公开(公告)号：US08661907B2

公开(公告)日：2014-03-04

申请号：US13262897

申请日：2010-03-30

申请人： Richard John Davis ,  David John Hill

发明人： Richard John Davis ,  David John Hill

IPC分类号： G01D5/32

CPC分类号： G01D5/35383

摘要： A plurality of sensors output information into a distributed acoustic sensing (DAS) system via acousto-mechanical signals. The sensors are coupled to the optic fibre at the centre of the DAS system indirectly, the acousto-mechanical signal being transmitted via an intermediary body, such as the ground or a conduit.

摘要翻译： 多个传感器通过声 - 机械信号将信息输出到分布式声感（DAS）系统中。 传感器间接耦合到DAS系统中心的光纤，声 - 机械信号通过中间体（如地面或导管）传输。

公开(公告)号：US08537345B2

公开(公告)日：2013-09-17

申请号：US13499076

申请日：2010-09-24

申请人： Roger Ian Crickmore ,  David John Hill

发明人： Roger Ian Crickmore ,  David John Hill

IPC分类号： G01N21/00

CPC分类号： G01D5/35303 ,  G01H9/004

摘要： A method of distributed acoustic sensing (DAS) whereby the derivative or rate of change of a signal backscatted from a fiber is measured. The change, or derivative of the phase measured in this way has a much smaller amplitude than the signal itself if the difference between the two times at which the signal is measured is much less than the period of the signal being measured, resulting in lower sensitivity. Frequency shifts can be applied to temporally displaced return signals to compare the rate of change, for example by employing an output interferometer arranged to modulate the signal in each arm by a different frequency shift.

摘要翻译： 一种分布式声学感测（DAS）的方法，其中测量从光纤反向扫描的信号的微分或变化率。 以这种方式测量的相位的变化或导数比信号本身的幅度小得多，如果测量信号的两次之间的差异远小于被测信号的周期，导致较低的灵敏度 。 频移可以应用于时间上移位的返回信号以比较变化率，例如通过采用布置成通过不同频移调制每个臂中的信号的输出干涉仪。

公开(公告)号：US20120017687A1

公开(公告)日：2012-01-26

申请号：US13262897

申请日：2010-03-30

申请人： Richard John Davis ,  David John Hill

发明人： Richard John Davis ,  David John Hill

IPC分类号： G01D5/32

CPC分类号： G01D5/35383

摘要： A plurality of sensors output information into a distributed acoustic sensing (DAS) system via acousto-mechanical signals. The sensors are coupled to the optic fibre at the centre of the DAS system indirectly, the acousto-mechanical signal being transmitted via an intermediary body, such as the ground or a conduit.

摘要翻译： 多个传感器通过声 - 机械信号将信息输出到分布式声感（DAS）系统中。 传感器间接耦合到DAS系统中心的光纤，声 - 机械信号通过中间体（如地面或导管）传输。

公开(公告)号：US07652245B2

公开(公告)日：2010-01-26

申请号：US12091076

申请日：2006-10-18

申请人： Roger Ian Crickmore ,  David John Hill

发明人： Roger Ian Crickmore ,  David John Hill

IPC分类号： G01J1/04

CPC分类号： G08G1/02 ,  G01D5/35361

摘要： Traffic sensing and monitoring apparatus (100) comprises a length of optical fiber (112), means (102, 103, 104, 106, 107, 109, 119) arranged to introduce a series of pulse pairs into an input end of the length, each of the pulse pairs comprising first and second pulses of radiation having a frequency difference Ω and the second pulse being delayed with respect to the first by a delay τ, and the apparatus further comprising a photodetector arranged to detect radiation which is Rayleigh-backscattered within the length of fiber towards the input end to generate an output signal in response thereto. Apparatus of the invention allows sensing and monitoring of traffic at any position along a long length of road (e.g. 5 km) with lower installation and maintenance costs per unit length compared to prior art systems providing the same spatial resolution.

摘要翻译： 交通感测和监测设备（100）包括一段长度的光纤（112），被布置成将一系列脉冲对引入长度的输入端的装置（102,103,104,106,107,109,119） 每个脉冲对包括具有频差Ω的第一和第二辐射脉冲，并且第二脉冲相对于第一脉冲相对于第一脉冲延迟延迟τ，并且该装置还包括光电检测器，该光检测器被布置成检测辐射内的瑞利反向散射 光纤朝向输入端的长度，以响应于此产生输出信号。 与提供相同空间分辨率的现有技术系统相比，本发明的装置允许在沿着长的道路（例如5km）的任何位置处感测和监测每单位长度的安装和维护成本。

公开(公告)号：US20080229825A1

公开(公告)日：2008-09-25

申请号：US10586105

申请日：2005-01-12

申请人： Roger Ian Crickmore ,  David John Hill ,  John Peter Fairfax Wooler ,  Peter James Thomas

发明人： Roger Ian Crickmore ,  David John Hill ,  John Peter Fairfax Wooler ,  Peter James Thomas

IPC分类号： G01P15/02

CPC分类号： G01H9/004 ,  G01P15/093 ,  G01V1/181 ,  G02F1/0134

摘要： A fibre optic accelerometer particularly intended for use with an interferometer using the compliant cylinder approach but further providing a seismic mass at the core of the cylinder resulting in improved sensitivity and rejection of out-of-axis inputs.

摘要翻译： 特别是与干涉仪一起使用的光纤加速度计，其使用柔性气缸方式，但进一步在气缸的核心处提供地震质量，从而提高了轴外输入的灵敏度和排除。

公开(公告)号：US07345953B2

公开(公告)日：2008-03-18

申请号：US10533761

申请日：2003-11-04

申请人： Roger Ian Crickmore ,  Sean Dormer Thomas ,  Simon Tanner ,  David John Hill ,  Philip John Nash

发明人： Roger Ian Crickmore ,  Sean Dormer Thomas ,  Simon Tanner ,  David John Hill ,  Philip John Nash

IPC分类号： G01V1/18

CPC分类号： G01V1/189 ,  G01H9/004 ,  G01V1/184

摘要： A vibration sensing device, package and system and a method of manufacturing a vibration sensing device are disclosed. The vibration sensing device comprises a body whose geometry is such that it exhibits flextensional properties.

摘要翻译： 公开了一种振动感测装置，封装和系统以及制造振动感测装置的方法。 振动检测装置包括其几何形状使其具有挠曲特性的主体。

公开(公告)号：US20120188533A1

公开(公告)日：2012-07-26

申请号：US13499076

申请日：2010-09-24

申请人： Roger Ian Crickmore ,  David John Hill

发明人： Roger Ian Crickmore ,  David John Hill

IPC分类号： G01N21/49

CPC分类号： G01D5/35303 ,  G01H9/004

摘要： A method of distributed acoustic sensing (DAS) whereby the derivative or rate of change of a signal backscatted from a fibre is measured. The change, or derivative of the phase measured in this way has a much smaller amplitude than the signal itself if the difference between the two times at which the signal is measured is much less than the period of the signal being measured, resulting in lower sensitivity. Frequency shifts can be applied to temporally displaced return signals to compare the rate of change, for example by employing an output interferometer arranged to modulate the signal in each arm by a different frequency shift.

摘要翻译： 一种分布式声学感测（DAS）的方法，其中测量从光纤反向扫描的信号的微分或变化率。 以这种方式测量的相位的变化或导数比信号本身的幅度小得多，如果测量信号的两次之间的差异远小于被测信号的周期，导致较低的灵敏度 。 频移可以应用于时间上移位的返回信号以比较变化率，例如通过采用布置成通过不同频移调制每个臂中的信号的输出干涉仪。

公开(公告)号：US20090080828A1

公开(公告)日：2009-03-26

申请号：US12282784

申请日：2007-03-08

申请人： Philip John Nash ,  Roger Ian Crickmore ,  David John Hill ,  Jonathan Westhall

发明人： Philip John Nash ,  Roger Ian Crickmore ,  David John Hill ,  Jonathan Westhall

IPC分类号： G02B6/00

CPC分类号： G01D5/35383 ,  G01D5/35303

摘要： A fibre-optic sensor array (100) comprises a line array of fibre-optic sensor packages (AX, BX, CX, DX, AY, BY, CY, DY, AZ, BZ, CZ, DZ) each having a package input/output (i/o) fibre and each being arranged to output a finite output pulse series of optical output pulses via the package i/o fibre in response to input thereto of one or more interrogating optical pulses. The array further comprises a fibre-optic bus (104,106, 108, 110) extending along the length of the line array, each package i/o fibre being optically coupled to the fibre-optic bus at a respective positions along the line array. The array allows interrogation at a higher frequency than is the case for a serial array of the same number of fibre-optic sensing packages.

摘要翻译： 光纤传感器阵列（100）包括光纤传感器封装（AX，BX，CX，DX，AY，BY，CY，DY，AZ，BZ，CZ，DZ）的线阵列， 输出（i / o）光纤，并且每个光纤布置成响应于一个或多个询问光脉冲的输入，经由封装i / o光纤输出有限的输出脉冲序列的光输出脉冲。 阵列还包括沿着线阵列的长度延伸的光纤总线（104,106,108,110），每个封装i / o光纤在沿着线阵列的相应位置处光耦合到光纤总线。 该阵列允许以比相同数量的光纤传感封装的串行阵列的情况更高的频率进行询问。

公开(公告)号：US07362497B2

公开(公告)日：2008-04-22

申请号：US10549687

申请日：2004-03-11

申请人： Benjamin Hodder ,  David John Hill

发明人： Benjamin Hodder ,  David John Hill

IPC分类号： H04B10/17

CPC分类号： G01D5/35383 ,  H01S3/06708 ,  H01S3/06737 ,  H01S3/06745 ,  H01S3/0675 ,  H01S3/08086 ,  H01S3/094003 ,  H01S3/094007 ,  H01S3/094019

摘要： This invention relates to optical fibres, fibre lasers, fibre laser arrays and sensor systems comprising fibre laser arrays. Conventional fibre laser sensor arrangements comprise a plurality of fibre lasers arranged in series along a length of optical fibre. A pump light source is located a one end of the fibre and supplies pump light energy to each of the fibre lasers in turn. Such sensor systems experience a number of disadvantages. Firstly, there is an uneven distribution of pump power along the length of the fibre which effectively limits the number of laser devices that can successfully be incorporated into the optical fibre array. Secondly, the manner in which existing sensor systems are constructed often results in back reflections, optical losses and mechanical weaknesses. The present invention provides a fibre laser which mitigates the above problems with fibre laser sensor arrays.

摘要翻译： 本发明涉及光纤，光纤激光器，光纤激光器阵列和包括光纤激光器阵列的传感器系统。 常规的光纤激光传感器装置包括沿光纤长度串联布置的多个光纤激光器。 泵浦光源位于光纤的一端，并依次向每个光纤激光器提供泵浦光能。 这种传感器系统经历许多缺点。 首先，沿着光纤的长度存在泵浦功率的不均匀分布，这有效地限制了可以成功地结合到光纤阵列中的激光器件的数量。 其次，现有传感器系统的构造方式常常导致反射反射，光学损耗和机械缺陷。 本发明提供一种光纤激光器，其减轻了光纤激光传感器阵列的上述问题。

公开(公告)号：US06493920B1

公开(公告)日：2002-12-17

申请号：US09657209

申请日：2000-09-07

申请人： David John Hill ,  Kimberly Ann Lazarz ,  Matthias Baumann ,  Matthew John Zaluzec

发明人： David John Hill ,  Kimberly Ann Lazarz ,  Matthias Baumann ,  Matthew John Zaluzec

IPC分类号： B23P2100

CPC分类号： B62D65/04 ,  B62D25/06 ,  Y10T29/49829 ,  Y10T29/49904 ,  Y10T29/49908

摘要： The present invention relates to a method of assembling a vehicle. The method comprises providing an open-top cab module comprising a metallic base frame, a plurality of exterior body panels secured to the base frame, and interior cab module trim component. A roof assembly is then provided. The roof assembly comprises a light metallic roof frame, at least one roof panel supported on the roof frame, glass components comprising at least a front windshield supported on the roof frame, and interior roof assembly trim components supported on the roof frame. The roof assembly is then secured to the cab module.

摘要翻译： 本发明涉及一种组装车辆的方法。 该方法包括提供一种敞开的驾驶室模块，其包括金属底座框架，固定到基座框架的多个外部主体面板以及内部驾驶室模块装饰构件。 然后提供屋顶组件。 屋顶组件包括轻金属屋顶框架，支撑在屋顶框架上的至少一个屋顶板，包括至少支撑在屋顶框架上的前挡风玻璃以及支撑在屋顶框架上的内部屋顶组件装饰部件的玻璃部件。 然后将车顶组件固定到驾驶室模块。