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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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12.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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公开(公告)号：US20150160071A1
公开(公告)日：2015-06-11
申请号：US14408574
申请日：2012-12-11
Applicant: NEC Corporation
Inventor： Hideki Kadosawa , Tetsuya Yoshinari , Shigeki Shinoda , Katsumi Abe , Yasuhiro Sasaki
IPC: G01H11/06
CPC classification number: G01H11/06 , G01H11/08 , G08B13/1654
Abstract: Provided are a vibration detector and a vibration detecting method, which are power saving, can detect vibration even if the vibration is very weak, and can perform both start-up of the apparatus and collection of data of vibration information by the use of only one sensor. The apparatus includes a vibration detector, a semiconductor switch, a controller and a power supply. The semiconductor switch and the controller are connected to the power supply. The vibration detector detects vibration and consequently generates a vibration voltage. The semiconductor switch includes a voltage divider for generating a bias voltage inside. The semiconductor switch detects a voltage produced by superposing the bias voltage onto the vibration voltage outputted from the vibration detector, and conducts current when the detected voltage is equal to or larger than a certain value. The controller wakes up with the current conducted by the semiconductor switch as a trigger signal.
Abstract translation: 提供了一种节电的振动检测器和振动检测方法，即使振动非常弱也能够检测振动，并且可以通过仅使用一个来执行设备的启动和收集振动信息的数据 传感器。 该装置包括振动检测器，半导体开关，控制器和电源。 半导体开关和控制器连接到电源。 振动检测器检测振动，从而产生振动电压。 半导体开关包括用于在其内部产生偏置电压的分压器。 半导体开关检测通过将偏置电压叠加到从振动检测器输出的振动电压而产生的电压，并且当检测到的电压等于或大于一定值时，传导电流。 控制器用半导体开关传导的电流作为触发信号唤醒。
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Patent Agency Ranking
公开(公告)号：US10036684B2
公开(公告)日：2018-07-31
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
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.
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公开(公告)号：US09664554B2
公开(公告)日：2017-05-30
申请号：US14408574
申请日：2012-12-11
Applicant: NEC Corporation
Inventor： Hideki Kadosawa , Tetsuya Yoshinari , Shigeki Shinoda , Katsumi Abe , Yasuhiro Sasaki
CPC classification number: G01H11/06 , G01H11/08 , G08B13/1654
Abstract: Provided are a vibration detector and a vibration detecting method, which are power saving, can detect vibration even if the vibration is very weak, and can perform both start-up of the apparatus and collection of data of vibration information by the use of only one sensor. The apparatus includes a vibration detector, a semiconductor switch, a controller and a power supply. The semiconductor switch and the controller are connected to the power supply. The vibration detector detects vibration and consequently generates a vibration voltage. The semiconductor switch includes a voltage divider for generating a bias voltage inside. The semiconductor switch detects a voltage produced by superposing the bias voltage onto the vibration voltage outputted from the vibration detector, and conducts current when the detected voltage is equal to or larger than a certain value. The controller wakes up with the current conducted by the semiconductor switch as a trigger signal.
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公开(公告)号：US20150276545A1
公开(公告)日：2015-10-01
申请号：US14431809
申请日：2013-09-13
Applicant: NEC Corporation
Inventor： Masatake Takahashi , Mizuho Tomiyama , Yasuhiro Sasaki
CPC classification number: G01M5/0025 , F17D5/06 , G01M3/00 , G01M3/243 , G01M5/0033 , G01M7/02 , G01N29/04 , G01N29/28 , G01N29/341
Abstract: The present invention provides a defect analysis device including: an excitation unit (107) that imparts vibrations of a plurality of frequencies to a fluid (110) flowing through a pipe (108); a first detector (106) that, when the excitation part (107) is imparting vibrations, detects vibrations emanating from the pipe (108); and a signal processing unit (101) that extracts a feature quantity from a vibration waveform acquired by the first detector (106), and uses the extracted feature quantity to estimate the extent of a defect formed in the pipe (108).
Abstract translation: 本发明提供了一种缺陷分析装置，包括：激励单元（107），其将多个频率的振动施加到流过管道（108）的流体（110）; 第一检测器（106），当所述激励部分（107）施加振动时，检测从所述管道（108）发出的振动; 以及从由第一检测器（106）获取的振动波形提取特征量的信号处理单元（101），并且使用所提取的特征量来估计在管道（108）中形成的缺陷的程度。
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18.发明申请公开(公告)号：US20150253216A1
公开(公告)日：2015-09-10
申请号：US14430258
申请日：2013-08-19
Applicant: NEC Corporation
Inventor： Shigeki Shinoda , Yasuhiro Sasaki , Masatake Takahashi , Junichiro Mataga , Soichiro Takata
IPC: G01M3/28
CPC classification number: G01M3/2807 , F17D5/06 , G01M3/243
Abstract: Each functional configuring unit of a leak inspection device (2000) operates in the manner that follows. A vibration acquisition unit (2020) acquires a signal indicating tubing vibrations or vibrations propagated from tubing. A filtering unit (2040) extracts a signal of a predetermined frequency band from the signal acquired by the vibration acquisition unit (2020). A characteristic value extraction unit (2060) splits the signal extracted by the filtering unit (2040) into predetermined time intervals, calculates for each split signal the absolute value of each extreme value of the magnitude of the signal, performs for each split signal a statistical process with respect to the calculated plurality of absolute values, and considers values calculated by the statistical process to be characteristic values. A leak determination unit (2080) considers inspection results to indicate the presence of a leak when a determination index value stipulated using the characteristic values is greater than a predetermined threshold.
Abstract translation: 泄漏检查装置（2000）的各功能构成单元按照以下的方式进行动作。 振动获取单元（2020）获取指示管道振动或从管道传播的振动的信号。 滤波单元（2040）从由振动获取单元获取的信号（2020）提取预定频带的信号。 特征值提取单元（2060）将由滤波单元（2040）提取的信号分割成预定的时间间隔，针对每个分割信号计算信号幅度的每个极值的绝对值，对每个分割信号执行统计 对所计算的多个绝对值进行处理，并将通过统计处理计算出的值视为特征值。 当使用特征值规定的确定指标值大于预定阈值时，泄漏确定单元（2080）考虑检查结果以指示泄漏的存在。
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公开(公告)号：US20150107363A1
公开(公告)日：2015-04-23
申请号：US14390185
申请日：2013-03-18
Applicant: NEC Corporation
Inventor： Masatake Takahashi , Shigeki Shinoda , Soichiro Takata , Shigeru Kasai , Yasuhiro Sasaki
IPC: G01H11/08
CPC classification number: G01H11/08 , G01P15/0922 , G01P15/097 , H01L41/081 , H01L41/0933
Abstract: A piezoelectric vibration sensor includes a piezoelectric element which is in a form of flat plate, an element holding plate which is in a form of flat plate, and first and second support members. An electrode is arranged on at least one plane of the piezoelectric element. The piezoelectric element is joined to one plane of the piezoelectric element. The first support member and the second support member support the piezoelectric element and the element holding plate. A vibration film activates vibration of the element holding plate between the first support member and the second support member. Moreover, the element holding plate is joined to each of the first support member and the second support member through the vibration film. As a result, it is possible to obtain high sensitivity in a wide frequency range and to withstand an impact which is added from the outside.
Abstract translation: 压电振动传感器包括平板形式的压电元件，平板形式的元件保持板以及第一和第二支撑构件。 电极布置在压电元件的至少一个平面上。 压电元件接合到压电元件的一个平面。 第一支撑构件和第二支撑构件支撑压电元件和元件保持板。 振动膜激活元件保持板在第一支撑构件和第二支撑构件之间的振动。 此外，元件保持板通过振动膜连接到第一支撑构件和第二支撑构件中的每一个。 结果，可以在宽的频率范围内获得高灵敏度并且能够承受从外部添加的冲击。
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