公开(公告)号：US07772529B2

公开(公告)日：2010-08-10

申请号：US11077351

申请日：2005-03-10

申请人： Perry A. Holman

发明人： Perry A. Holman

IPC分类号： H05B6/02 ,  H05B6/10

CPC分类号： G01R33/093 ,  B82Y25/00 ,  H01F1/14708 ,  H01L43/12 ,  Y10T428/12465

摘要： Methods and systems for improving permalloy sensitivity. One or more permalloy sensing components can be configured upon a substrate, and one or more conductors are located above a portion of the permalloy sensing component of interest. A current can then be initiated through the conductor. The substrate can then be heated such that the current creates a magnetic field that modifies the anisotropy of the portion of the permalloy sensing component of interest, thereby providing selective anisotropy and improving permalloy sensitivity thereof.

摘要翻译： 提高坡莫合金敏感性的方法和系统。 一个或多个坡莫合金感测部件可以配置在基板上，并且一个或多个导体位于感兴趣的坡莫合金感测部件的一部分上方。 然后可以通过导体启动电流。 然后可以加热衬底，使得电流产生磁场，其改变感兴趣的坡莫合金感测部件的部分的各向异性，从而提供选择性各向异性并改善其坡莫合金敏感性。

公开(公告)号：US07196875B2

公开(公告)日：2007-03-27

申请号：US10811473

申请日：2004-03-24

申请人： Jason M Chilcote ,  Perry A. Holman

发明人： Jason M Chilcote ,  Perry A. Holman

IPC分类号： G11B5/39 ,  G11B5/33

CPC分类号： H01L43/08

摘要： A permalloy sensor having high sensitivity is presented A substrate and a sensor has a first surface having a wafer level anisotropy in a given direction. A permalloy resistor pattern of individual runners is deposited on the surface such that the mechanical length of each of said individual runners is perpendicular to the wafer level anisotropy to cause the sensor to have an anisotropy of about 90°. The permalloy is deposited as a thin film and a silicon wafer is the preferred substrate.

摘要翻译： 具有高灵敏度的坡莫合金传感器呈现基板和传感器具有在给定方向上具有晶片级各向异性的第一表面。 单个流道的坡莫合金电阻器图案沉积在表面上，使得每个所述单个流道的机械长度垂直于晶片级各向异性，以使传感器具有大约90°的各向异性。 坡莫合金作为薄膜沉积，硅晶片是优选的基板。

公开(公告)号：US06297628B1

公开(公告)日：2001-10-02

申请号：US09270715

申请日：1999-03-17

申请人： Robert E. Bicking ,  Greg R. Furlong ,  Perry A. Holman ,  Ed L. Stern

发明人： Robert E. Bicking ,  Greg R. Furlong ,  Perry A. Holman ,  Ed L. Stern

IPC分类号： G01B714

CPC分类号： G01D5/145

摘要： An interleaved parallel MR bridge array is optimized for sensing fine pitch ring magnets and can be utilized to reduce ring magnet target size for wheel speed sensing applications.

摘要翻译： 交错的并行MR桥阵列被优化用于感测细间距环形磁体，并且可用于减小用于车轮速度感测应用的环形磁铁目标尺寸。

公开(公告)号：US08816679B2

公开(公告)日：2014-08-26

申请号：US13550285

申请日：2012-07-16

申请人： ShanoPrasad Kunjappan ,  Perry A. Holman, Jr. ,  Madhan Raj Bagianathan ,  Dinesh Naik ,  Christopher Kenney ,  Ravi Kasturi Raj

发明人： ShanoPrasad Kunjappan ,  Perry A. Holman, Jr. ,  Madhan Raj Bagianathan ,  Dinesh Naik ,  Christopher Kenney ,  Ravi Kasturi Raj

IPC分类号： G01B7/30

CPC分类号： G01D5/145

摘要： This disclosure describes techniques for sensing an angular position of a rotating object over an angular position range that includes up to 360 degrees using an arc position encoder comprising a substantially 180-degree angular position sensing range. The encoder may include a base comprising an arc length defined by a first and a second end, one or more magnetic field sensors disposed within the base between the first and second ends, and one or more polarity transition sensors also disposed within the base between the first and second ends. The encoder may further include a magnetic target that includes first and second magnetic poles disposed on opposite ends so as to generate a uniform magnetic field, wherein the magnetic target is coupled to the rotating object so as to rotate about an axis of rotation located substantially in a center of a circle defined by the base.

摘要翻译： 本公开描述了使用包括基本上180度的角度位置感测范围的弧形位置编码器来感测旋转物体在包括高达360度的角度位置范围内的角位置的技术。 编码器可以包括基部，其包括由第一和第二端限定的弧长度，设置在第一和第二端之间的基部内的一个或多个磁场传感器，以及一个或多个极性转换传感器， 第一和第二端。 编码器还可以包括磁性目标，其包括设置在相对端上的第一和第二磁极，以便产生均匀的磁场，其中磁性目标物被联接到旋转物体上，以绕位于基本上位于 由基座定义的圆的中心。

公开(公告)号：US20140015520A1

公开(公告)日：2014-01-16

申请号：US13550285

申请日：2012-07-16

申请人： ShanoPrasad Kunjappan ,  Perry A. Holman, JR. ,  Madhan Raj Bagianathan ,  Dinesh Naik ,  Christopher Kenney ,  Ravi Kasturi Raj

发明人： ShanoPrasad Kunjappan ,  Perry A. Holman, JR. ,  Madhan Raj Bagianathan ,  Dinesh Naik ,  Christopher Kenney ,  Ravi Kasturi Raj

IPC分类号： G01B7/30

CPC分类号： G01D5/145

摘要： This disclosure describes techniques for sensing an angular position of a rotating object over an angular position range that includes up to 360 degrees using an arc position encoder comprising a substantially 180-degree angular position sensing range. The encoder may include a base comprising an arc length defined by a first and a second end, one or more magnetic field sensors disposed within the base between the first and second ends, and one or more polarity transition sensors also disposed within the base between the first and second ends. The encoder may further include a magnetic target that includes first and second magnetic poles disposed on opposite ends so as to generate a uniform magnetic field, wherein the magnetic target is coupled to the rotating object so as to rotate about an axis of rotation located substantially in a center of a circle defined by the base.

摘要翻译： 本公开描述了使用包括基本上180度的角度位置感测范围的弧形位置编码器来感测旋转物体在包括高达360度的角度位置范围内的角位置的技术。 编码器可以包括基部，其包括由第一和第二端限定的弧长度，设置在第一和第二端之间的基部内的一个或多个磁场传感器，以及一个或多个极性转换传感器， 第一和第二端。 编码器还可以包括磁性目标，其包括设置在相对端上的第一和第二磁极，以便产生均匀的磁场，其中磁性目标物被联接到旋转物体上，以绕位于基本上位于 由基座定义的圆的中心。

公开(公告)号：US06717789B2

公开(公告)日：2004-04-06

申请号：US10008899

申请日：2001-12-05

申请人： Perry A. Holman ,  Jason M. Chilcote

发明人： Perry A. Holman ,  Jason M. Chilcote

IPC分类号： H02H322

CPC分类号： G01R17/10 ,  G01D3/032 ,  H02M1/12

摘要： A power supply rejection circuit and method thereof for capacitively-stored reference voltages is disclosed. The power supply rejection circuit generally comprises a comparison circuit for comparing a signal associated with a power supply such as, for example, a Wheatstone bridge configuration, to a stored reference voltage, such that the comparison circuit includes at least one existing capacitor therein. At least one additional capacitor can be then coupled to the comparison circuit, such that the additional capacitor creates a capacitively-coupled voltage divider. This capacitively-coupled voltage divider negates the first order effects of power supply noise in the system. This effect significantly reduces the effect of power supply noise and improves signal jitter associated with the comparison circuit during a comparison of the signal to the stored reference voltage utilizing the comparison circuit.

摘要翻译： 公开了一种用于电容存储的参考电压的电源抑制电路及其方法。 电源抑制电路通常包括比较电路，用于将与诸如惠斯通电桥配置的电源相关联的信号与存储的参考电压进行比较，使得比较电路在其中包括至少一个现有的电容器。 然后可以将至少一个附加电容器耦合到比较电路，使得附加电容器产生电容耦合分压器。 该电容耦合分压器消除了系统中电源噪声的一阶影响。 这种效应显着降低了电源噪声的影响，并且在利用比较电路比较信号与存储的参考电压之间，改善与比较电路相关联的信号抖动。

公开(公告)号：US20130099779A1

公开(公告)日：2013-04-25

申请号：US13281019

申请日：2011-10-25

申请人： Perry A. Holman, JR.

发明人： Perry A. Holman, JR.

IPC分类号： G01R33/09 ,  G01R33/07 ,  G01R33/12

CPC分类号： G01R15/205 ,  G01R15/181 ,  G01R15/185 ,  G01R33/07 ,  G01R33/09 ,  G01R33/12

摘要： A system includes a magnetoresistive (MR) bridge circuit, a magnetic field sensor, and an adjustable load. The MR bridge circuit receives a supply voltage and generates an output voltage that indicates a strength/direction of a magnetic field. The MR bridge circuit includes first and second MR elements connected in series between a supply node and a ground node, and third and fourth MR elements connected in series between the supply node and the ground node. The output voltage is generated between a first node that is common to the first and second MR elements and a second node that is common to the third and fourth MR elements. The sensor generates signals based on the strength/direction of the magnetic field. The adjustable load is connected in parallel with one of the MR elements, and has a resistance that is controlled based on the signals generated by the sensor.

摘要翻译： 一种系统包括磁阻（MR）桥接电路，磁场传感器和可调载荷。 MR桥电路接收电源电压并产生指示磁场强度/方向的输出电压。 MR桥电路包括串联连接在电源节点和接地节点之间的第一和第二MR元件，以及串联连接在电源节点和接地节点之间的第三和第四MR元件。 在第一和第二MR元件共同的第一节点与第三和第四MR元件共同的第二节点之间产生输出电压。 传感器根据磁场的强度/方向产生信号。 可调负载与MR元件中的一个并联连接，并且具有基于由传感器产生的信号来控制的电阻。

公开(公告)号：US20120223699A1

公开(公告)日：2012-09-06

申请号：US13037950

申请日：2011-03-01

申请人： Perry A. Holman, JR. ,  Jason Chilcote

发明人： Perry A. Holman, JR. ,  Jason Chilcote

IPC分类号： G01B7/30

CPC分类号： G01D5/145 ,  G01D5/2451

摘要： This disclosure is directed to techniques for magnetic field angular position sensing. A device designed in accordance with this disclosure may include a magnetoresistive sensor configured to generate a signal indicative of an angular position of a magnetic field, the signal having an angular range of 180 degrees, a first polarity sensor configured to generate a signal indicative of a polarity of the magnetic field sensed from a first location, and a second polarity sensor configured to generate a signal indicative of a polarity of the magnetic field sensed from a second location different from the first location.

摘要翻译： 本公开涉及用于磁场角位置感测的技术。 根据本公开设计的装置可以包括磁阻传感器，其被配置为产生指示磁场的角位置的信号，该信号具有180度的角度范围，第一极性传感器被配置为产生指示 从第一位置感测的磁场的极性和第二极性传感器被配置为产生指示从与第一位置不同的第二位置感测的磁场的极性的信号。

公开(公告)号：US09041387B2

公开(公告)日：2015-05-26

申请号：US13037950

申请日：2011-03-01

申请人： Perry A. Holman, Jr. ,  Jason Chilcote

发明人： Perry A. Holman, Jr. ,  Jason Chilcote

IPC分类号： G01B7/30 ,  G01R33/07 ,  G01R33/09 ,  G01D5/14 ,  G01D5/245

CPC分类号： G01D5/145 ,  G01D5/2451

摘要： This disclosure is directed to techniques for magnetic field angular position sensing. A device designed in accordance with this disclosure may include a magnetoresistive sensor configured to generate a signal indicative of an angular position of a magnetic field, the signal having an angular range of 180 degrees, a first polarity sensor configured to generate a signal indicative of a polarity of the magnetic field sensed from a first location, and a second polarity sensor configured to generate a signal indicative of a polarity of the magnetic field sensed from a second location different from the first location.

摘要翻译： 本公开涉及用于磁场角位置感测的技术。 根据本公开设计的装置可以包括磁阻传感器，其被配置为产生指示磁场的角位置的信号，该信号具有180度的角度范围，第一极性传感器被配置为产生指示 从第一位置感测的磁场的极性和第二极性传感器被配置为产生指示从与第一位置不同的第二位置感测的磁场的极性的信号。

公开(公告)号：US08952686B2

公开(公告)日：2015-02-10

申请号：US13281019

申请日：2011-10-25

申请人： Perry A. Holman, Jr.

发明人： Perry A. Holman, Jr.

IPC分类号： G01N27/72 ,  G01R33/12 ,  G01R15/20 ,  G01R15/18 ,  G01R33/07 ,  G01R33/09 ,  G01R33/02 ,  G01R33/00

CPC分类号： G01R15/205 ,  G01R15/181 ,  G01R15/185 ,  G01R33/07 ,  G01R33/09 ,  G01R33/12

摘要： A system includes a magnetoresistive (MR) bridge circuit, a magnetic field sensor, and an adjustable load. The MR bridge circuit receives a supply voltage and generates an output voltage that indicates a strength/direction of a magnetic field. The MR bridge circuit includes first and second MR elements connected in series between a supply node and a ground node, and third and fourth MR elements connected in series between the supply node and the ground node. The output voltage is generated between a first node that is common to the first and second MR elements and a second node that is common to the third and fourth MR elements. The sensor generates signals based on the strength/direction of the magnetic field. The adjustable load is connected in parallel with one of the MR elements, and has a resistance that is controlled based on the signals generated by the sensor.

摘要翻译： 一种系统包括磁阻（MR）桥接电路，磁场传感器和可调载荷。 MR桥电路接收电源电压并产生指示磁场强度/方向的输出电压。 MR桥电路包括串联连接在电源节点和接地节点之间的第一和第二MR元件，以及串联连接在电源节点和接地节点之间的第三和第四MR元件。 在第一和第二MR元件共同的第一节点与第三和第四MR元件共同的第二节点之间产生输出电压。 传感器根据磁场的强度/方向产生信号。 可调负载与MR元件中的一个并联连接，并且具有基于由传感器产生的信号来控制的电阻。