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公开(公告)号：US20240393163A1
公开(公告)日：2024-11-28
申请号：US18690773
申请日：2021-09-28
Applicant: NEC Corporation
Inventor： Masatake Takahashi , Hitoshi Sakurai , Yuma Matsuda
Abstract: A system includes: an optical fiber laid along a road; a sensing unit configured to receive an optical signal from the optical fiber and detect vibration generated by a vehicle traveling on the road based on the optical signal; a calculation unit configured to calculate vibration data indicating the vibration; a traveling state detection unit configured to detect, for each vehicle traveling on the road, a vehicle speed of the vehicle and an inter-vehicle distance based on the vibration data; a vehicle group detection unit configured to detect, as a dangerous vehicle group, a vehicle group of which the vehicle speed is equal to or higher than a speed threshold and of which an inter-vehicle distance is equal to or shorter than a distance threshold; and a broadcasting unit configured to broadcast the detection of the dangerous vehicle group to a predetermined broadcasting destination.
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Patent Agency Ranking
22.发明公开公开(公告)号：US20240169827A1
公开(公告)日：2024-05-23
申请号：US18279333
申请日：2022-02-16
Applicant: NEC Corporation
Inventor： Masatake Takahashi , Hitoshi Sakurai
CPC classification number: G08G1/0133 , G08G1/04
Abstract: A traffic monitoring apparatus (103) includes a front position detection unit (112) that detects a front position of congestion on a road R, and an output unit (114) that outputs, when movement of the detected front position satisfies a previously determined criterion, congestion information according to the criterion. The front position detection unit (112) acquires a vehicle position on the road R acquired based on optical fiber sensing utilizing an optical fiber laid on the road R.
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23.发明公开公开(公告)号：US20230274634A1
公开(公告)日：2023-08-31
申请号：US18017466
申请日：2020-07-28
Applicant: NEC Corporation
Inventor： Masatake Takahashi , Hitoshi Sakurai
IPC: G08G1/01 , G08G1/04 , G08G1/056 , G08G1/0967 , G06V20/54
CPC classification number: G08G1/0129 , G08G1/0133 , G08G1/04 , G08G1/056 , G08G1/096725 , G06V20/54
Abstract: An object is to holistically recognize a wide-area traffic condition in real time. A traffic monitoring apparatus (102) includes a position acquisition unit (106) that acquires position information indicating a vehicle position on a road, and a history generation unit (107) that generates history information indicating a change over time in the vehicle position, based on the position information. The position acquisition unit (106) acquires position information to be acquired, for example, based on optical fiber sensing utilizing an optical fiber being laid on a road. The traffic monitoring apparatus (102) may further include an abnormality detection unit (107) that detects an abnormal event on a road, based on an event-specific history pattern indicating a pattern of a change over time in a vehicle position associated with a type of the abnormal event on the road, and the change over time in the vehicle position.
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公开(公告)号：US09921097B2
公开(公告)日：2018-03-20
申请号：US14429849
申请日：2013-09-27
Applicant: NEC Corporation
Inventor： Junichiro Mataga , Yasuhiro Sasaki , Masatake Takahashi , Shigeki Shinoda
Abstract: A sensor device includes: a first sensor group (13) in which a plurality of first vibration sensors for detecting vibration acceleration in one direction with respect to an object to be detected are arranged to face the same direction; a phase difference calculation unit (220) which, based on a plurality of first signals indicating the vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group (13), calculates a first phase difference indicating the phase difference between the plurality of first signals; and an acceleration calculation unit (230) which, using the first phase difference and the plurality of first signals, calculates vibration acceleration in a first direction perpendicular to a surface on which the plurality of first vibration sensors are arranged, and vibration acceleration in a second direction parallel to the surface on which the plurality of first vibration sensors are arranged.
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25.发明授权公开(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
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).
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公开(公告)号：US20150204726A1
公开(公告)日：2015-07-23
申请号：US14416686
申请日：2013-03-04
Applicant: NEC Corporation
Inventor： Junichiro Mataga , Yasuhiro Sasaki , Masatake Takahashi
CPC classification number: G01J5/0025 , G01J5/026 , G01J5/0806 , G01J5/0862 , G01J5/10 , G01J5/34 , G01J2001/4433 , G01J2005/106 , G01V8/00
Abstract: An infrared detection device that can detect movement, a temperature, and a stationary state of a detection object with a simple configuration is provided.The infrared detection device includes a pyroelectric infrared sensor (11), peak detecting means (12) for an electric signal waveform, peak inclination amount detecting means (13) for an electric signal waveform, peak value holding means (14) for an electrical signal waveform, and determining means (15), the sensor (11) outputs an electric signal depending on change in an infrared ray resulting from a detection object, the peak detecting means (12) detects a peak of a temporal waveform of an electric signal output by the sensor (11), the peak inclination amount detecting means (13) detects an inclination amount of a peak detected by the peak detecting means (12), the peak value holding means (14) holds an initial peak value when the detection object enters a detection region of the sensor (11), for a peak detected by the peak detecting means (12), and the determining means (15) determines entry of the detection object to and exit of the detection object from the detection region, a movement speed and a temperature of the detection object, and movement and motionlessness of the detection object in the detection region.
Abstract translation: 提供了能够以简单的结构检测检测对象的移动，温度和静止状态的红外线检测装置。 红外线检测装置包括热电式红外线传感器（11），用于电信号波形的峰值检测装置（12），用于电信号波形的峰值倾斜量检测装置（13），用于电信号的峰值保持装置 波形和确定装置（15），传感器（11）根据检测对象产生的红外线的变化输出电信号，峰值检测装置（12）检测电信号输出的时间波形的峰值 通过传感器（11），峰值倾斜量检测装置（13）检测由峰值检测装置（12）检测的峰值的倾斜量，峰值保持装置（14）保持检测对象 进入传感器（11）的检测区域，以检测由峰值检测装置（12）检测到的峰值，并且确定装置（15）确定检测对象从检测区域进入和退出检测对象， mov 检测对象的检测对象的速度和温度，检测对象的移动和静止。
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