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公开(公告)号：EP1869737B1
公开(公告)日：2021-05-12
申请号：EP06738462.8
申请日：2006-03-16
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2.发明公开Interferometric signal conditioner for measurement of the absolute length of gaps in a fiber optic Fabry-Pérot interferometer 审中-公开Interferometrischer Signalkonditionierer zur Messung der absolutenLängevon Spalten in einem fiberoptischen Fabry-Pérot-Interferometer
公开(公告)号：EP1586854A2
公开(公告)日：2005-10-19
申请号：EP05252342.0
申请日：2005-04-14
申请人： Davidson Instruments
CPC分类号： G01B9/02027 , G01B9/02007 , G01B9/0209 , G01B2290/25 , G01B2290/45
摘要： A method and apparatus for quantitatively measuring, the distance of an unknown variable gap is disclosed. Light is provided to two Fabry-Perot interferometers arranged in a series, one spanning the unknown gap and the other spanning a controllably variable gap. Means for verifying the positioning of the Fabry-Perot interferometer having the controllably variable gap work in conjunction with a signal processor, a correlation burst signal detector and means for conveying the light to the various system elements to perform a comparison of detector signals from the two interferometers and quantitatively establish the gap distance. The invention may also be varied to function on a time basis, include more than one source of light, possess filter means to distinguish between light sources and/or include one or more reference interferometers.
摘要翻译： 公开了一种用于定量测量未知可变间隙的距离的方法和装置。 将光提供给布置成一系列的两个法布里 - 珀罗干涉仪，一个跨越未知间隙，另一个跨越可控可变间隙。 用于验证具有可控可变间隙工作的法布里 - 珀罗干涉仪的定位与用于将信号处理器，相关突发信号检测器和相关突发信号检测器相结合的装置，用于将光传送到各种系统元件以执行来自两者的检测器信号的比较 干涉仪并定量建立间隙距离。 本发明还可以变化以在时间基础上起作用，包括多于一个光源，具有用于区分光源和/或包括一个或多个参考干涉仪的滤光器装置。
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3.发明公开Interferometric signal conditioner for measurement of the absolute length of gaps in a fiber optic Fabry-Pérot interferometer 审中-公开用于测量光纤法布里 - 珀罗干涉仪的列的绝对长度干涉信号调节器
公开(公告)号：EP1586854A3
公开(公告)日：2006-02-08
申请号：EP05252342.0
申请日：2005-04-14
申请人： Davidson Instruments
CPC分类号： G01B9/02027 , G01B9/02007 , G01B9/0209 , G01B2290/25 , G01B2290/45
摘要： A method and apparatus for quantitatively measuring, the distance of an unknown variable gap is disclosed. Light is provided to two Fabry-Perot interferometers arranged in a series, one spanning the unknown gap and the other spanning a controllably variable gap. Means for verifying the positioning of the Fabry-Perot interferometer having the controllably variable gap work in conjunction with a signal processor, a correlation burst signal detector and means for conveying the light to the various system elements to perform a comparison of detector signals from the two interferometers and quantitatively establish the gap distance. The invention may also be varied to function on a time basis, include more than one source of light, possess filter means to distinguish between light sources and/or include one or more reference interferometers.
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公开(公告)号：EP1674833A3
公开(公告)日：2007-05-30
申请号：EP05257946.3
申请日：2005-12-21
发明人： Berthold, John W.
CPC分类号： G01D5/35303 , G01D5/35383 , G01H9/004 , G01P15/093 , G01P15/18
摘要： A method and apparatus for detecting seismic vibrations using a series of MBMS units, with each MEMS unit including an interferometer is described. The interferometers on the MEMS units receive and modulate light from two differing wavelengths by way of a multiplexing scheme involving the use of Bragg gratings and light circulators, and an optoelectronic processor receives and processes the modulated light to discern vibrational movement of the system, which in turn allows for monitoring and calculation of a specified environmental parameter, such as seismic activity, temperature or pressure.
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公开(公告)号：EP1674833A2
公开(公告)日：2006-06-28
申请号：EP05257946.3
申请日：2005-12-21
申请人： Davidson Instruments
发明人： Berthold, John W.
CPC分类号： G01D5/35303 , G01D5/35383 , G01H9/004 , G01P15/093 , G01P15/18
摘要： A method and apparatus for detecting seismic vibrations using a series of MBMS units, with each MEMS unit including an interferometer is described. The interferometers on the MEMS units receive and modulate light from two differing wavelengths by way of a multiplexing scheme involving the use of Bragg gratings and light circulators, and an optoelectronic processor receives and processes the modulated light to discern vibrational movement of the system, which in turn allows for monitoring and calculation of a specified environmental parameter, such as seismic activity, temperature or pressure.
摘要翻译： 描述了使用一系列MBMS单元检测地震振动的方法和装置，其中每个MEMS单元包括干涉仪。 MEMS单元上的干涉仪通过涉及使用布拉格光栅和光循环器的复用方案接收和调制来自两个不同波长的光，并且光电子处理器接收并处理调制光以识别系统的振动运动， 转动允许监测和计算指定的环境参数，如地震活动，温度或压力。
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公开(公告)号：EP1674823A1
公开(公告)日：2006-06-28
申请号：EP05257949.7
申请日：2005-12-21
IPC分类号： G01B9/02
CPC分类号： G01B11/14 , G01B9/02004 , G01B2290/25 , G01D5/268
摘要： A method for monitoring changes in a gap which corresponds to changes in a particular environmental parameter using a tunable laser and interferometer at high frequency is disclosed. The laser light provided to the interferometer is swept through a small range of wavelengths. Light modulated by the interferometer is detected and a non-sinusoidal light intensity output curve is created, a reference point on the curve identified and subsequent sweep of the laser performed. The difference in time, wavelength, or frequency at the occurrence of the reference point between the two sweeps allows for measuring the relative changes in the gap and, as a result, the change in the environmental parameter.
摘要翻译： 公开了一种利用高频率的可调激光和干涉仪来监测与特定环境参数的变化相对应的间隙变化的方法。 提供给干涉仪的激光扫过一小段波长。 检测由干涉仪调制的光，并产生非正弦光强输出曲线，确定曲线上的参考点，然后进行随后的扫描。 在两次扫描之间出现参考点时的时间，波长或频率的差异允许测量间隙中的相对变化，并因此测量环境参数的变化。
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7.发明公开Interferometric signal conditioner for measurement of displacements of a Fabry-Pérot interferometer 有权Interferometrischer Signalkonditionierer zur Messung von Verschiebungen eines Fabry-Pérot-Interferometers
公开(公告)号：EP1598635A1
公开(公告)日：2005-11-23
申请号：EP05252344.6
申请日：2005-04-15
申请人： Davidson Instruments
CPC分类号： G01B9/02007 , G01B9/02027 , G01B9/02057 , G01B9/0209 , G01B2290/25 , G01B2290/45
摘要： A signal conditioner to measure the length of an interferometric gap in a Fabry-Perot sensor (interferometer). The invention includes a light source, a Fabry-Perot interferometer capable of spanning a range of gaps in response to physical changes in the environment, a second interferometer that is placed in series with the Fabry-Perot interferometer which does not filter any particular wavelengths of light but acts as an optical cross-correlator such as a Fizeau wedge, a detector for converting the correlated light signal into electronic signals, and an electronic processor which controls system elements and generates a signal indicative of the length of the gap spanned by the Fabry-Perot sensor.
摘要翻译： 用于测量法布里 - 珀罗传感器（干涉仪）中的干涉距离长度的信号调节器。 本发明包括光源，能够响应于环境中的物理变化跨越一定范围的间隙的法布里 - 珀罗干涉仪;与法布里 - 珀罗干涉仪串联放置的第二干涉仪，该干涉仪不过滤任何特定波长的 光，但用作光学互相关器，例如Fizeau楔，用于将相关光信号转换为电子信号的检测器，以及控制系统元件并产生指示由法布里跨越的间隙的长度的信号的电子处理器 传感器
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公开(公告)号：EP1869737A2
公开(公告)日：2007-12-26
申请号：EP06738462.8
申请日：2006-03-16
IPC分类号： H01S3/13
CPC分类号： G02B6/322 , G01B9/02068 , G01B2290/25 , G01D5/268 , G02B6/32 , G02B6/34
摘要： In a Fabry-Perot interferometer based sensor if insufficient light reflected from the sensor re-enters the fiber, the results from the Fabry-Perot interferometer-based sensor are compromised. Accordingly, a sensor assembly is provided that comprises an optical fiber having an optical axis, a lens in optical communication with the optical fiber, the lens having an optical axis and the lens capable of transmitting a beam of light, a reflective surface, the reflective surface spaced from the lens such that the beam of light transmitted from the lens is capable of reflecting from the reflective surface back to the lens, and an alignment device capable of aligning the beam of light transmitted from the lens substantially perpendicular with the reflective surface.
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9.发明公开DIFFERENTIAL PRESSURE TRANSDUCER WITH FABRY-PEROT FIBER OPTIC DISPLACEMENT SENSOR 审中-公开采用FABRY-PEROT纤维光学位移传感器的差压传感器
公开(公告)号：EP1740916A2
公开(公告)日：2007-01-10
申请号：EP05735621.4
申请日：2005-04-15
IPC分类号： G01L7/00
CPC分类号： G01L9/0079 , G01L13/025
摘要： A differential pressure transducer which incorporates a Fabry-Perot sensor for direct quantitative measurements of the distance displaced by a piston abutting two pressure boundaries is described. The apparatus includes a piston with an annular protrusion which is fitted into a transducer housing having a peripheral groove that serves as a stop to prevent damage to the sensor in overpressure situations. A method of measuring differential pressure using a Fabry-Perot sensor is also contemplated.
摘要翻译： 描述了一种结合法布里 - 珀罗传感器的差压传感器，用于直接定量测量邻接两个压力边界的活塞所移动的距离。 该设备包括具有环形突起的活塞，该环形突起装配到换能器壳体中，该换能器壳体具有周边凹槽，该周边凹槽用作止动件以防止在过压情况下损坏传感器。 还设想了使用法布里 - 珀罗传感器测量差压的方法。
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公开(公告)号：EP1674833A8
公开(公告)日：2006-10-04
申请号：EP05257946.3
申请日：2005-12-21
发明人： Berthold, John W.
CPC分类号： G01D5/35303 , G01D5/35383 , G01H9/004 , G01P15/093 , G01P15/18
摘要： A method and apparatus for detecting seismic vibrations using a series of MBMS units, with each MEMS unit including an interferometer is described. The interferometers on the MEMS units receive and modulate light from two differing wavelengths by way of a multiplexing scheme involving the use of Bragg gratings and light circulators, and an optoelectronic processor receives and processes the modulated light to discern vibrational movement of the system, which in turn allows for monitoring and calculation of a specified environmental parameter, such as seismic activity, temperature or pressure.
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