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公开(公告)号：EP2060933B1
公开(公告)日：2018-10-10
申请号：EP08168797.2
申请日：2008-11-11
申请人： Optoplan AS
IPC分类号： G01H9/00 , G01P15/093 , G01D5/353 , G01V1/24 , G01V1/22
CPC分类号： G01H9/004 , G01D5/35312 , G01D5/35396 , G01P15/093 , G01V1/226 , G01V1/24 , G01V2210/1427
摘要： Methods and apparatus for interrogating optical sensors with high slew rates using non-uniform sampling are provided. The transmission of optical signals in a non-uniform pattern is employed to allow for demodulation of fringe rates exceeding the commonly understood Nyquist frequency limit given as one half of the mean sampling frequency. By monitoring the time dependent fringe frequency and assuming that the fringe frequency has a limited bandwidth, only a limited bandwidth smaller than the Nyquist bandwidth around the instantaneous fringe frequency needs to be reconstructed at any time.
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公开(公告)号：EP2053364A1
公开(公告)日：2009-04-29
申请号：EP08167510.0
申请日：2008-10-24
申请人： OPTOPLAN AS
CPC分类号： G01H9/004 , G01D5/35303
摘要： A method for detecting a sensor phase 416 in an interferometric system 100, charactized by shifting a detected interference signal 406 in frequency, and a corresponding system.
摘要翻译： 一种用于检测干涉仪系统100中的传感器相位416的方法，其特征在于通过移动检测到的频率的干扰信号406和对应的系统。
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3.发明公开
公开(公告)号：EP2060933A3
公开(公告)日：2014-10-08
申请号：EP08168797.2
申请日：2008-11-11
申请人： Optoplan AS
CPC分类号： G01H9/004 , G01D5/35312 , G01D5/35396 , G01P15/093 , G01V1/226 , G01V1/24 , G01V2210/1427
摘要： Methods and apparatus for interrogating optical sensors with high slew rates using non-uniform sampling are provided. The transmission of optical signals in a non-uniform pattern is employed to allow for demodulation of fringe rates exceeding the commonly understood Nyquist frequency limit given as one half of the mean sampling frequency. By monitoring the time dependent fringe frequency and assuming that the fringe frequency has a limited bandwidth, only a limited bandwidth smaller than the Nyquist bandwidth around the instantaneous fringe frequency needs to be reconstructed at any time.
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公开(公告)号：EP2053364B1
公开(公告)日：2015-04-01
申请号：EP08167510.0
申请日：2008-10-24
申请人： Optoplan AS
CPC分类号： G01H9/004 , G01D5/35303
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5.发明公开Non-uniform Sampling to Extend Dynamic Range of Interferometric Sensors 审中-公开oren oren oren oren oren oren oren oren oren oren oren oren oren oren oren
公开(公告)号：EP2060933A2
公开(公告)日：2009-05-20
申请号：EP08168797.2
申请日：2008-11-11
申请人： OPTOPLAN AS
CPC分类号： G01H9/004 , G01D5/35312 , G01D5/35396 , G01P15/093 , G01V1/226 , G01V1/24 , G01V2210/1427
摘要： Methods and apparatus for interrogating optical sensors with high slew rates using non-uniform sampling are provided. The transmission of optical signals in a non-uniform pattern is employed to allow for demodulation of fringe rates exceeding the commonly understood Nyquist frequency limit given as one half of the mean sampling frequency. By monitoring the time dependent fringe frequency and assuming that the fringe frequency has a limited bandwidth, only a limited bandwidth smaller than the Nyquist bandwidth around the instantaneous fringe frequency needs to be reconstructed at any time.
摘要翻译： 提供了使用非均匀采样来询问具有高压摆率的光学传感器的方法和装置。 采用不均匀图案的光信号的传输允许解调超过通常被认为是平均采样频率的一半给出的奈奎斯特频率极限的条纹速率。 通过监测时间依赖条纹频率并假设条纹频率具有有限的带宽，则只需要在瞬时条纹频率周围小于Nyquist带宽的有限带宽就可以在任何时候被重构。
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6.发明授权
公开(公告)号：EP2860498B1
公开(公告)日：2017-12-06
申请号：EP13187914.0
申请日：2013-10-09
申请人： Optoplan AS
CPC分类号： G01B9/02075 , G01B9/02056 , G01B9/0207 , G01D5/35335 , G01D5/35387 , G01D5/3539 , G01H9/004 , G01V1/186
摘要： The invention relates to a method of processing data from a distributed fibre-optic interferometric sensor system for measuring a measurand, the system comprising multiple interferometric sensors. The method comprises interrogating two or more of the multiple interferometric sensors to record a raw measurement time series for each of the sensors. The method further comprises calculating a common reference time series as a measure of central tendency of the raw measurement time series from two or more reference sensors, the reference sensors being selected from the multiple interferometric sensors. Finally, the method comprises compensating at least one raw measurement time series from a measurement sensor selected from the multiple interferometric sensors with the common reference time series to produce a compensated measurement time series, the measurement sensor being configured to be sensitive to the measurand. The invention further relates to a distributed fibre-optic interferometric sensor system.
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公开(公告)号：EP2860498A1
公开(公告)日：2015-04-15
申请号：EP13187914.0
申请日：2013-10-09
申请人： Optoplan AS
CPC分类号： G01B9/02075 , G01B9/02056 , G01B9/0207 , G01D5/35335 , G01D5/35387 , G01D5/3539 , G01H9/004 , G01V1/186
摘要： The invention relates to a method of processing data from a distributed fibre-optic interferometric sensor system for measuring a measurand, the system comprising multiple interferometric sensors. The method comprises interrogating two or more of the multiple interferometric sensors to record a raw measurement time series for each of the sensors. The method further comprises calculating a common reference time series as a measure of central tendency of the raw measurement time series from two or more reference sensors, the reference sensors being selected from the multiple interferometric sensors. Finally, the method comprises compensating at least one raw measurement time series from a measurement sensor selected from the multiple interferometric sensors with the common reference time series to produce a compensated measurement time series, the measurement sensor being configured to be sensitive to the measurand. The invention further relates to a distributed fibre-optic interferometric sensor system.
摘要翻译： 本发明涉及一种从用于测量被测量的分布式光纤干涉测量传感器系统处理数据的方法，所述系统包括多个干涉测量传感器。 该方法包括询问多个干涉测量传感器中的两个或更多个以记录每个传感器的原始测量时间序列。 该方法还包括计算公共参考时间序列作为来自两个或更多个参考传感器的原始测量时间序列的集中趋势的度量，参考传感器选自多个干涉测量传感器。 最后，该方法包括从具有公共参考时间序列的多个干涉测量传感器中选出的测量传感器补偿至少一个原始测量时间序列，以产生经补偿的测量时间序列，该测量传感器被配置为对被测量敏感。 本发明还涉及分布式光纤干涉测量传感器系统。
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