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    • 1. 发明授权
    • Method for measuring volumetric changes of object
    • 测量物体体积变化的方法
    • US09360304B2
    • 2016-06-07
    • US14419514
    • 2012-08-10
    • Ziqiu XueYoshiaki YamauchiKinzo Kishida
    • Ziqiu XueYoshiaki YamauchiKinzo Kishida
    • G01B11/16G01B11/24G01D5/353G01F17/00G01D18/00G01D5/26G01V8/16G01B21/04
    • G01B11/16G01B11/18G01B11/24G01B21/042G01D5/268G01D5/35361G01D5/35364G01D18/00G01F17/00G01V8/16
    • Under a known pressure is externally applied to a reference member to which an optical fiber is fixed, test light is allowed to enter the optical fiber, and at least one of a reference Brillouin measurement for determining a reference Brillouin frequency shift amount based on the Brillouin scattering phenomenon, and a reference Rayleigh measurement for determining a reference Rayleigh frequency shift amount based on the Rayleigh scattering phenomenon is performed. A Brillouin measurement coefficient or a Rayleigh measurement coefficient is determined from these calculation results. An optical fiber is fixed to a sample member, the volumetric change of which is unknown, and the same sample Brillouin measurement or sample Rayleigh measurement is performed to determine the frequency shift amount. The volumetric change of the sample member is determined from the sample Brillouin or the sample Rayleigh frequency shift amount, and from the Brillouin or the Rayleigh measurement coefficient.
    • 在已知的压力下,外部施加到固定有光纤的参考构件,允许测试光进入光纤,并且基于布里渊中的至少一个用于确定基准布里渊频移量的参考布里渊测量 并且执行用于基于瑞利散射现象确定参考瑞利频移量的参考瑞利测量。 从这些计算结果确定布里渊测量系数或瑞利测量系数。 将光纤固定到样品构件,其体积变化是未知的,并且执行相同的样品布里渊测量或样品瑞利测量以确定频移量。 样品构件的体积变化由样品布里渊或样品瑞利频移量以及布里渊或瑞利测量系数确定。
    • 2. 发明授权
    • Distributed optical fiber sensor
    • 分布式光纤传感器
    • US07719666B2
    • 2010-05-18
    • US11630185
    • 2004-06-25
    • Kinzo KishidaTekken LiShenbin Lin
    • Kinzo KishidaTekken LiShenbin Lin
    • G01N21/00
    • G01L1/242G01B11/18G01D5/35364G01K11/32
    • A distributed optical fiber sensor uses a Brillouin scattering phenomenon to avoid manual adjustment and to measure strain and/or temperature with high accuracy and high spatial resolution. A stepwise optical light source generates an optical pulse having a stepwise distribution of intensity to increase toward the center, and a continuous light source generates continuous light on. The optical pulse is incident on a sensing optical fiber as probe light and the continuous light is incident as pump light to cause a Brillouin scattering phenomenon between the probe light and the pump light. A Brillouin time domain detector determines a Brillouin loss or gain spectrum from the light emerging from the sensing optical fiber and attributed to the Brillouin scattering phenomenon, and measures strain in and/or temperature of the sensing optical fiber in the longitudinal direction thereof based on the determined Brillouin loss or gain spectrum.
    • 分布式光纤传感器使用布里渊散射现象来避免手动调节,并以高精度和高空间分辨率测量应变和/或温度。 逐步光学光源产生具有朝向中心增加的强度的逐步分布的光脉冲,并且连续的光源产生连续的光。 光脉冲作为探测光入射到感测光纤上,连续光作为泵浦光入射,引起探测光与泵浦光之间的布里渊散射现象。 布里渊时域检测器从感测光纤出射的光确定布里渊损耗或增益光谱,并归因于布里渊散射现象,并且基于该方法测量感测光纤在其纵向上的应变和/或温度 确定的布里渊损失或增益谱。
    • 4. 发明授权
    • Distributed optical fiber sensor system
    • 分布式光纤传感器系统
    • US07170590B2
    • 2007-01-30
    • US10533049
    • 2002-11-01
    • Kinzo Kishida
    • Kinzo Kishida
    • G01B11/16
    • G01D5/35383G01B11/16G01D5/35364G01K11/32G01K11/3206G01M11/083
    • A distribution optical fiber sensor system measures distortion and temperature of a structure with a high spatial resolution. The system has an optical fiber on an object to be measured. A light source emits a first pulse light having a pulse width longer than a transient response of an acoustic phonon and a second pulse light after a time interval during which vibration of the acoustic phonon is maintained thereby supplying the pulse lights to the optical fiber. A detector detects scattering gain spectra of a Brillouin-scattered light created in the optical fiber by the second pulse light at intervals corresponding to twice the time obtained by equally dividing the pulse width of the second pulse light. A controlling/calculating unit calculates distortion and/or temperature based on the scattering gain spectra for sections of the optical fiber corresponding to the scattering gain spectra at the respective time intervals.
    • 分布式光纤传感器系统测量具有高空间分辨率的结构的失真和温度。 该系统在待测物体上具有光纤。 在保持声学声子的振动的时间间隔之后,光源发射具有比声学声子和第二脉冲光的瞬态响应更长的脉冲宽度的第一脉冲光,从而向光纤提供脉冲光。 检测器通过第二脉冲光检测在光纤中产生的布里渊散射光的散射增益光谱,其间隔对应于通过等分第二脉冲光的脉冲宽度获得的时间的两倍。 控制/计算单元基于在各时间间隔对应于散射增益光谱的光纤部分的散射增益光谱计算失真和/或温度。
    • 5. 发明申请
    • Distributed optical fiber sensor system
    • 分布式光纤传感器系统
    • US20060018586A1
    • 2006-01-26
    • US10533049
    • 2002-11-01
    • Kinzo Kishida
    • Kinzo Kishida
    • G02B6/00
    • G01D5/35383G01B11/16G01D5/35364G01K11/32G01K11/3206G01M11/083
    • A distribution optical fiber sensor system measures distortion and temperature of a structure with a high spatial resolution. The system has an optical fiber on an object to be measured. A light source emits a first pulse light having a pulse width longer than a transient response of an acoustic phonon and a second pulse light after a time interval during which vibration of the acoustic phonon is maintained thereby supplying the pulse lights to the optical fiber. A detector detects scattering gain spectra of a Brillouin-scattered light created in the optical fiber by the second pulse light at intervals corresponding to twice the time obtained by equally dividing the pulse width of the second pulse light. A controlling/calculating unit calculates distortion and/or temperature based on the scattering gain spectra for sections of the optical fiber corresponding to the scattering gain spectra at the respective time intervals.
    • 分布式光纤传感器系统测量具有高空间分辨率的结构的失真和温度。 该系统在待测物体上具有光纤。 在保持声学声子的振动的时间间隔之后,光源发射具有比声学声子和第二脉冲光的瞬态响应更长的脉冲宽度的第一脉冲光,从而向光纤提供脉冲光。 检测器通过第二脉冲光检测在光纤中产生的布里渊散射光的散射增益光谱,其间隔对应于通过等分第二脉冲光的脉冲宽度获得的时间的两倍。 控制/计算单元基于在各时间间隔对应于散射增益光谱的光纤部分的散射增益光谱计算失真和/或温度。
    • 10. 发明申请
    • Distributed Optical Fiber Sensor
    • 分布式光纤传感器
    • US20080068586A1
    • 2008-03-20
    • US11630185
    • 2004-06-25
    • Kinzo KishidaTekken LiShenbin Lin
    • Kinzo KishidaTekken LiShenbin Lin
    • G01B11/16
    • G01L1/242G01B11/18G01D5/35364G01K11/32
    • A distributed optical fiber sensor uses a Brillouin scattering phenomenon to avoid manual adjustment and to measure strain and/or temperature with high accuracy and high spatial resolution. A stepwise optical light source generates an optical pulse having a stepwise distribution of intensity to increase toward the center, and a continuous light source generates continuous light on. The optical pulse is incident on a sensing optical fiber as probe light and the continuous light is incident as pump light to cause a Brillouin scattering phenomenon between the probe light and the pump light. A Brillouin time domain detector determines a Brillouin loss or gain spectrum from the light emerging from the sensing optical fiber and attributed to the Brillouin scattering phenomenon, and measures strain in and/or temperature of the sensing optical fiber in the longitudinal direction thereof based on the determined Brillouin loss or gain spectrum.
    • 分布式光纤传感器使用布里渊散射现象来避免手动调节,并以高精度和高空间分辨率测量应变和/或温度。 逐步光学光源产生具有朝向中心增加的强度的逐步分布的光脉冲,并且连续的光源产生连续的光。 光脉冲作为探测光入射到感测光纤上,连续光作为泵浦光入射,引起探测光与泵浦光之间的布里渊散射现象。 布里渊时域检测器从感测光纤出射的光确定布里渊损耗或增益光谱,并归因于布里渊散射现象,并且基于该方法测量感测光纤在其纵向上的应变和/或温度 确定的布里渊损失或增益谱。