Detection of moving objects
    1.
    发明授权

    公开(公告)号:US10352763B2

    公开(公告)日:2019-07-16

    申请号:US13816896

    申请日:2011-08-15

    IPC分类号: G01H9/00 G06F17/00

    摘要: A system for moving object (402) detection is provided, the system comprising a fiber optic interrogator (106) adapted to provide distributed acoustic sensing on a optic fiber (104), for example arranged along a border. The measurement signals from each of a plurality of sensing portions (404, 406, 408, 410, 412) of said fiber are analyzed to determined a characteristic of a Doppler shift. The characteristic of a Doppler shift may be a generally continuous decrease in detected frequency. By detecting the time at which the rate of change of frequency is at a maximum for each of the sensing portions the time of closest approach (ti, t2, t3, t4, t5) of the object to those sensing portions can be determined with the sensing portion the object approaches closest to showing the greatest value of maximum rate of change of frequency. The distance of closest approach and velocity can be determined.

    Fracture monitoring
    2.
    发明授权
    Fracture monitoring 有权
    骨折监测

    公开(公告)号:US08950482B2

    公开(公告)日:2015-02-10

    申请号:US13320882

    申请日:2010-05-27

    摘要: This application relates to methods and apparatus for monitoring hydraulic fracturing during oil/gas well formation. A fiber optic cable (102) deployed down a well bore (106), which may be the well bore in which fracturing is performed, is interrogated to provide a distributed acoustic sensor. Data is sampled from at least one longitudinal sensing portion of the fiber and processed to provide at least fracturing characteristic. The fracturing characteristic may comprise the characteristics of high frequency transients indicative of fracturing events (606). The intensity, frequency, duration and signal evolution of the transients may be monitored to provide the fracturing characteristic. Additionally or alternatively the fracturing characteristic may comprise the longer term acoustic noise generated by fracture fluid flow to the fracture sites. The intensity and frequency of the noise may be analyzed to determine the fracturing characteristic. The method allows real-time control of the fracturing process.

    摘要翻译: 本申请涉及在油气成井期间监测水力压裂的方法和装置。 询问在井下(106)下展开的光纤电缆(102),其可以是执行压裂的井眼,以提供分布式声学传感器。 从纤维的至少一个纵向感测部分采样数据,并进行处理以至少提供压裂特性。 压裂特性可以包括指示压裂事件的高频瞬变的特征(606)。 可以监测瞬态的强度,频率,持续时间和信号演化以提供压裂特性。 附加地或替代地,压裂特性可以包括由断裂流体流向裂缝位置产生的较长期声学噪声。 可以分析噪声的强度和频率,以确定压裂特性。 该方法允许对压裂过程进行实时控制。

    Upgradable security module
    4.
    发明授权
    Upgradable security module 有权
    可升级安全模块

    公开(公告)号:US08782767B2

    公开(公告)日:2014-07-15

    申请号:US12095483

    申请日:2006-11-30

    申请人: Michael John Hill

    发明人: Michael John Hill

    摘要: The aim of the present invention is to provide a security module capable of supporting the different functions of the latest and the previous generations, by avoiding any possible attack due to this adaptability. This aim is attained by a security module comprising first communication means to a host device, first storage means and first decryption means, characterized in that it includes a state module and second communication means and physical activation or deactivation means of said second means, such activation or deactivation being managed by the state module.

    摘要翻译: 本发明的目的是提供一种能够通过避免由于这种适应性引起的任何可能的攻击来支持最新和前几代的不同功能的安全模块。 该目的通过一种安全模块来实现,该安全模块包括到主机设备的第一通信装置,第一存储装置和第一解密装置,其特征在于,它包括状态模块和第二通信装置以及所述第二装置的物理激活或去激活装置, 或停用由状态模块管理。

    Fibre optic sensor package
    5.
    发明授权
    Fibre optic sensor package 有权
    光纤传感器封装

    公开(公告)号:US08755643B2

    公开(公告)日:2014-06-17

    申请号:US12293172

    申请日:2007-03-29

    IPC分类号: G02B6/00 G01H9/00 G01V1/18

    摘要: A fiber-optic sensor package (10) comprises a serial array of fiber-optic sensing coils (14, 16, 18, 20, 22) each of which is comprised in a respective fiber-optic sensor. Four (14, 16, 18, 22) of the coils are housed in a protective casing (24). One of the coils (22) is comprised in a fiber-optic electromagnetic field sensor. The other coils are comprised in respective fiber-optic geophones and/or hydrophones. A single package of the invention allows detection of both seismic and electromagnetic signals. An array of packages of the invention provides detection of both seismic and electromagnetic signal at a series of positions over a long distance or wide area, thus avoiding the need for two conventional arrays. A packages of the invention, and an array of such packages, require little or no electrical power input.

    摘要翻译: 光纤传感器封装(10)包括光纤传感线圈(14,16,18,20,22)的串联阵列,每个光纤传感线圈包括在相应的光纤传感器中。 四个(14,16,18,22)的线圈被容纳在保护壳体(24)中。 其中一个线圈(22)包含在光纤电磁场传感器中。 其他线圈包括在相应的光纤地震检波器和/或水听器中。 本发明的单个包装允许检测地震和电磁信号。 本发明的封装阵列提供在长距离或广泛区域上的一系列位置处的地震和电磁信号的检测,从而避免了对两个常规阵列的需要。 本发明的封装和这种封装的阵列需要很少或没有电力输入。

    WEARABLE PHOTOTHERAPY DEVICE
    7.
    发明申请
    WEARABLE PHOTOTHERAPY DEVICE 审中-公开
    可爱的照相装置

    公开(公告)号:US20140074010A1

    公开(公告)日:2014-03-13

    申请号:US13818548

    申请日:2011-08-11

    IPC分类号: A61N5/06

    摘要: A wearable apparatus (100) for directing electromagnetic radiation onto at least one tissue area is disclosed. The apparatus comprises at least one radiation collection surface (101) for receiving incident electromagnetic radiation and at least one radiation emitting surface (102) adapted to direct electromagnetic radiation onto at least one target area of tissue to be treated. A light guide (103) is adapted to receive electromagnetic radiation received by at least one radiation collection surface and to direct at least part of the electromagnetic radiation to at least one radiation emitting surface, wherein a total surface area of the or each radiation collection surface is larger than a total surface area of the or each radiation emitting surface. Coupling means increases the proportion of electromagnetic radiation received by at least one radiation collection surface which enters the light guide.

    摘要翻译: 公开了一种用于将电磁辐射引导到至少一个组织区域上的可穿戴设备(100)。 所述装置包括用于接收入射电磁辐射的至少一个辐射收集表面(101)和适于将电磁辐射引导到待处理组织的至少一个目标区域上的至少一个辐射发射表面(102)。 光导(103)适于接收由至少一个辐射收集表面接收的电磁辐射并且将至少部分电磁辐射引导到至少一个辐射发射表面,其中所述或每个辐射收集表面的总表面积 大于每个辐射发射表面的总表面积。 耦合装置增加由进入光导的至少一个辐射收集表面接收的电磁辐射的比例。

    Remote sensing
    8.
    发明授权
    Remote sensing 有权
    遥感

    公开(公告)号:US08661907B2

    公开(公告)日:2014-03-04

    申请号:US13262897

    申请日:2010-03-30

    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。

    Phase based sensing
    10.
    发明授权
    Phase based sensing 有权
    相位检测

    公开(公告)号:US08537345B2

    公开(公告)日:2013-09-17

    申请号:US13499076

    申请日:2010-09-24

    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。