diagnosis were performed at an interval shorter than the set interval; a prediction model generation unit 113 configured, using the supplement data, to generate a prediction model for predicting a degradation index indicating a degradation state of the object at a specific point in time; and a degradation index prediction unit 114 configured to predict the degradation index of the object based on the prediction model.

公开(公告)号：US10036684B2

公开(公告)日：2018-07-31

申请号：US15034027

申请日：2014-11-10

Applicant: NEC CORPORATION

Inventor： Shohei Kinoshita ,  Yasuhiro Sasaki ,  Nobuhiro Mikami ,  Masatake Takahashi ,  Shin Tominaga ,  Shigeki Shinoda ,  Soichiro Takata

IPC: G01M3/00 ,  G01M3/24 ,  G01M3/26 ,  G01M3/28

CPC classification number: G01M3/243 ,  G01M3/00 ,  G01M3/002 ,  G01M3/24 ,  G01M3/26 ,  G01M3/2815

Abstract: In a related fluid leakage detecting device, erroneous leakage determination may occur due to a change in a state of a fluid in piping.A leakage determination system of the present invention includes a first detection means for detecting a prescribed physical quantity indicating a state of a fluid in piping, a second detection means for detecting vibration propagating through the piping, and a leakage determination means for performing leakage determination based on the physical quantity detected by the first detection means and the vibration detected by the second detection means.