公开(公告)号：US6100680A

公开(公告)日：2000-08-08

申请号：US851402

申请日：1997-05-05

申请人： Ravi Vig ,  Jay M. Towne ,  P. Karl Scheller

发明人： Ravi Vig ,  Jay M. Towne ,  P. Karl Scheller

IPC分类号： G01B7/00 ,  G01D3/02 ,  G01D5/14 ,  G01D5/244 ,  G01D5/245 ,  G01V3/08 ,  H03K17/95 ,  H03M1/30 ,  G01P3/488 ,  G01P3/489 ,  H03K5/08 ,  H03K5/153

CPC分类号： G01D3/02 ,  G01D5/145 ,  G01D5/2448 ,  H03M1/303

摘要： A magnetic-field-to-voltage transducer includes a Hall element and a digitally gain-controlled Hall-voltage amplifier that produces an analog signal voltage Vsig having excursions of one polarity corresponding to the passing of magnetic articles. The gain of an AGC Vsig amplifier is only decreased in small sequential gain increments during an initial interval defined as that in which two excursions in Vsig have occurred, and the gain remains unchanged thereafter. Vsig is applied to the input of a peak-referenced-threshold signal detector that generates a binary output voltage, Vout, having transitions of one direction and the other direction corresponding respectively to the approach and retreat of the passing articles. The peak-referenced-threshold signal detector includes a dual-threshold-voltage comparator which is set to a large threshold at start-up. When just after start-up an excursion in the signal Vsig at the output of the amplifier exceeds a predetermined reference voltage, a small threshold obtains. Such an automatic threshold adjustment is made only in a brief initial period following start-up and not again until the proximity detector has been powered down and then started up again. This automatic dual-mode threshold feature prevents false detection due to "overshoots" that may be present in the transducer signal when the air gap is small, and leads to accurate detection over a wide range of air gaps between the transducer and the passing magnetic articles.

摘要翻译： 磁场电压换能器包括霍尔元件和数字增益控制的霍尔电压放大器，其产生具有对应于磁性物品通过的一个极性的偏移的模拟信号电压Vsig。 AGC Vsig放大器的增益仅在定义为其中发生Vsig中的两个偏移的初始间隔期间以小的顺序增益增量减小，并且其后的增益保持不变。 Vsig被施加到产生二进制输出电压Vout的峰值参考阈值信号检测器的输入端，Vout分别具有一个方向的转变，另一个方向分别对应于通过的物品的进入和退出。 峰值参考阈值信号检测器包括在启动时被设置为大阈值的双阈值电压比较器。 当刚刚启动之后，放大器输出端的信号Vsig的偏移超过了预定的参考电压，得到一个小的阈值。 这样的自动阈值调整仅在启动之后的初始初始周期中进行，而不是再次直到接近检测器被断电然后再次启动。 这种自动双模阈值特征防止了当气隙小时可能存在于换能器信号中的“过冲”的错误检测，并且导致在换能器和通过的磁性物品之间的宽范围的气隙的精确检测 。

公开(公告)号：US20130093416A1

公开(公告)日：2013-04-18

申请号：US13705423

申请日：2012-12-05

申请人： David J. Haas ,  Ravi Vig

发明人： David J. Haas ,  Ravi Vig

IPC分类号： G01R33/02

CPC分类号： G01R33/02 ,  G01R33/0029 ,  G01R33/0041 ,  G01R33/072

摘要： A magnetic field sensor and a method associated with the magnetic field sensor provide gain correction coefficients and/or offset correction coefficients stored in the magnetic field sensor in digital form. The gain correction coefficients and/or offset correction coefficients can be used to generate analog control signals to control a sensitivity and/or an offset of an analog signal path through the magnetic field sensor.

摘要翻译： 磁场传感器和与磁场传感器相关联的方法以数字形式提供存储在磁场传感器中的增益校正系数和/或偏移校正系数。 增益校正系数和/或偏移校正系数可用于产生模拟控制信号以控制通过磁场传感器的模拟信号路径的灵敏度和/或偏移。

公开(公告)号：US20070247146A1

公开(公告)日：2007-10-25

申请号：US11767631

申请日：2007-06-25

申请人： Jason Stauth ,  Richard Dickinson ,  Glenn Forrest ,  Ravi Vig

发明人： Jason Stauth ,  Richard Dickinson ,  Glenn Forrest ,  Ravi Vig

IPC分类号： G01R33/00

CPC分类号： G01R15/205 ,  G01R15/207 ,  G01R33/09 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/4903 ,  H01L2924/00014

摘要： An electronic circuit includes a first substrate having a first substrate surface and a device supported by the first substrate surface. The device is selected from among a passive electronic component and an active electronic component. The electronic circuit also includes a second substrate having a second substrate surface and a conductor proximate to the second substrate. The electronic circuit also includes a magnetic field transducer disposed over the conductor and coupled to the device and an insulating layer disposed between the conductor and the second substrate. The conductor is adapted to carry an electrical current to generate a first magnetic field. The electronic circuit is responsive to the first magnetic field. In some embodiments, the conductor is a secondary conductor and the circuit further includes a primary conductor disposed proximate to the magnetic field transducer and an insulating layer disposed between the primary conductor and the second substrate.

摘要翻译： 电子电路包括具有第一衬底表面的第一衬底和由第一衬底表面支撑的器件。 从无源电子部件和有源电子部件中选择该装置。 电子电路还包括具有第二衬底表面和靠近第二衬底的导体的第二衬底。 电子电路还包括设置在导体上并耦合到器件的磁场换能器，以及设置在导体和第二衬底之间的绝缘层。 导体适于承载电流以产生第一磁场。 电子电路响应于第一磁场。 在一些实施例中，导体是次级导体，并且电路还包括邻近磁场换能器设置的主导体和设置在主导体和第二衬底之间的绝缘层。

公开(公告)号：US07259545B2

公开(公告)日：2007-08-21

申请号：US10364442

申请日：2003-02-11

申请人： Jason Stauth ,  Richard Dickinson ,  Glenn Forrest ,  Ravi Vig

发明人： Jason Stauth ,  Richard Dickinson ,  Glenn Forrest ,  Ravi Vig

IPC分类号： G01R15/20

CPC分类号： G01R15/205 ,  G01R15/207 ,  G01R33/09 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/4903 ,  H01L2924/00014

摘要： An integrated sensor includes a magnetoresistance element electrically coupled to a device disposed on or integrated in a silicon substrate. A conductor is provided proximate to the magnetoresistance element. The integrated sensor can be used to provide various devices, such as a current sensor, a magnetic field sensor, or an isolator. Further, the integrated sensor can be used in an open loop configuration or in a closed loop configuration in which an additional conductor is provided. The magntoresistance element may be formed over the silicon substrate or on a separate, non-silicon substrate. Also described is an integrated sensor comprising a substrate, a magnetic field transducer disposed over a surface of the substrate, and a conductor disposed over the surface of the substrate proximate to the magnetic field transducer. The magnetic field transducer can be a Hall effect transducer or a magnetoresistance element.

摘要翻译： 集成传感器包括电耦合到设置在硅衬底上或集成在硅衬底中的器件的磁阻元件。 导体靠近磁阻元件设置。 集成传感器可用于提供各种设备，例如电流传感器，磁场传感器或隔离器。 此外，集成传感器可以以开环配置或闭环配置使用，其中提供附加导体。 可以在硅衬底上或在单独的非硅衬底上形成磁阻电阻元件。 还描述了一种集成传感器，其包括衬底，设置在衬底的表面上的磁场换能器，以及设置在靠近磁场换能器的衬底表面上的导体。 磁场传感器可以是霍尔效应传感器或磁阻元件。

公开(公告)号：US20060103377A1

公开(公告)日：2006-05-18

申请号：US10989433

申请日：2004-11-17

申请人： Takashi Hara ,  Kazuhiro Kamiya ,  Kenichi Taguchi ,  Toshiyuki Matsuo ,  Takayoshi Tsuzuki ,  Glenn Forrest ,  Karl Scheller ,  Ravi Vig

发明人： Takashi Hara ,  Kazuhiro Kamiya ,  Kenichi Taguchi ,  Toshiyuki Matsuo ,  Takayoshi Tsuzuki ,  Glenn Forrest ,  Karl Scheller ,  Ravi Vig

IPC分类号： G01B7/30

CPC分类号： G01D5/147 ,  G01D5/24452 ,  G01D5/2448 ,  G01D5/2449

摘要： Disclosed is a rotation detecting sensor suitable for use under a vibration-abundant condition as e.g. a sensor disposed in an automobile body for detecting rotation of an engine or ABS. The sensor includes a detecting element for detecting rotation of a rotary body as a change in a magnetic flux and outputting a signal and an integrated circuit for processing the amplified signal into a pulse corresponding to the detected rotation of the rotary body. The signal processing includes an initialization such as a gain adjustment for obtaining an appropriate gain for use in the subsequent process of conversion of the amplified signal to the pulse. According to this invention, a re-initialization is effected to obtain a new initial value such as a new gain if the previously effected initialization is determined inappropriate.

摘要翻译： 公开了一种旋转检测传感器，适用于振动充足的条件下使用。 设置在汽车主体中用于检测发动机或ABS的旋转的传感器。 传感器包括用于检测旋转体的旋转的检测元件作为磁通量的变化，并且输出信号和用于将放大的信号处理为与所检测到的旋转体的旋转相对应的脉冲的集成电路。 信号处理包括诸如增益调整的初始化，用于获得用于将放大信号转换为脉冲的后续处理中使用的适当增益。 根据本发明，如果先前影响的初始化被确定为不适当，则进行重新初始化以获得新的初始值，例如新的增益。

公开(公告)号：US06356741B1

公开(公告)日：2002-03-12

申请号：US09338668

申请日：1999-06-22

申请人： Alberto Bilotti ,  Glenn A. Forrest ,  Ravi Vig

发明人： Alberto Bilotti ,  Glenn A. Forrest ,  Ravi Vig

IPC分类号： H04B138

CPC分类号： H03K17/97 ,  H03K17/9517 ,  Y10T307/766

摘要： A switch which is magnetic pole insensitive is described. The switch includes a Hall effect sensor coupled to a threshold circuit which provides an output signal indicative of the proximity of a magnet, and hence a magnetic field, to the Hall effect sensor regardless of the orientation of the magnet to the Hall effect sensor.

摘要翻译： 描述了磁极不敏感的开关。 该开关包括耦合到阈值电路的霍尔效应传感器，其向霍尔效应传感器提供指示磁体接近的输出信号，并因此提供磁场，而不管磁体与霍尔效应传感器的取向如何。

公开(公告)号：US5781005A

公开(公告)日：1998-07-14

申请号：US485697

申请日：1995-06-07

申请人： Ravi Vig ,  Teri L. Tu

发明人： Ravi Vig ,  Teri L. Tu

IPC分类号： G01P3/488 ,  G01D5/14 ,  G01D5/245 ,  G01R33/07 ,  G01V3/08 ,  H01H36/00 ,  H01L27/22 ,  H01L43/06 ,  G01P3/48 ,  G01B7/14 ,  G01P3/54

CPC分类号： G01V3/08 ,  G01D5/147 ,  G01R33/07

摘要： A Hall-effect sensor is presented which is adapted to sense a ferromagnetic object, including an integrated circuit chip having a planar Hall element which is positioned in, parallel to, and defines a sensor plane having a front side and a back side, and which element is normal to and centered on a sensor axis, and a magnet structure having an N pole and an S pole, the magnet structure being positioned behind the sensor plane and positioned so that an S pole and an N pole are adjacent each other and both are adjacent the element.

摘要翻译： 本发明提出了一种霍尔效应传感器，其适用于检测铁磁性物体，包括集成电路芯片，该集成电路芯片具有平面霍尔元件，该平面霍尔元件位于并平行并限定了具有前侧和后侧的传感器平面， 元件以传感器轴线为中心，以及具有N极和S极的磁体结构，磁体结构位于传感器平面的后面并且定位成使得S极和N极彼此相邻并且两者都相邻 与元素相邻。

公开(公告)号：US5581179A

公开(公告)日：1996-12-03

申请号：US454916

申请日：1995-05-31

申请人： Raymond W. Engel ,  Peter J. Gilbert ,  Ravi Vig ,  Teri Tu ,  Terry Clapp

发明人： Raymond W. Engel ,  Peter J. Gilbert ,  Ravi Vig ,  Teri Tu ,  Terry Clapp

IPC分类号： G01P3/488 ,  G01B7/00 ,  G01D5/14 ,  G01D5/245 ,  G01D11/24 ,  G01P3/487 ,  G01P1/02 ,  G01B7/14 ,  G01P3/42 ,  H05K5/00

CPC分类号： G01P3/487 ,  G01D11/245 ,  G01D5/147

摘要： This invention is a magnetic-field sensor assembly comprising a preformed housing shell having a first end which includes an opening, and a second end which includes a window and having a cylindrical shape with a flattened portion to produce a truncated circular cross-section, a sensor package including an integrated-circuit magnetic-field-sensor chip encapsulated in a protective body with first and second opposite and mutually parallel faces and a plurality of integral conductive leads, each lead having a proximal portion, a distal portion, and a central portion, the proximal portion of each of said plurality of leads extending from said body, the central portion of said plurality of leads extending away from the body and positioned substantially normal the faces of the body, said sensor-package body being positioned in said housing shell part way through said window with said one body face extending outwardly from said housing shell and with said lead distal portions extending from said housing shell through said opening, a magnet having a first end and a second end and positioned in said housing shell with said first end adjacent to said second sensor-package body face, and an endcap adapted to close said opening in said housing shell.

摘要翻译： 本发明是一种磁场传感器组件，其包括具有包括开口的第一端的预成型壳体壳体，以及包括窗口并且具有扁平部分的圆柱形形状以产生截面圆形横截面的第二端， 传感器封装，其包括封装在具有第一和第二相对且相互平行的面的保护体中的集成电路磁场传感器芯片，以及多个整体式导电引线，每个引线具有近端部分，远端部分和中心部分 所述多个引线中的每一个的近端部分从所述主体延伸，所述多个引线的中心部分远离主体延伸并且基本上垂直于主体的表面定位，所述传感器封装主体位于所述壳体壳体中 部分通过所述窗口，所述一个主体面从所述壳体外壳向外延伸，并且所述引线远端部分从s延伸 通过所述开口帮助壳体壳体，具有第一端和第二端并且定位在所述壳体壳体中的所述第一端部与所述第二传感器封装主体面相邻的磁体，以及用于封闭所述壳体壳体中的所述开口的端盖。

公开(公告)号：US08384183B2

公开(公告)日：2013-02-26

申请号：US12708855

申请日：2010-02-19

申请人： Harianto Wong ,  William P. Taylor ,  Ravi Vig

发明人： Harianto Wong ,  William P. Taylor ,  Ravi Vig

IPC分类号： H01L21/00

CPC分类号： H01L43/065

摘要： An integrated circuit and a method of making the integrated circuit provide a Hall effect element having a germanium Hall plate. The germanium Hall plate provides an increased electron mobility compared with silicon, and therefore, a more sensitive Hall effect element.

摘要翻译： 集成电路和制造集成电路的方法提供具有锗霍尔板的霍尔效应元件。 与硅相比，锗霍尔板提供了增加的电子迁移率，因此是更敏感的霍尔效应元件。

公开(公告)号：US20120249126A1

公开(公告)日：2012-10-04

申请号：US13077127

申请日：2011-03-31

申请人： Andreas P. Friedrich ,  Andrea Foletto ,  Ravi Vig

发明人： Andreas P. Friedrich ,  Andrea Foletto ,  Ravi Vig

IPC分类号： G01R33/02

CPC分类号： G01D5/2448 ,  G01D5/145 ,  G01D5/2449

摘要： A circuit for detecting object movement includes one or more predetermined threshold detectors, one or more tracking threshold detectors, and an output selector to generate an output signal related to at least one of an output of a predetermined threshold detector or an output of a tracking threshold detector based on a predetermined condition. A method of detecting object movement includes generating: a magnetic field signal proportional to a magnetic field associated with the object, a tracking signal to track peaks of the magnetic field signal, a predetermined threshold output signal responsive to the magnetic field signal and to a predetermined threshold, and a tracking threshold output signal responsive to the magnetic field signal and to the tracking signal, and providing an output signal related to a selected one of the predetermined threshold output signal or the tracking threshold output signal based upon a predetermined condition.

摘要翻译： 用于检测物体移动的电路包括一个或多个预定阈值检测器，一个或多个跟踪阈值检测器，以及输出选择器，用于产生与预定阈值检测器的输出或跟踪阈值的输出中的至少一个有关的输出信号 检测器基于预定条件。 一种检测物体运动的方法包括：产生与磁场相关的磁场成比例的磁场信号，跟踪信号以跟踪磁场信号的峰值，响应于磁场信号的预定阈值输出信号和预定的 阈值和响应于磁场信号和跟踪信号的跟踪阈值输出信号，以及基于预定条件提供与所选择的预定阈值输出信号或跟踪阈值输出信号中的所选择的输出信号相关的输出信号。