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1.发明申请公开(公告)号：US20180045687A1
公开(公告)日：2018-02-15
申请号：US15557535
申请日：2016-03-22
Applicant: NEC Corporation
Inventor： Shin TOMINAGA , Masatake TAKAHASHI , Kanta MIYAKE
CPC classification number: G01N29/348 , E03B7/071 , F17D5/06 , G01M3/02 , G01M3/243 , G01N29/043 , G01N29/12 , G01N29/14 , G01N29/42 , G01N2291/262
Abstract: To highly accurately determine whether there is a defect in a pipe.A defect analysis device includes frequency determining means for determining a first frequency band based on a first vibration occurred at a first point located within a predetermined range from a deployment position of vibration detection means capable of detecting a vibration occurred at a pipe, determining a second frequency band based on a second vibration occurred at a second point located which is different from the first point, and determining a leakage frequency band based on the first frequency band and the second frequency band, and signal processing means for determining a defect between the first point and the second point based on a vibration level of the vibration in the leakage frequency band.
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公开(公告)号：US20160282219A1
公开(公告)日：2016-09-29
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: G01M3/24
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.
Abstract translation: 本发明的泄漏判定系统包括：第一检测装置，用于检测指示管道中流体状态的规定物理量;第二检测装置，用于检测通过管道传播的振动;以及泄漏确定装置，用于执行泄漏确定， 关于由第一检测装置检测到的物理量和由第二检测装置检测到的振动。
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公开(公告)号：US20240385032A1
公开(公告)日：2024-11-21
申请号：US18690792
申请日：2021-09-28
Applicant: NEC Corporation
Inventor： Masatake TAKAHASHI , Yuma MATSUDA , Hitoshi Sakurai
Abstract: A system includes: a plurality of optical fibers provided corresponding to a plurality of lanes, respectively, along a road having the plurality of lanes; a sensing unit configured to receive, for each of the plurality of lanes, an optical signal from the optical fiber provided corresponding to the lane, and detect vibration generated by a vehicle traveling in the lane based on the optical signal; a vibration data calculation unit configured to calculate, for each of the plurality of lanes, vibration data indicating the vibration detected in the lane based on the optical signal received from the optical fiber provided corresponding to the lane; and a traveling state detection unit configured to detect, for each of the plurality of lanes, a traveling state of the vehicle traveling in the lane based on the vibration data calculated for the lane.
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公开(公告)号：US20200370285A1
公开(公告)日：2020-11-26
申请号：US16636982
申请日：2018-08-02
Applicant: NEC CORPORATION
Inventor： Masatake TAKAHASHI , Manabu KUSUMOTO , Jun SAKAI
IPC: E03B7/07
Abstract: A state analysis device is capable of determining a state of the interior of piping with high precision, and includes: an index calculation means for deriving an index indicating the state of the piping, based on a flow speed of fluid flowing out of the piping, and a fluid pressure of the interior of the piping at two or more locations of the piping; and a determination means for determining the state of the piping, based on the index.
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公开(公告)号：US20180292292A1
公开(公告)日：2018-10-11
申请号：US15767389
申请日：2016-11-01
Applicant: NEC Corporation
Inventor： Masatake TAKAHASHI , Shin TOMINAGA , Jun SAKAI , Hirofumi INOUE
Abstract: There are circumstances in which estimation of a pipe condition is desired as needs of water utility companies, and thus, an object of the present invention is to provide a technique that can estimate conditions of deterioration or a defect inside and outside a pipe.In order to solve the problem, a pipe condition detection system according to the present invention includes: a sensor unit that detects vibration data and pressure data from a pipe or fluid in the pipe; and a determination unit that determines conditions inside and outside the pipe, based on the vibration data and the pressure data acquired by the sensor unit.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20170205376A1
公开(公告)日：2017-07-20
申请号：US15329124
申请日：2015-07-29
Applicant: NEC Corporation
Inventor： Shin TOMINAGA , Masatake TAKAHASHI , Junichiro MATAGA , Hirofumi INOUE
Abstract: This invention provides the following: a diagnostic device that may, with a simple design, diagnose the condition of a wide area of a structure such as a pipe; and the like. The diagnostic device 100 has a determining means for determining the condition of the structure on the basis of the speed of sound therein.
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公开(公告)号：US20200347994A1
公开(公告)日：2020-11-05
申请号：US16964379
申请日：2019-02-14
Applicant: NEC Corporation
Inventor： Masatake TAKAHASHI , Shin TOMINAGA
Abstract: A facility state analyzing device includes: a measurement unit that measures a load on a facility and generates, based on a measurement condition, load information representing the load being measured; an extraction unit that extracts, from the load information generated by the measurement unit, dynamic load information representing a dynamic component of the load whose dynamic fluctuation degree with a lapse of time is equal to or more than a reference; a measurement condition determination unit that determines, based on temporal transition of the dynamic load information, the measurement condition indicating a time zone during which the load information is generated; and an analysis unit that analyzes the load applied on the facility, by using the load information generated based on the measurement condition, to efficiently increase accuracy in estimating the state of the facility on the basis of a situation of the load applied to the facility.
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公开(公告)号：US20190137044A1
公开(公告)日：2019-05-09
申请号：US16096396
申请日：2017-04-19
Applicant: NEC Corporation
Inventor： Masatake TAKAHASHI , Hirofumi INOUE , Shin TOMINAGA
Abstract: A leakage position analyzing system includes: a first wave motion detector installed in a first pipe; a second wave motion detector installed in a second pipe connected to the first pipe; a wave motion applying device applying a wave motion to the first pipe; and a leakage position calculator calculating a fluid leakage position on the basis of the difference between the time at which the wave motion reaches the first wave motion detector and the time at which the wave motion reaches the second wave motion detector, a length La from the location in which the first wave motion detector is installed to the location of the connection with the second pipe, and a length Lb from the location in which the second wave motion detector is installed to the location of the connection with the first pipe.
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公开(公告)号：US20180136173A1
公开(公告)日：2018-05-17
申请号：US15573217
申请日：2016-05-20
Applicant: NEC CORPORATION
Inventor： Masatake TAKAHASHI , Shin TOMINAGA , Kanta MIYAKE
CPC classification number: G01N29/42 , G01N29/04 , G01N29/043 , G01N29/07 , G01N29/46 , G01N2291/011 , G01N2291/0258 , G01N2291/262 , G01N2291/2634
Abstract: [Problem] To assess condition of a pipe with a high degree of accuracy.[Solution] A condition assessment device 100 includes a detection unit 110 that detects a plurality of waves propagating through a pipe or fluid in the pipe and each having a different propagation distance at the pipe or a connection portion of the pipe, a determination unit 120 that determines a predetermined frequency band based on a difference between the plurality of the waves detected by the detection means; and an assessment unit 130 that assesses condition of the pipe using a physical quantity related to the frequency band determined by the determination means as an index.
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公开(公告)号：US20160216203A1
公开(公告)日：2016-07-28
申请号：US14917725
申请日：2014-06-26
Applicant: NEC CORPORATION
Inventor： Shin TOMINAGA , Yasuhiro SASAKI , Masatake TAKAHASHI , Junichiro MATAGA
CPC classification number: G01N21/41 , G01J3/1838 , G01J3/36 , G01J5/02 , G01J2003/2813 , G01N2201/068 , G02B3/0056 , G02B3/0087 , G02B5/32 , H01L31/0232 , H04N9/045 , H04N2209/042
Abstract: A sensor unit (100) provided with a substrate (101), a plurality of light-receiving units (102) that are provided on the substrate (101) and detect light, and a diffraction grating layer (103) that is provided on the substrate (101) and the light-receiving units (102) and has at least two diffraction means for diffracting light of corresponding wavelengths and condensing the light onto the light-receiving units, wherein at least two of the diffraction means are composed from holograms formed on a first diffraction grating layer and at least a portion of the plurality of holograms formed on the first diffraction grating layer overlap at least partially with another adjacent hologram.
Abstract translation: 设置有基板（101）的传感器单元（100），设置在基板（101）上并检测光的多个光接收单元（102），以及设置在基板 基板（101）和光接收单元（102），并且具有至少两个衍射装置，用于衍射相应波长的光并将光聚集到光接收单元上，其中至少两个衍射装置由形成的全息图 在第一衍射光栅层上形成的多个全息图的至少一部分至少部分地与另一个相邻的全息图重叠。
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