公开(公告)号：US20120081107A1

公开(公告)日：2012-04-05

申请号：US12895099

申请日：2010-09-30

申请人： John Kenneth Fitch

发明人： John Kenneth Fitch

IPC分类号： G01B7/14

CPC分类号： G01B7/023

摘要： Systems and/or methods are provided for cancelling stray magnetic fields escaping out the back or sides of an inductive proximity sensor. The inductive proximity sensor includes a coil assembly with a sensing coil. The sensing coil detects magnetic flux escaping out the sides and/or back of the sensor. An active circuit couples to the sensing coil. The active circuit generates a canceling current based upon a current and/or electromotive force in the sensing coil due to the flux. The cancelling current drives a driven coil to generate a magnetic field which can reduce total flux through the sensing coil to zero.

摘要翻译： 提供了系统和/或方法来抵消从电感式接近传感器的背面或侧面逸出的杂散磁场。 感应式接近传感器包括具有感测线圈的线圈组件。 感测线圈检测从传感器的侧面和/或背面逸出的磁通量。 有源电路耦合到感测线圈。 有源电路由于通量而基于感测线圈中的电流和/或电动势产生抵消电流。 取消电流驱动从动线圈产生磁场，其可以将通过感测线圈的总磁通减少到零。

公开(公告)号：US08432157B2

公开(公告)日：2013-04-30

申请号：US12895099

申请日：2010-09-30

申请人： John Kenneth Fitch

发明人： John Kenneth Fitch

IPC分类号： G01B7/14

CPC分类号： G01B7/023

摘要： Systems and/or methods are provided for cancelling stray magnetic fields escaping out the back or sides of an inductive proximity sensor. The inductive proximity sensor includes a coil assembly with a sensing coil. The sensing coil detects magnetic flux escaping out the sides and/or back of the sensor. An active circuit couples to the sensing coil. The active circuit generates a canceling current based upon a current and/or electromotive force in the sensing coil due to the flux. The cancelling current drives a driven coil to generate a magnetic field which can reduce total flux through the sensing coil to zero.

摘要翻译： 提供了系统和/或方法来抵消从电感式接近传感器的背面或侧面逸出的杂散磁场。 感应式接近传感器包括具有感测线圈的线圈组件。 感测线圈检测从传感器的侧面和/或背面逸出的磁通量。 有源电路耦合到感测线圈。 有源电路由于通量而基于感测线圈中的电流和/或电动势产生抵消电流。 取消电流驱动从动线圈产生磁场，其可以将通过感测线圈的总磁通减少到零。

公开(公告)号：US06870475B2

公开(公告)日：2005-03-22

申请号：US10279958

申请日：2002-10-24

申请人： John Kenneth Fitch ,  Clifford Mark Kelly

发明人： John Kenneth Fitch ,  Clifford Mark Kelly

IPC分类号： H02J7/00 ,  H02J7/02 ,  H02J13/00 ,  H04B1/38 ,  G08B1/08

CPC分类号： H02J7/0027 ,  H02J7/0021 ,  H02J7/025 ,  H02J13/0075 ,  H02J13/0086 ,  H02J13/0096 ,  H02J50/10 ,  H02J50/40 ,  H02J50/70 ,  H04B1/3883 ,  Y02B70/3216 ,  Y04S20/221

摘要： An electrically isolated combined power and signal coupler is usable for a portable medical monitoring device attachable to a patient in a medical environment. A power coupling system transfers power between a power source and a powered device separated by a physical and electrical isolation barrier. The system comprises a power coupler including in a first device, a first section of a magnetic circuit including a first core section of magnetically permeable material of cross-sectional area substantially larger at an isolation barrier interface than within a first winding located on the first core section. The first section of magnetic circuit being suitable, in a docking mode, for positioning adjacent to a second section of magnetic circuit in a second device to form a completed magnetic circuit used to transfer power between said first and second device. The second section of magnetic circuit including a second core section with a second winding magnetically coupling with the first winding via the completed magnetic circuit in the docking mode for the power transfer. The first core section comprises at least one substantially planar core section at the isolation barrier interface for positioning adjacent to a corresponding substantially planar core section of said second section of magnetic circuit at the isolation barrier interface to form the completed magnetic circuit without a device containing the second section of magnetic circuit enveloping a significant portion of the substantially planar core section.

摘要翻译： 电隔离的组合电力和信号耦合器可用于在医疗环境中可附接到患者的便携式医疗监测装置。 电力耦合系统在电源和由物理和电隔离屏障隔开的有源设备之间传输功率。 该系统包括功率耦合器，该功率耦合器包括在第一装置中的磁路的第一部分，该第一部分包括在隔离屏障界面处大于在位于第一芯部上的第一绕组内的横截面面积的导磁材料的第一芯部分 部分。 磁路的第一部分在对接模式下适合于在第二装置中邻近磁路的第二部分定位，以形成用于在所述第一和第二装置之间传递动力的完整磁路。 磁路的第二部分包括具有第二磁芯部分的第二磁芯部分，第二磁芯部分具有第二绕组，该第二绕组以对接模式通过完整的磁路与第一绕组磁耦合用于电力传输。 第一芯部分包括在隔离屏障界面处的至少一个基本上平面的芯部分，用于在隔离屏障界面处邻近于所述磁路的第二部分的对应的基本上平坦的芯部分定位，以形成完整的磁路，而不需要包含 磁路的第二部分包围基本平坦的芯部分的重要部分。