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公开(公告)号：US20210172828A1
公开(公告)日：2021-06-10
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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公开(公告)号：US20200278241A1
公开(公告)日：2020-09-03
申请号：US16648092
申请日：2017-09-21
Applicant: NEC CORPORATION
Inventor： Yu KIYOKAWA , Shigeru KASAI , Shohei KINOSHITA
IPC: G01H17/00
Abstract: A vibration determination device according to an exemplary aspect of the present invention includes: at least one memory storing a set of instructions; and at least one processor configured to execute the set of instructions to: determine, based on a plurality of feature values representing features of a vibration of a structure, whether the vibration of the structure is a standard vibration; and detect, when it is not determined that the vibration of the structure is the standard vibration, an outlier included in the plurality of feature values; determine, based on the plurality of feature values other than the detected outlier, whether the vibration of the structure is the standard vibration; and output whether the vibration of the structure is the standard vibration.
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Patent Agency Ranking
13.发明申请公开(公告)号：US20220163422A1
公开(公告)日：2022-05-26
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：US20210341352A1
公开(公告)日：2021-11-04
申请号：US17271258
申请日：2018-08-31
Applicant: NEC Corporation
Inventor： Shohei KINOSHITA , Shigeru KASAI , Yu KIYOKAWA
Abstract: A diagnosis apparatus 1 includes: a generation unit 2 configured to acquire vibration information indicating vibration produced in a structure 20 from a plurality of sensors 21 provided to the structure 20, and to generate, using the vibration information, natural vibration mode information indicating a natural vibration mode shape; an occurrence rate calculation unit 3 configured to calculate a rate of occurrence of a normal natural vibration mode shape based on the number of times vibration was applied to the structure 20 and the number of times the normal natural vibration mode shape was generated when the vibration was applied; and a diagnosis unit 4 configured to diagnose whether or not repair and reinforcement performed on the structure were effective based on the rate of occurrence and a reference value.
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15.发明申请公开(公告)号：US20210010897A1
公开(公告)日：2021-01-14
申请号：US16981529
申请日：2018-03-23
Applicant: NEC Corporation
Inventor： Yu KIYOKAWA , Shigeru KASAI , Shohei KINOSHITA
IPC: G01M7/02
Abstract: An abnormality diagnosis apparatus including: a feature amount calculation unit 2 configured to perform, on mode vectors generated based on vibration of a structure 20 measured by sensors 21, normalization of amplitude components and normalization for removing an initial phase from phase components, and calculate amplitude feature amounts corresponding to the amplitude components and phase feature amounts corresponding to the phase components; and an abnormality detection unit 3 configured to specify an abnormality in the structure 20 based on the amplitude feature amounts and the phase feature amounts.
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公开(公告)号：US20190301968A1
公开(公告)日：2019-10-03
申请号：US16341488
申请日：2017-10-20
Applicant: NEC Corporation
Inventor： Shohei KINOSHITA , Shigeru KASAI
Abstract: An assessing device capable of assessing presence or absence of local damage in a structure is provided. The assessing device includes a dominant frequency identifying unit that identifies a dominant frequency of a vibration at each of a plurality of spots in a structure, based on information indicating the vibration at each of the plurality of spots, a phase difference identifying unit that identifies a phase difference at the dominant frequency between the vibrations at the plurality of spots, based on the dominant frequency and information indicating the vibrations; and an assessing unit that assesses damage in the structure, based on the phase difference.
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公开(公告)号：US20160040460A1
公开(公告)日：2016-02-11
申请号：US14781754
申请日：2014-04-04
Applicant: NEC Corporation
Inventor： Shigeru KASAI , Soichiro TAKATA
CPC classification number: E05C19/16 , E05B45/06 , E05B45/12 , E05B47/0001 , E05B2045/063 , E05B2045/065 , E05B2047/0068 , E05B2047/0069 , E05B2047/0072 , E05C19/02
Abstract: A locking/unlocking detection device (10A) includes: a permanent magnet (12) that is attached to an opening/closing part (100) locked and unlocked by a locking mechanism (110); a vibration detection unit (11) that is attached to a base part (101) openably and closably supporting the opening/closing part (100); a magnetism detection unit (13) that is attached to the base part (101); a casing (15) that covers the vibration detection unit (11) and the magnetism detection unit (13); and a locking/unlocking detection unit (14). The vibration detection unit (11) detects vibration of the base part (101). The magnetism detection unit (13) detects magnetism of the permanent magnet (12). The locking/unlocking detection unit (14) detects locking/unlocking of the opening/closing part (100) from the vibration detected by the vibration detection unit (11) and the magnetism detected by the magnetism detection unit (13).
Abstract translation: 锁定/解锁检测装置（10A）包括：永磁体（12），其安装在通过锁定机构（110）锁定和解锁的开闭部分（100）上; 振动检测单元，其安装在可开闭地支撑所述开闭部的基部上; 磁性检测单元（13），其附接到所述基部（101）; 覆盖所述振动检测单元（11）和所述磁检测单元（13）的壳体（15）。 和锁定/解锁检测单元（14）。 振动检测单元（11）检测基部（101）的振动。 磁检测单元（13）检测永磁体（12）的磁性。 锁定/解锁检测单元（14）检测由振动检测单元（11）检测到的振动和由磁性检测单元（13）检测到的磁力来锁定/解锁开闭部件（100）。
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