公开(公告)号：US07129701B2

公开(公告)日：2006-10-31

申请号：US10991709

申请日：2004-11-18

申请人： Robert D. LaClair

发明人： Robert D. LaClair

IPC分类号： G01B7/14

CPC分类号： H03K17/9505 ,  G01B7/023 ,  H03K2217/94021

摘要： A method of non-intrusive, inductive proximity sensing of a target through a conductive barrier comprises the steps of: disposing an inductive proximity sensor on one side of a barrier of conductive material; disposing a target on the other side of the barrier; determining an appropriate drive frequency for operating the proximity sensor based on the conductive material and thickness of the barrier; and operating the proximity sensor with the appropriate drive frequency to non-intrusively sense the proximity of the target through the conductive barrier. The method may include the steps of: varying the gap between the target and proximity sensor over a gap range; measuring the inductive output of the proximity sensor at the appropriate drive frequency and different gaps to obtain inductive output measurements at the different gaps; determining the operating induction bandwidth of the proximity sensor operated at approximately the appropriate drive frequency from the inductive output measurements at the different gaps; and using the determined induction bandwidth for proximity sensing of the target through the conductive barrier. The gap range may be based on a sensor/target gap variation during actuation for a particular application.

摘要翻译： 通过导电屏障对目标进行非侵入式电感接近感测的方法包括以下步骤：在电导材料阻挡层的一侧上设置电感式接近传感器; 在屏障的另一侧放置目标; 基于所述导电材料和所述屏障的厚度来确定用于操作所述接近传感器的适当的驱动频率; 并以适当的驱动频率操作接近传感器以非侵入性地感测目标通过导电屏障的接近度。 该方法可以包括以下步骤：在间隙范围内改变目标和接近传感器之间的间隙; 以适当的驱动频率和不同的间隙测量接近传感器的感应输出，以在不同间隙处获得感应输出测量; 确定接近传感器的操作感应带宽在大约适当的驱动频率下从不同间隙处的感应输出测量值操作; 并且通过导电屏障使用确定的感应带宽来进行目标的接近感测。 间隙范围可以基于针对特定应用的致动期间的传感器/目标间隙变化。

公开(公告)号：US5880480A

公开(公告)日：1999-03-09

申请号：US816918

申请日：1997-03-13

申请人： Sylvester M. Ellinger ,  Ralph E. Burt ,  Jerre G. Longfellow ,  Robert D. LaClair

发明人： Sylvester M. Ellinger ,  Ralph E. Burt ,  Jerre G. Longfellow ,  Robert D. LaClair

IPC分类号： G01F23/292 ,  G01F25/00 ,  G01N35/10 ,  G01N15/06

CPC分类号： G01F23/2925 ,  G01F23/2927 ,  G01F25/0076 ,  G01N2035/1025 ,  Y10S250/903

摘要： A liquid sensing apparatus for a fuel tank comprises a first optical sensor for producing an output having a first state that corresponds to the first optical sensor being exposed to air and a second state that corresponds to the first optical sensor being exposed to fuel; and a circuit for detecting the first and second optical sensor output states. The sensor circuit also has self test capability for testing both active and passive components. The sensor circuits can be accessed using a two wire only interface, and thermal stability can be achieved with the electronic circuit as shown.

摘要翻译： 一种用于燃料箱的液体检测装置包括：第一光学传感器，用于产生具有对应于第一光学传感器暴露于空气的第一状态的输出和对应于第一光学传感器暴露于燃料的第二状态; 以及用于检测第一和第二光学传感器输出状态的电路。 传感器电路还具有测试有源和无源组件的自检能力。 传感器电路可以使用双线接口进行访问，如图所示，电子电路可实现热稳定性。

公开(公告)号：US5399876A

公开(公告)日：1995-03-21

申请号：US206296

申请日：1994-03-03

申请人： Robert D. LaClair

发明人： Robert D. LaClair

IPC分类号： G01F23/292 ,  G02B6/04 ,  G02B6/26 ,  G01N21/49 ,  G02B6/02

CPC分类号： G02B6/04 ,  G01F23/2925 ,  G02B6/262 ,  Y10S250/903

摘要： An optical point level sensor for fluids includes a prism exposable to a fluid such that electromagnetic energy is reflected internally the prism dependent on the fluid level; and a lens optically connectable to an electromagnetic energy source and an electromagnetic energy detector such that electromagnetic energy from the source enters the lens at a first location axisymmetric to a second location where electromagnetic energy exits the lens to the detector. In one embodiment the lens is a GRIN lens.

摘要翻译： 用于流体的光点液位传感器包括可暴露于流体的棱镜，使得电磁能量根据流体水平在内部反射棱镜; 以及可光学地连接到电磁能源和电磁能量检测器的透镜，使得来自源的电磁能量在电磁能量离开透镜到检测器的第二位置的第一位置处进入透镜。 在一个实施例中，透镜是GRIN透镜。

公开(公告)号：US07360294B2

公开(公告)日：2008-04-22

申请号：US11620175

申请日：2007-01-05

申请人： Robert D. LaClair ,  David Henry Crowne ,  Christopher Spagnoletti ,  Eric Carter

发明人： Robert D. LaClair ,  David Henry Crowne ,  Christopher Spagnoletti ,  Eric Carter

IPC分类号： G01R3/00

CPC分类号： H03K17/9505 ,  H01F21/06 ,  Y10T29/49002 ,  Y10T29/49007 ,  Y10T29/4902 ,  Y10T29/49073

摘要： A method of assembling an inductive proximity sensor maintains inductive coil wound bobbins in fixed relation to an inductive core within a housing. The method includes configuring two inductive coil wound bobbins with an integral ledge cantilevered from an inside surface thereof for forming a pocket under the integral ledge at a bottom of each bobbin; disposing each inductive coil wound bobbin around a corresponding leg of the inductive core; containing a foot of each core leg into the pocket of the corresponding bobbin; inserting each of two legs of a thruster element into a corresponding bobbin so that each leg rests upon the ledge of the corresponding bobbin; disposing the inductive core, inductive coil wound bobbins, and thruster element into the housing; disposing a spring element on a top surface of the thruster element; and compressing the spring element against the top surface of the thruster element.

摘要翻译： 组合感应式接近传感器的方法将感应线圈缠绕线轴保持在与壳体内的感应芯固定的关系。 该方法包括将两个感应线圈缠绕线轴从其内表面构成一个悬臂的整体凸缘，以便在每个绕线管底部的一体式凸缘下形成一个凹槽; 将每个感应线圈缠绕的绕线管放置在感应芯的相应腿部周围; 将每个芯腿的脚部插入相应线圈架的口袋中; 将推进器元件的两个腿中的每一个插入相应的筒管中，使得每个腿搁置在相应的筒管的凸缘上; 将感应芯，感应线圈缠绕线轴和推进器元件放置到壳体中; 将弹簧元件设置在推进元件的顶表面上; 并且将弹簧元件压靠在推进元件的顶表面上。