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：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。

公开(公告)号：US5671161A

公开(公告)日：1997-09-23

申请号：US574803

申请日：1995-12-19

申请人： Ronika A. Bennet ,  Jeffrey S. Hall ,  Perry A. Holman, Jr. ,  Lyle D. Johnsen ,  Matthew D. Kirkwood

发明人： Ronika A. Bennet ,  Jeffrey S. Hall ,  Perry A. Holman, Jr. ,  Lyle D. Johnsen ,  Matthew D. Kirkwood

IPC分类号： H03K17/97 ,  H01L43/06

CPC分类号： H03K17/97

摘要： A switch is provided with the ability to diagnose its own operation and provide signals that represent the actuation of the switch and various diagnostic outputs that indicate fault conditions or potential fault conditions with regard to either the switch or related machinery. A magnetically sensitive component, such as a Hall element, is used to provide an analog output signal that is representative of the position of an actuator to which a magnet structure is rigidly attached. As the actuator moves in response to an external force, the magnet structure moves with respect to a stationary magnetically sensitive component. The analog output from the magnetically sensitive component can be used to determine the position of the switch. Based on this information, a microprocessor provides a binary output signal indicating whether the switch is actuated or deactuated. In addition, the movement of the actuator can be compared to various thresholds to determine the operate point, the overtravel point, the total travel and the velocity of the switch plunger.

摘要翻译： 提供开关具有诊断其自身操作并提供表示开关的致动的信号以及指示关于开关或相关机械的故障状况或潜在故障状况的各种诊断输出的能力。 使用诸如霍尔元件的磁敏元件来提供代表磁体结构刚性连接的致动器的位置的模拟输出信号。 当致动器响应于外力而移动时，磁体结构相对于固定的磁敏部件移动。 来自磁敏元件的模拟输出可用于确定开关的位置。 基于该信息，微处理器提供指示开关是启动还是去激活的二进制输出信号。 此外，致动器的运动可以与各种阈值进行比较，以确定开关柱塞的操作点，超程点，总行程和速度。