公开(公告)号：US08436309B2

公开(公告)日：2013-05-07

申请号：US11764658

申请日：2007-06-18

申请人： John Lievois ,  David Atkinson

发明人： John Lievois ,  David Atkinson

IPC分类号： G01J5/02 ,  G01V5/08

CPC分类号： G01F1/661 ,  G01F1/74 ,  G01N21/314 ,  G01N21/3554 ,  G01N21/3559

摘要： Methods and apparatus for measuring a phase fraction of a flow stream are disclosed. An infrared phase fraction meter includes a light source for emitting into a flow stream infrared radiation that includes first and second wavelength bands. The first wavelength band substantially transmits through first and second phases of the flow stream and is substantially absorbed by a third phase. In contrast, the second wavelength band is substantially absorbed by the second phase relative to the first and third phases. One or more detectors simultaneously detect attenuation of the first and second wavelength bands upon the infrared radiation passing through at least a portion of the flow stream, and a phase fraction of the second phase is determined based on the attenuation. As an example, the first, second and third phases are gas, water and oil, respectively, produced from a well.

公开(公告)号：US20080135761A1

公开(公告)日：2008-06-12

申请号：US11764658

申请日：2007-06-18

申请人： John Lievois ,  David Atkinson

发明人： John Lievois ,  David Atkinson

IPC分类号： G01J5/02

CPC分类号： G01F1/661 ,  G01F1/74 ,  G01N21/314 ,  G01N21/3554 ,  G01N21/3559

摘要： Methods and apparatus for measuring a phase fraction of a flow stream are disclosed. An infrared phase fraction meter includes a light source for emitting into a flow stream infrared radiation that includes first and second wavelength bands. The first wavelength band substantially transmits through first and second phases of the flow stream and is substantially absorbed by a third phase. In contrast, the second wavelength band is substantially absorbed by the second phase relative to the first and third phases. One or more detectors simultaneously detect attenuation of the first and second wavelength bands upon the infrared radiation passing through at least a portion of the flow stream, and a phase fraction of the second phase is determined based on the attenuation. As an example, the first, second and third phases are gas, water and oil, respectively, produced from a well.

摘要翻译： 公开了用于测量流动相的相分数的方法和装置。 红外相位分数表包括用于发射成包括第一和第二波长带的流量红外辐射的光源。 第一波长带基本上透过流动流的第一相和第二相，并且基本上被第三相吸收。 相比之下，相对于第一和第三相，第二波段基本上被第二相吸收。 一个或多个检测器在红外辐射通过流动流的至少一部分时同时检测第一和第二波长带的衰减，并且基于衰减确定第二相的相位分数。 作为示例，第一，第二和第三阶段分别是由井产生的气体，水和油。

公开(公告)号：US07233001B2

公开(公告)日：2007-06-19

申请号：US11065489

申请日：2005-02-24

申请人： John Lievois ,  David Atkinson

发明人： John Lievois ,  David Atkinson

IPC分类号： G01J5/02 ,  G01V5/08

CPC分类号： G01F1/661 ,  G01F1/74 ,  G01N21/314 ,  G01N21/3554 ,  G01N21/3559

摘要： Methods and apparatus for measuring a phase fraction of a flow stream are disclosed. An infrared phase fraction meter includes a light source for emitting into a flow stream infrared radiation that includes first and second wavelength bands. The first wavelength band substantially transmits through first and second phases of the flow stream and is substantially absorbed by a third phase. In contrast, the second wavelength band is substantially absorbed by the second phase relative to the first and third phases. One or more detectors simultaneously detect attenuation of the first and second wavelength bands upon the infrared radiation passing through at least a portion of the flow stream, and a phase fraction of the second phase is determined based on the attenuation. As an example, the first, second and third phases are gas, water and oil, respectively, produced from a well.

摘要翻译： 公开了用于测量流动相的相分数的方法和装置。 红外相位分数表包括用于发射成包括第一和第二波长带的流量红外辐射的光源。 第一波长带基本上透过流动流的第一相和第二相，并且基本上被第三相吸收。 相比之下，相对于第一和第三相，第二波段基本上被第二相吸收。 一个或多个检测器在红外辐射通过流动流的至少一部分时同时检测第一和第二波长带的衰减，并且基于衰减确定第二相的相位分数。 作为示例，第一，第二和第三阶段分别是由井产生的气体，水和油。

公开(公告)号：US20060186340A1

公开(公告)日：2006-08-24

申请号：US11065489

申请日：2005-02-24

申请人： John Lievois ,  David Atkinson

发明人： John Lievois ,  David Atkinson

IPC分类号： G01N21/35

CPC分类号： G01F1/661 ,  G01F1/74 ,  G01N21/314 ,  G01N21/3554 ,  G01N21/3559

摘要： Methods and apparatus for measuring a phase fraction of a flow stream are disclosed. An infrared phase fraction meter includes a light source for emitting into a flow stream infrared radiation that includes first and second wavelength bands. The first wavelength band substantially transmits through first and second phases of the flow stream and is substantially absorbed by a third phase. In contrast, the second wavelength band is substantially absorbed by the second phase relative to the first and third phases. One or more detectors simultaneously detect attenuation of the first and second wavelength bands upon the infrared radiation passing through at least a portion of the flow stream, and a phase fraction of the second phase is determined based on the attenuation. As an example, the first, second and third phases are gas, water and oil, respectively, produced from a well.

公开(公告)号：US20100202687A1

公开(公告)日：2010-08-12

申请号：US12598552

申请日：2008-05-02

申请人： Andrew Melbourne ,  David Atkinson

发明人： Andrew Melbourne ,  David Atkinson

IPC分类号： G06K9/34

CPC分类号： G06T7/20 ,  G06T7/35 ,  G06T2207/10096

摘要： The present invention provides a method of registering image data for a series of images acquired over a period of time. The images may be acquired from a medical imaging device, such as an MRI scanner. The method allows image-by-image registration to a partially compressed dataset in which motion artefacts are suppressed in a series of target images generated to resemble the original dynamic data. The registration process is refined with each iteration of the process. The method uses Principal Component Analysis which allows accurate registration to be performed without the need to make any assumptions about pharmacokinetic model parameters, which not only avoids the problems of accurate model-fitting but permits the use of much larger target areas of the dataset.

摘要翻译： 本发明提供一种用于记录在一段时间内获取的一系列图像的图像数据的方法。 可以从诸如MRI扫描仪的医学成像装置获取图像。 该方法允许逐个映像注册到部分压缩的数据集中，其中在一系列目标图像中抑制运动伪像，以类似于原始动态数据。 注册过程随着流程的每次迭代而得到改进。 该方法使用主成分分析，可以进行准确的注册，而无需对药代动力学模型参数做出任何假设，这不仅避免了准确模型拟合的问题，而且允许使用数据集更大的目标区域。

公开(公告)号：US20060144375A1

公开(公告)日：2006-07-06

申请号：US11030471

申请日：2005-01-06

申请人： David Atkinson ,  Yung Bui ,  Michael Evancik ,  Paul Gamble

发明人： David Atkinson ,  Yung Bui ,  Michael Evancik ,  Paul Gamble

IPC分类号： F02B47/08

CPC分类号： F02D9/101 ,  F02B47/08 ,  F02D2009/0276 ,  F02M26/21 ,  F02M26/51 ,  F02M26/70 ,  F02M35/10222 ,  F02M35/10255

摘要： A method and apparatus for controlling the ratio of ambient air to recirculated gases in an internal combustion engine, wherein an gas injector includes a intake air conduit defining a ambient air flow path, an actuator connected to the intake air conduit, a recirculated gas conduit operatively coupled and disposed within the intake air conduit defining a recirculated gas flow path and a valve apparatus operatively coupled to the intake air conduit and recirculated gas conduit. The valve apparatus includes; a shaft, a throttle valve coupled to the shaft and in fluid communication with the ambient air flow and a recirculated gas valve coupled to the shaft in fluid communication with the recirculated gas flow. The shaft rotates one of the throttle valve and the recirculated gas valve independent of the rotation of the other one of throttle valve and said recirculated gas valve.

摘要翻译： 一种用于控制内燃机中的环境空气与再循环气体的比率的方法和装置，其中气体喷射器包括限定环境空气流动路径的进气管道，连接到进气管道的致动器，可操作地连接到再循环气体导管 联接并设置在进气管道内，限定再循环气体流路和可操作地连接到进气管道和再循环气体管道的阀装置。 阀装置包括： 轴，节流阀，其联接到所述轴并且与所述环境空气流流体连通;以及再循环的气阀，其与所述轴连通，所述再循环气阀与所述再循环气流流体连通。 独立于另一个节流阀和所述再循环气体阀的旋转，轴旋转节气门和循环气体阀中的一个。

公开(公告)号：US06476949B1

公开(公告)日：2002-11-05

申请号：US09125649

申请日：1999-04-07

申请人： Wei-Hung Loh ,  Richard Ian Laming ,  David Atkinson ,  John James O'Reilly

发明人： Wei-Hung Loh ,  Richard Ian Laming ,  David Atkinson ,  John James O'Reilly

IPC分类号： H04B1000

CPC分类号： G02B6/2932 ,  G02B6/29394 ,  H04B10/2519 ,  H04B2210/254

摘要： An optical transmission apparatus for transmission of optical signals at an optical wavelength of about 1550 nanometers. The optical transmission apparatus includes a single mode optical fiber link formed of optical fiber having substantially zero dispersion at an optical wavelength of about 1300 nanometers and a dispersion of about 17 picoseconds per nanometer-kilometer at an optical wavelength of about 1500 nanometers. Further, at least one dispersion compensating chirped optical fiber grating is coupled to the optical fiber link, the aggregate dispersion of the at least one dispersion compensating chirped optical fiber grating substantially compensating for the dispersion of the optical fiber link. Further, the at least one dispersion compensating chirped optical fiber grating is coupled at respective positions substantially symmetrically disposed about the longitudinal center of the optical fiber link.

摘要翻译： 一种光传输装置，用于在大约1550纳米的光波长下传输光信号。 光传输装置包括由光纤形成的单模光纤链路，光纤在大约1300纳米的光波长下具有基本上为零的色散，并且在约1500纳米的光波长下具有约17皮秒/纳米公里的分散。 此外，至少一个色散补偿啁啾光纤光栅耦合到光纤链路，所述至少一个色散补偿啁啾光纤光栅的聚集色散基本上补偿了光纤链路的色散。 此外，至少一个色散补偿啁啾光纤光栅在大致对称地围绕光纤链路的纵向中心设置的位置处耦合。

公开(公告)号：US08391643B2

公开(公告)日：2013-03-05

申请号：US12598552

申请日：2008-05-02

申请人： Andrew Melbourne ,  David Atkinson

发明人： Andrew Melbourne ,  David Atkinson

IPC分类号： G06K9/32

CPC分类号： G06T7/20 ,  G06T7/35 ,  G06T2207/10096

摘要： The present invention provides a method of registering image data for a series of images acquired over a period of time. The images may be acquired from a medical imaging device, such as an MRI scanner. The method allows image-by-image registration to a partially compressed dataset in which motion artifacts are suppressed in a series of target images generated to resemble the original dynamic data. The registration process is refined with each iteration of the process. The method uses Principal Component Analysis which allows accurate registration to be performed without the need to make any assumptions about pharmacokinetic model parameters, which not only avoids the problems of accurate model-fitting but permits the use of much larger target areas of the dataset.

摘要翻译： 本发明提供一种用于记录在一段时间内获取的一系列图像的图像数据的方法。 可以从诸如MRI扫描仪的医学成像装置获取图像。 该方法允许逐个映像注册到部分压缩的数据集中，其中在生成的类似于原始动态数据的一系列目标图像中抑制运动伪像。 注册过程随着流程的每次迭代而得到改进。 该方法使用主成分分析，可以进行准确的注册，而无需对药代动力学模型参数做出任何假设，这不仅避免了准确模型拟合的问题，而且允许使用数据集更大的目标区域。

公开(公告)号：US20130000298A1

公开(公告)日：2013-01-03

申请号：US13172504

申请日：2011-06-29

申请人： Amanda Heisel ,  David Atkinson ,  Brien Johnston

发明人： Amanda Heisel ,  David Atkinson ,  Brien Johnston

IPC分类号： F02D23/00 ,  F02B33/44

CPC分类号： F16K27/0218 ,  F02M26/50 ,  F02M26/70 ,  F16K1/226

摘要： An exhaust gas recirculation valve is configured as a butterfly valve and includes a body with a generally uniform diameter bore therethrough. A generally circular plate is mounted within the bore and is rotatable between a first open position and a second closed position. The generally circular plate is dimensioned to provide a enlarged gap between an outer edge of the generally circular plate and the bore when at the second closed position.

摘要翻译： 排气再循环阀被构造为蝶阀，并且包括具有穿过其中的大致均匀直径的孔的主体。 大致圆形板安装在孔内并且可在第一打开位置和第二关闭位置之间旋转。 通常圆形板的尺寸被设计成当处于第二关闭位置时在大致圆形板的外边缘和孔之间提供扩大的间隙。

公开(公告)号：US07308125B2

公开(公告)日：2007-12-11

申请号：US10475445

申请日：2002-04-18

申请人： David Atkinson

发明人： David Atkinson

IPC分类号： G06K9/00

CPC分类号： G01R33/56509

摘要： A method and apparatus for reducing the effects of motion of a subject during image acquisition is presented. The method is particularly suitable for correcting the motion during magnetic resonance imaging. The method involves comparing an image with a reference image in the spatial frequency domain to determine the extent of any rotational and/or translational motion and then apply an appropriate correction. Any motion is modeled by comparison with the reference image but the corrected image is produced using information from the corrupted image alone.

摘要翻译： 提出了一种用于在图像采集期间减少被摄体运动的影响的方法和装置。 该方法特别适用于校正磁共振成像期间的运动。 该方法涉及将图像与空间频域中的参考图像进行比较，以确定任何旋转和/或平移运动的程度，然后应用适当的校正。 通过与参考图像进行比较来建模任何运动，但是使用仅来自损坏图像的信息产生校正图像。