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    Vehicle detection apparatus, method and program
    1.
    发明授权
    Vehicle detection apparatus, method and program 有权

    公开(公告)号：US12236777B2

    公开(公告)日：2025-02-25

    申请号：US17908597

    申请日：2020-03-12

    Applicant: NEC Corporation

    Inventor： Murtuza Petladwala ,  Shohei Kinoshita ,  Shigeru Kasai

    IPC: G08G1/01 ,  G01V1/00 ,  G01V1/30 ,  G01V1/32 ,  G01V1/36

    Abstract: An apparatus includes a signal acquisition part acquires oscillation signals from sensors provided under lanes of a bridge and close to an expansion joint, a signal separation part applies BSS to the oscillation signals to estimate source oscillation signals respectively separated in the plurality of lanes, and adjusts amplitude of the source oscillation signals to output amplitude adjusted oscillation signals, and a vehicle estimation part estimates, from the amplitude adjusted oscillation signal, a response oscillation due to a vehicle passing on the lane of interest to detect and count vehicles passing on the lane.

    ABNORMALITY ESTIMATION APPARATUS, ABNORMALITY ESTIMATION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM
    2.
    发明申请
    ABNORMALITY ESTIMATION APPARATUS, ABNORMALITY ESTIMATION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM 有权

    公开(公告)号：US20230054215A1

    公开(公告)日：2023-02-23

    申请号：US17797288

    申请日：2020-02-19

    Applicant: NEC Corporation

    Inventor： Sakiko Mishima ,  Shigeru Kasai ,  Shohei Kinoshita

    IPC: G01M5/00

    Abstract: An abnormality estimation apparatus 10 includes: a detection unit 11 configured to detect a vibration response when a vehicle passes over an expansion and contraction apparatus 23, using vibration information indicating vibration that occurs in a bridge; a first index calculation unit 12 configured to calculate a first index for determining the presence or absence of an abnormality in the expansion and contraction apparatus 23, using the vibration response; and an estimation unit 13 configured to estimate the presence or absence of an abnormality in accordance with a change in the first index.

    Leak detection system, vibration detection device, information processing device, and leak detection method
    3.
    发明授权
    Leak detection system, vibration detection device, information processing device, and leak detection method 有权

    公开(公告)号：US09772251B2

    公开(公告)日：2017-09-26

    申请号：US14780126

    申请日：2014-03-20

    Applicant: NEC Corporation

    Inventor： Shigeki Shinoda ,  Yasuhiro Sasaki ,  Masatake Takahashi ,  Shohei Kinoshita ,  Hiromi Yamamoto

    IPC: G01M3/24 ,  H04Q9/00

    CPC classification number: G01M3/243 ,  G01M3/24 ,  H04Q9/00

    Abstract: A vibration detection device (10) is provided with a vibration detection unit (110), a sensor-side leak determination unit (120), a first transmission unit (130), and a second transmission unit (140). The vibration detection unit (110) detects vibration transmitted through piping (30). The sensor-side leak determination unit (120) determines whether or not there is a possibility of a leak in the piping (30) based on a measurement result of the vibration detection unit (110). When the sensor-side leak determination unit (120) determines that there is a possibility of a leak, the first transmission unit (130) transmits provisional leak information to an information processing device (20). The provisional leak information indicates that there is a possibility of a leak in the piping (30). When waveform request information indicating a request for waveform data of the vibration is received from the information processing device (20), the second transmission unit (140) transmits waveform data measured by the vibration detection unit (110) to the information processing device (20).

    Diagnosis apparatus, diagnosis method, and computer-readable recording medium
    5.
    发明授权
    Diagnosis apparatus, diagnosis method, and computer-readable recording medium 有权

    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.

    Damage diagnosis device, damage diagnosis method, and recording medium in which damage diagnosis program is stored
    8.
    发明授权
    Damage diagnosis device, damage diagnosis method, and recording medium in which damage diagnosis program is stored 有权

    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

    IPC: G01M7/02 ,  G01G19/02 ,  G01J5/00 ,  G01P15/00

    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.

    Leak-Detection Device, Program, and Control Method
    9.
    发明申请
    Leak-Detection Device, Program, and Control Method 有权
    泄漏检测装置，程序和控制方法

    公开(公告)号：US20150211953A1

    公开(公告)日：2015-07-30

    申请号：US14430390

    申请日：2013-09-06

    Applicant: NEC CORPORATION

    Inventor： Shigeki Shinoda ,  Tetsuya Yoshinari ,  Shohei Kinoshita ,  Hiromi Yamamoto ,  Masatake Takahashi ,  Yasuhiro Sasaki

    IPC: G01M3/16

    CPC classification number: G01M3/16 ,  G01M3/243

    Abstract: A signal acquisition unit (2020) acquires a signal. From the signal acquired by the signal acquisition unit (2020), a detection signal extraction unit (2060) extracts, as a detection signal, a signal of any frequency band among a plurality of partial detection frequency bands into which the frequency band that is the subject of detection has been divided. A determination unit (2070) determines, in order, for each detection signal corresponding to each of the different partial detection frequency bands, whether the detection signal shows any leakage, and if at least a prescribed number of the detection signals are not showing any leakage, determines that leakage is not taking place.

    Abstract translation: 信号获取单元（2020）获取信号。 从信号获取单元（2020）获取的信号中，检测信号提取单元（2060）将作为检测信号的频带的多个部分检测频带中的任何频带的信号提取出来， 检测对象已被划分。 确定单元（2070）按顺序确定与每个不同的部分检测频带相对应的每个检测信号，检测信号是否显示任何泄漏，并且如果至少规定数量的检测信号没有显示任何泄漏 ，确定不会发生泄漏。

    Structure diagnosis apparatus, structure diagnosis method, and computer-readable recording medium
    10.
    发明授权
    Structure diagnosis apparatus, structure diagnosis method, and computer-readable recording medium 有权

    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

    IPC: G01N29/12 ,  G01H17/00 ,  G01N29/14 ,  G01N29/46

    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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