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1.发明授权公开(公告)号：US12111291B2
公开(公告)日：2024-10-08
申请号：US17435482
申请日：2020-01-16
Applicant: NEC Corporation
Inventor： Shohei Kinoshita , Shigeru Kasai , Yu Kiyokawa
CPC classification number: G01N29/12 , G01N2291/0289
Abstract: A structure diagnosis apparatus 1 for diagnosing a state of a structure in which there is a small change in the natural frequency includes: a natural vibration extraction unit 2 configured to acquire, from a plurality of sensors 21 that a structure is provided with 20, vibration information indicating vibration generated in the structure 20, and extracting natural vibration using the vibration information; a spectral shape extraction unit 3 configured to extract spectral shape information indicating a shape of a spectrum using the natural vibration; an index calculation unit 4 for calculating an index indicating a relationship between the spectral shape information and reference spectral shape information that is a preset reference; and a state estimation unit 5 for estimating the state of the structure based on the index.
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公开(公告)号：US12106770B2
公开(公告)日：2024-10-01
申请号：US17623316
申请日：2019-07-04
Applicant: NEC Corporation
Inventor： Sakiko Mishima , Yu Kiyokawa , Takahiro Toizumi , Kazutoshi Sagi
CPC classification number: G10L25/78 , G10L15/063
Abstract: Provided are a sound model generation device and the like that make it possible to more easily generate a sound model capable of distinguishing sound events using a plurality of features. A concatenating unit concatenates a plurality of features of sound signals that are learning data and generates a concatenated feature. A learning unit learns the generated concatenated feature for generating a sound model for distinguishing a sound event from a sound signal.
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Patent Agency Ranking
公开(公告)号：US20240028789A1
公开(公告)日：2024-01-25
申请号：US18025609
申请日：2020-09-18
Applicant: NEC Corporation
Inventor： Keiichi Kisamori , Yu Kiyokawa
IPC: G06F30/20
CPC classification number: G06F30/20
Abstract: A data calculation device including a high-level posterior distribution data calculator for calculating data indicating a posterior distribution of parameter values of a high-level model that simulates a subject, based on target data for outputs from the high-level model; and a low-level posterior distribution data calculator for calculating, for a low-level model that simulates a portion of the subject and that outputs parameter values of the high-level model, data indicating a posterior distribution of parameter values of the low-level model, based on the data indicating a posterior distribution of parameter values of the high-level model.
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4.发明授权公开(公告)号：US11609149B2
公开(公告)日：2023-03-21
申请号：US17425790
申请日：2019-01-28
Applicant: NEC Corporation
Inventor： Yu Kiyokawa , Shigeru Kasai , Shohei Kinoshita
Abstract: A state estimation apparatus 1 includes an acquisition unit 2 that acquires deterioration information indicating a deterioration state of each structural object and a learning unit 3 that learns common information that is common between pieces of the deterioration information and estimation index information that is used for estimating a deterioration state of a target structural object, using the deterioration information as input.
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公开(公告)号：US11579040B2
公开(公告)日：2023-02-14
申请号：US16769869
申请日：2018-12-03
Applicant: NEC Corporation
Inventor： Shohei Kinoshita , Shigeru Kasai , Yu Kiyokawa
Abstract: A damage diagnosis device is provided with: a detection unit for detecting that, immediately after a vehicle crossing a bridge has exited from the bridge, another vehicle is not crossing the bridge; a determination unit for determining whether the weight of the vehicle satisfies a criterion; and a diagnosis unit that, when the detection unit has detected that no other vehicle is crossing the bridge and the determination unit has determined that the weight of the vehicle satisfies the criterion, diagnoses damage to the bridge on the basis of information representing free vibration generated in the bridge due to the crossing of the vehicle, thereby improving the precision of diagnosis when damage to a bridge is diagnosed on the basis of information representing free vibration generated in the bridge due to the crossing of a vehicle.
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6.发明授权公开(公告)号：US12163823B2
公开(公告)日：2024-12-10
申请号：US17613128
申请日：2019-05-30
Applicant: NEC Corporation
Inventor： Yu Kiyokawa , Shigeru Kasai , Shohei Kinoshita
Abstract: A weight estimation apparatus 1 includes: an impulsive force calculation unit 2 calculating an impulsive force using an acceleration response indicating vibration generated in a structure by the moving object (vehicle 27) moving through the structure, and a weight estimation unit 3 estimating a weight of the moving object using the impulsive force.
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公开(公告)号：US11307175B2
公开(公告)日：2022-04-19
申请号：US15734782
申请日：2018-06-05
Applicant: NEC CORPORATION
Inventor： Yu Kiyokawa , Shigeru Kasai , Shohei Kinoshita
IPC: G01N29/12
Abstract: A diagnosis apparatus 1 including: a target vibration information generation unit 2 that generates pieces of target vibration information; a comparative relationship information generation unit 3 that generates pieces of comparative relationship information indicating relationships among the pieces of target vibration information, or the pieces of comparative relationship information indicating relationships among pieces of reference vibration information and the pieces of target vibration information, the pieces of reference vibration information indicating vibrations in the target mode among vibrations that are measured in a reference period; and a diagnosis unit 5 that diagnoses that a change has occurred in the structure 20 between the diagnosis period and the reference period based on a result of comparison between a distribution of pieces of reference relationship information and the distribution that has been calculated in relation to the pieces of comparative relationship information.
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