公开(公告)号：US20180188077A1

公开(公告)日：2018-07-05

申请号：US15306832

申请日：2015-04-28

Applicant: OPTOPLAN AS

Inventor： Erlend Ronnekleiv ,  Ole Henrik Waagaard

IPC: G01D5/26 ,  G01B9/02

CPC classification number: G01D5/266 ,  G01B9/02 ,  G01B2290/70 ,  G01D5/268

Abstract: The invention relates to a method of interrogating an interferometric optical fibre sensor system including a laser source configured to generate interrogation light and a sensor array with at least a first reflector and a second reflector. The method includes continuously and repeatedly frequency sweeping the interrogation light from the laser source within a sweep bandwidth (SWB) over a sweep duration (tsw) with a substantially constant sweep rate r=SBW/tsw to produce a swept interrogation light signal, launching the swept interrogation light signal is launched into the sensor array, detecting reflected signals being returned from the sensor array by each of the reflectors, respectively, wherein detection includes mixing a return light signal from the sensor array with a local oscillator signal onto an optical receiver to produce an electrical radio frequency signal, demultiplexing the electrical radio frequency signal into a first signal channel and a second signal channel, corresponding to the first and second reflector, respectively, demodulating each of the first and second signal channel into a first phase response from the first reflector and a second phase response from the second reflector, and subtracting the first phase response from the second phase response to obtain a sensor phase signal.

公开(公告)号：US09703007B2

公开(公告)日：2017-07-11

申请号：US14046169

申请日：2013-10-04

Applicant: Optoplan AS

Inventor： Arne Berg ,  Jon Thomas Kringlebotn

IPC: H01R43/00 ,  G01V13/00 ,  G01P15/093 ,  G01V1/20

CPC classification number: G01V13/00 ,  G01P15/093 ,  G01V1/201 ,  Y10T29/49826

Abstract: There is provided a solid seismic streamer cable for use in seismic surveying in marine environments. The streamer is characterized by a buffer layer 2 which is provided with a cut-out 50 and a sensor element arranged in the cut-out 50. There is also provided an associated hydrophone for integration into the seismic streamer cable. The hydrophone is characteristic in a split-element sensor base 10, 11 being suited for efficient mounting into the cut-outs 50 of the seismic cable. There is also provided an associated accelerometer for integration into the seismic streamer cable. The accelerometer is characteristic by a split-element sensor base 30, 35 for being efficiently arranged into the cut-outs 50 of the seismic cable. A method of producing a seismic streamer cable according to the invention incorporating a hydrophone or accelerometer according to the invention is also provided.

公开(公告)号：US08611180B2

公开(公告)日：2013-12-17

申请号：US13109794

申请日：2011-05-17

Applicant: Arne Berg ,  Torbjørn Heglum ,  Roar Furuhaug ,  Tormod Bliksås

Inventor： Arne Berg ,  Torbjørn Heglum ,  Roar Furuhaug ,  Tormod Bliksås

IPC: G01V1/38 ,  G01V1/16 ,  G02B6/44

CPC classification number: G01V1/201 ,  G01V1/38 ,  G01V2210/1427 ,  Y10T29/49117

Abstract: Methods and apparatus for cable termination and sensor integration at a sensor station within an ocean bottom seismic (OBS) cable array are disclosed. The sensor stations include a housing for various sensor components. Additionally, the sensor stations can accommodate an excess length of any data transmission members which may not be cut at the sensor station while enabling connection of one or more cut data transmission members with the sensor components. The sensor stations further manage any strength elements of the cable array.

Abstract translation: 公开了在海底地震（OBS）电缆阵列内的传感器站处的电缆终端和传感器集成的方法和装置。 传感器站包括用于各种传感器部件的壳体。 此外，传感器站可以容纳任何数据传输构件的多余长度，这些数据传输构件可以在传感器站处不被切割，同时能够使一个或多个切割数据传输构件与传感器部件连接。 传感器站进一步管理电缆阵列的任何强度元件。

公开(公告)号：US07969817B2

公开(公告)日：2011-06-28

申请号：US12578466

申请日：2009-10-13

Applicant: Arne Berg ,  Torbjørn Heglum ,  Roar Furuhaug ,  Tormod Bliksås

Inventor： Arne Berg ,  Torbjørn Heglum ,  Roar Furuhaug ,  Tormod Bliksås

IPC: G01V1/38

CPC classification number: G01V1/201 ,  G01V1/38 ,  G01V2210/1427 ,  Y10T29/49117

Abstract: Methods and apparatus for cable termination and sensor integration at a sensor station within an ocean bottom seismic (OBS) cable array are disclosed. The sensor stations include a housing for various sensor components. Additionally, the sensor stations can accommodate an excess length of any data transmission members which may not be cut at the sensor station while enabling connection of one or more cut data transmission members with the sensor components. The sensor stations further manage any strength elements of the cable array.

Abstract translation: 公开了在海底地震（OBS）电缆阵列内的传感器站处的电缆终端和传感器集成的方法和装置。 传感器站包括用于各种传感器部件的壳体。 此外，传感器站可以容纳任何数据传输构件的多余长度，这些数据传输构件可以在传感器站处不被切割，同时能够使一个或多个切割数据传输构件与传感器部件连接。 传感器站进一步管理电缆阵列的任何强度元件。

公开(公告)号：US07688673B2

公开(公告)日：2010-03-30

申请号：US11932056

申请日：2007-10-31

Applicant: Erlend Rønnekleiv ,  Ole Henrik Waagaard ,  Hilde Nakstad ,  Arne Berg

Inventor： Erlend Rønnekleiv ,  Ole Henrik Waagaard ,  Hilde Nakstad ,  Arne Berg

IPC: G01V1/40

CPC classification number: G01D5/35383 ,  G01V1/20

Abstract: Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments, networks of optical ocean bottom seismic (OBS) stations are provided, in which sensor stations are efficiently deployed in a modular fashion as series of array cable modules deployed along a multi-fiber cable.

Abstract translation: 提供了地震传感器系统和传感器站拓扑，以及相应的电缆和传感器站组件，制造和部署技术。 对于一些实施例，提供了光学海底地震（OBS）站的网络，其中传感器站以模块化方式被有效地部署为沿着多光纤缆线部署的一系列阵列电缆模块。

公开(公告)号：US07245382B2

公开(公告)日：2007-07-17

申请号：US10693619

申请日：2003-10-24

Applicant: Erlend Ronnekleiv

Inventor： Erlend Ronnekleiv

IPC: G01B9/02

CPC classification number: G01B9/0207 ,  G01B9/02007 ,  G01B2290/25 ,  G01B2290/60

Abstract: Embodiments of the present invention generally provide methods, apparatus, and systems for compensating for frequency fluctuations in source light used to interrogate an optical sensor. The optical sensor may be interrogated to generate a sensor signal. A reference device co-located with the optical sensor may also be interrogated to generate a reference signal. Optical parameters extracted from the reference signal may be used to correct parameters extracted from a sensor signal.

Abstract translation: 本发明的实施例通常提供用于补偿用于询问光学传感器的源光中的频率波动的方法，装置和系统。 可以询问光学传感器以产生传感器信号。 也可以询问与光学传感器同时定位的参考装置以产生参考信号。 从参考信号提取的光学参数可以用于校正从传感器信号提取的参数。

公开(公告)号：US07206075B2

公开(公告)日：2007-04-17

申请号：US11535410

申请日：2006-09-26

Applicant: Ole Henrik Waagaard

Inventor： Ole Henrik Waagaard

IPC: G01B9/02

CPC classification number: G01D5/35303 ,  G01B11/18 ,  G01D5/35383 ,  G02B6/02076

Abstract: A method and apparatus for reducing crosstalk between sensors in an inline Fabry-Perot (FP) sensor array. The inline FP sensor array comprises a plurality of fiber Bragg gratings arranged periodically along an optical fiber. The sensors are formed between each of the Bragg gratings. A light source provides multiplexed pulses as interrogation pulses for the array. The light pulses are applied to one end of the sensor array and a light detector detects reflected pulses. The detected pulses comprise a composite of reflections from all the Bragg gratings along the fiber. The apparatus processes the detected signals using an inverse scattering algorithm to detect an accurate phase response from each of the Bragg sensors while reducing crosstalk from other Bragg sensors within the array. One form of inverse scattering algorithm is a layer-peeling algorithm.

Abstract translation: 一种减少线性法布里 - 珀罗（FP）传感器阵列中传感器之间串扰的方法和装置。 在线FP传感器阵列包括沿着光纤周期性排列的多个光纤布拉格光栅。 传感器形成在每个布拉格光栅之间。 光源提供复用脉冲作为阵列的询问脉冲。 光脉冲被施加到传感器阵列的一端，光检测器检测反射脉冲。 所检测的脉冲包括来自沿着光纤的所有布拉格光栅的反射的复合。 该装置使用逆散射算法来处理检测到的信号，以从布拉格传感器中获得精确的相位响应，同时减少阵列内其他布拉格传感器的串扰。 逆散射算法的一种形式是层剥离算法。

公开(公告)号：US5844927A

公开(公告)日：1998-12-01

申请号：US618789

申请日：1996-03-20

Applicant: Jon Thomas Kringlebotn

Inventor： Jon Thomas Kringlebotn

IPC: G01F1/38 ,  G01L9/00 ,  G01L11/02 ,  H01S3/067 ,  H01S3/08 ,  H01S3/102 ,  H01S3/30

CPC classification number: G01L9/0076 ,  G01F1/383 ,  G01L11/025 ,  H01S3/0675 ,  H01S3/0809 ,  H01S3/102

Abstract: An optical end-pumped fiber laser doped with one or more rare-earths and with distributed feedback (DFB) via a fiber Bragg-grating, which is oscillating on two orthogonally polarized wavelengths. The distance between the wavelengths may be tuned by changing the birefringence of the fiber. The laser may be applied as a polarimetric sensor in which an asymmetrical force changes the wavelength separation, or as a tunable two-wavelength source. A particular preferred field of application is for measuring the pressure in pipes, to determine the flow.

Abstract translation: 掺杂有一个或多个稀土并具有分布反馈（DFB）的光学末端泵浦光纤激光器，其经由两个正交极化波长振荡的光纤布拉格光栅。 可以通过改变光纤的双折射来调节波长之间的距离。 可以将激光器用作偏光传感器，其中不对称力改变波长间隔，或作为可调谐的双波长源。 特别优选的应用领域是用于测量管道中的压力，以确定流量。

公开(公告)号：US10153626B2

公开(公告)日：2018-12-11

申请号：US13447960

申请日：2012-04-16

Applicant: Arne Berg

Inventor： Arne Berg

IPC: H02G1/10 ,  G02B6/50 ,  H02G9/02

Abstract: A subsea installation tool for installing a flexible body, e.g. a subsea fiber cable on a seabed from a surface vessel, and an associated method for installing the flexible body on the seabed is provided. The installation tool includes a tensioner that may be coupled to the flexible body to actively pull it down, thus increasing tension in an upper section of the cable from the installation vessel to the installation tool. High tension in the upper part of the cable gives good control even in strong sea currents. At the same time the tensioner enables lower tension in the bottom part cable from the installation tool to the seabed, giving good control of the touchdown position on the seabed.

公开(公告)号：US07679989B2

公开(公告)日：2010-03-16

申请号：US11957196

申请日：2007-12-14

Applicant: Arne Berg ,  Torbjørn Heglum ,  Roar Furuhaug ,  Tormod Bliksås

Inventor： Arne Berg ,  Torbjørn Heglum ,  Roar Furuhaug ,  Tormod Bliksås

IPC: G01V1/38

CPC classification number: G01V1/201 ,  G01V1/38 ,  G01V2210/1427 ,  Y10T29/49117

Abstract: Methods and apparatus for cable termination and sensor integration at a sensor station within an ocean bottom seismic (OBS) cable array are disclosed. The sensor stations include a housing for various sensor components. Additionally, the sensor stations can accommodate an excess length of any data transmission members which may not be cut at the sensor station while enabling connection of one or more cut data transmission members with the sensor components. The sensor stations further manage any strength elements of the cable array.

Abstract translation: 公开了在海底地震（OBS）电缆阵列内的传感器站处的电缆终端和传感器集成的方法和装置。 传感器站包括用于各种传感器部件的壳体。 此外，传感器站可以容纳任何数据传输构件的多余长度，这些数据传输构件可以在传感器站处不被切割，同时能够使一个或多个切割数据传输构件与传感器部件连接。 传感器站进一步管理电缆阵列的任何强度元件。