公开(公告)号：US09329057B2

公开(公告)日：2016-05-03

申请号：US13484501

申请日：2012-05-31

申请人： Andrea Foletto ,  Michael Morris ,  Mathew Drouin ,  Devon Fernandez ,  Andreas P. Friedrich ,  P. Karl Scheller

发明人： Andrea Foletto ,  Michael Morris ,  Mathew Drouin ,  Devon Fernandez ,  Andreas P. Friedrich ,  P. Karl Scheller

IPC分类号： G01R33/06 ,  G01D5/244 ,  G01R33/02 ,  G01D5/14

CPC分类号： G01D5/2448 ,  G01D5/145

摘要： Presented herein is a magnetic field sensor architecture that uses outputs of a peak detector and threshold detector operating in parallel to detect magnetic anomalies that may be associated with the target being sensed, e.g., a rotational ferromagnetic object such as a toothed gear, and use such detection to prevent sensor malfunction. The sensor includes an edge detection circuit and an error detection circuit. In one embodiment, the edge detection circuit includes circuits to detect edges (or transitions) of the threshold and peak detector output signals and the error detection circuit includes circuits, responsive to the edge detection circuit, to indicate an error when a “missed transition” occurs or a peak-to-peak value of an input signal as detected by the peak detector for a current cycle differs from an expected peak-to-peak value by a predetermined amount.

摘要翻译： 这里呈现的是一种磁场传感器架构，其使用平行操作的峰值检测器和阈值检测器的输出来检测可能与感测到的目标相关联的磁异常，例如旋转铁磁物体，例如齿轮，并使用 检测以防止传感器故障。 传感器包括边缘检测电路和错误检测电路。 在一个实施例中，边缘检测电路包括用于检测阈值和峰值检测器输出信号的边缘（或转换）的电路，并且误差检测电路包括响应于边缘检测电路的指示当“错过转换” 或由峰值检测器为当前周期检测的输入信号的峰 - 峰值与期望的峰 - 峰值不同预定量。

公开(公告)号：US09222990B2

公开(公告)日：2015-12-29

申请号：US13526099

申请日：2012-06-18

申请人： Daniel S. Dwyer ,  Christine M. Graham ,  P. Karl Scheller

发明人： Daniel S. Dwyer ,  Christine M. Graham ,  P. Karl Scheller

IPC分类号： G01B7/30 ,  G01R33/02 ,  G01R33/00 ,  G01R33/07

CPC分类号： G01R33/02 ,  G01R33/0029 ,  G01R33/07

摘要： A method of performing a self-test associated with a magnetic field sensor includes generating a proximity signal responsive to a proximity of a sensed object with one or more magnetic field sensing elements, and identifying one or more characteristic values associated with the proximity signal while the proximity signal is responding to the proximity signal, The method also includes categorizing the one or more characteristic values into three or more potential categories, including three or more categories, wherein the plurality of potential categories is representative of a plurality of discrete self-test states of the proximity signal that could occur while the proximity signal is responding to the proximity of the sensed object. The method also includes communicating at least one of the plurality of potential categories into which at least one of the one or more characteristic values was categorized. A magnetic field senor implements the above method.

摘要翻译： 执行与磁场传感器相关联的自检的方法包括响应于感测对象与一个或多个磁场感测元件的接近度而生成接近信号，以及识别与接近信号相关联的一个或多个特征值，同时 接近信号响应于接近信号。该方法还包括将一个或多个特征值分类为三个或更多个潜在类别，包括三个或更多个类别，其中多个潜在类别表示多个离散自检状态 当接近信号响应感测对象的接近时可能发生的接近信号。 所述方法还包括将所述一个或多个特征值中的至少一个分类到所述多个潜在类别中的至少一个进行通信。 磁场传感器实现上述方法。

公开(公告)号：US09007054B2

公开(公告)日：2015-04-14

申请号：US13439082

申请日：2012-04-04

申请人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

发明人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

IPC分类号： G01R33/00 ,  G01R33/07 ,  G01R33/09 ,  G01D3/028

CPC分类号： G01R33/0094 ,  G01D3/028 ,  G01R33/07 ,  G01R33/09

摘要： An angle sensor to provide sensor-to-magnet misalignment detection and correction capability in rotation angle measurement applications is presented. The angle sensor has magnetic field sensing elements to sense magnetic field associated with a rotating magnet. The angle sensor includes circuitry to generate signals based on the sensing by the sensing elements. The signals provide information that can be combined according to an error function to provide misalignment detection. The angle sensor can be used with or can be incorporated in an angle measurement device that employs a processing unit to produce a rotation angle value. In one embodiment, the processing unit is configured to implement the error function and correct the angle value for detected misalignment. In another embodiment, the error function is performed by a programming device and detected misalignment is corrected through mechanical adjustment of sensor-to-magnet position.

摘要翻译： 提出了一种角度传感器，用于在旋转角度测量应用中提供传感器到磁体的未对准检测和校正能力。 角度传感器具有用于感测与旋转磁体相关联的磁场的磁场感测元件。 角度传感器包括基于感测元件的感测产生信号的电路。 信号提供可以根据误差函数组合以提供不对准检测的信息。 该角度传感器可以与采用加工单元产生旋转角度值的角度测量装置结合使用或者可以并入其中。 在一个实施例中，处理单元被配置为实现误差函数并校正检测到的未对准的角度值。 在另一个实施例中，误差函数由编程装置执行，并且通过传感器到磁体位置的机械调节来校正检测到的未对准。

公开(公告)号：US08723512B1

公开(公告)日：2014-05-13

申请号：US13685287

申请日：2012-11-26

申请人： Eric Burdette ,  James M. Bailey ,  Daniel S. Dwyer ,  Jeff Eagen ,  Glenn A. Forrest ,  Christine Graham ,  Eric Shoemaker ,  P. Karl Scheller

发明人： Eric Burdette ,  James M. Bailey ,  Daniel S. Dwyer ,  Jeff Eagen ,  Glenn A. Forrest ,  Christine Graham ,  Eric Shoemaker ,  P. Karl Scheller

IPC分类号： G01B7/30

CPC分类号： G01B7/14 ,  G01D5/2448 ,  G01P3/488 ,  G01P3/489

摘要： A circuit to detect a movement of an object includes a magnetic field sensing element for generating a magnetic field signal proportional to a magnetic field associated with the object and a motion detector to generate a motion signal indicative of the movement of the object. The motion detector includes a peak identifying circuit to provide a peak signal and a peak sample selection module that selects a sample associated with one or more prior cycles of a magnetic field signal to generate a selected peak signal. The motion detector further includes a threshold generator to generate a threshold signal as a function of the selected peak signal and a comparator to compare the threshold signal with the magnetic field signal to generate the motion signal. Peak samples from prior magnetic field signal cycles may be averaged for use to establish the threshold signal. A method associated with the circuit is also described.

摘要翻译： 用于检测物体运动的电路包括用于产生与与物体相关联的磁场成比例的磁场信号的磁场感测元件和运动检测器，以产生指示物体运动的运动信号。 运动检测器包括提供峰值信号的峰值识别电路和峰值采样选择模块，其选择与磁场信号的一个或多个先前循环相关联的采样以产生所选择的峰值信号。 运动检测器还包括阈值产生器，用于根据所选择的峰值信号产生阈值信号;以及比较器，用于将阈值信号与磁场信号进行比较以产生运动信号。 来自先前磁场信号周期的峰值采样可以被平均以用于建立阈值信号。 还描述了与电路相关联的方法。

公开(公告)号：US20130335074A1

公开(公告)日：2013-12-19

申请号：US13526099

申请日：2012-06-18

申请人： Daniel S. Dwyer ,  Christine Graham ,  P. Karl Scheller

发明人： Daniel S. Dwyer ,  Christine Graham ,  P. Karl Scheller

IPC分类号： G01N27/72

CPC分类号： G01R33/02 ,  G01R33/0029 ,  G01R33/07

摘要： Magnetic field sensor and related techniques can identify passing conditions, failing conditions, and marginal conditions of a sensed object. The magnetic field sensor and techniques can use one or more peak values of a proximity signal representative of proximity of the object, DC offset values of the proximity signal, or threshold values related to an amplitude of a signal representative of the proximity signal to identify the conditions.

摘要翻译： 磁场传感器和相关技术可以识别感测对象的通过条件，故障条件和边缘条件。 磁场传感器和技术可以使用表示物体接近度的接近信号的一个或多个峰值，接近信号的DC偏移值或与表示接近信号的信号的幅度有关的阈值，以识别 条件。

公开(公告)号：US08058864B2

公开(公告)日：2011-11-15

申请号：US12425528

申请日：2009-04-17

申请人： P. Karl Scheller ,  Andreas P. Friedrich ,  William P. Taylor

发明人： P. Karl Scheller ,  Andreas P. Friedrich ,  William P. Taylor

IPC分类号： G01R33/02

CPC分类号： G01R33/0029 ,  H01L43/06 ,  H01L43/08

摘要： A magnetic field has a threshold that adapts in relation to a magnitude of a magnetic field signal representative of a movement of an object. A corresponding method adapts a threshold in relation to a magnitude of a magnetic field signal representative of a movement of an object.

摘要翻译： 磁场具有相对于表示物体的运动的磁场信号的大小适应的阈值。 相应的方法适应相对于表示物体的运动的磁场信号的大小的阈值。

公开(公告)号：US20100052424A1

公开(公告)日：2010-03-04

申请号：US12198191

申请日：2008-08-26

申请人： William P. Taylor ,  P. Karl Scheller ,  Andrea Foletto

发明人： William P. Taylor ,  P. Karl Scheller ,  Andrea Foletto

IPC分类号： H02J7/34

CPC分类号： H01L23/5223 ,  H01L23/5227 ,  H01L2224/0603 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2924/09701 ,  H01L2924/3011 ,  Y10T307/511 ,  H01L2924/00014

摘要： Methods and apparatus for a sensor to provide a sensor output, an integrated circuit module formed at least partially on a substrate to receive the sensor output and provide an IC output signal, an output circuit having a voltage input to receive a voltage supply signal via a switch element and a signal input to receive the IC output signal and an output to provide a voltage output signal, and an integrated power storage element coupled to the voltage input of the output circuit to provide power during an interruption of the voltage supply signal, wherein the power storage element includes at least one layer generally parallel to the substrate.

摘要翻译： 用于提供传感器输出的传感器的方法和装置，至少部分地形成在基板上以接收传感器输出并提供IC输出信号的集成电路模块，具有电压输入的输出电路，以经由一个 开关元件和用于接收IC输出信号的信号输入端和输出端以提供电压输出信号;以及集成功率存储元件，耦合到输出电路的电压输入端，以在电压供应信号中断期间提供电力，其中 功率存储元件包括大致平行于衬底的至少一个层。

公开(公告)号：US09081041B2

公开(公告)日：2015-07-14

申请号：US13439094

申请日：2012-04-04

申请人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

发明人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

IPC分类号： G01R33/02 ,  G01R15/20

CPC分类号： G01R15/207

摘要： A sensor with multiple magnetic field sensing elements for use in current sensing and other applications is presented. In one configuration, the sensor can obtain differential and absolute current measurements of current in current-carrying conductors. When employed in a ground fault interrupter (GFI) application, a first magnetic field sensing element can be used to measure the absolute current flowing in the phase conductor (phase current), a second magnetic field sensing element can be used to measure the absolute current flowing in the neutral conductor (neutral current) and a difference between the phase and neutral currents can be measured by a third magnetic field sensing element or determined from measurements of the first and second magnetic field sensing elements. In another configuration, the sensor can obtain a measure of the difference between currents and/or the sum of currents in current-carrying conductors.

摘要翻译： 提出了一种用于电流检测和其他应用的具有多个磁场感测元件的传感器。 在一种配置中，传感器可以获得载流导体中电流的差分和绝对电流测量。 当用于接地故障断续器（GFI）应用时，可以使用第一磁场感测元件来测量在相导体（相电流）中流动的绝对电流，第二磁场感测元件可用于测量绝对电流 在中性导体（中性电流）中流动，并且相电流和中性电流之间的差异可以由第三磁场感测元件测量或者由第一和第二磁场感测元件的测量确定。 在另一种配置中，传感器可以获得电流差和/或载流导体中电流之和的量度。

公开(公告)号：US08896295B2

公开(公告)日：2014-11-25

申请号：US13439074

申请日：2012-04-04

申请人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

发明人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

IPC分类号： G01B7/14

CPC分类号： G01R33/0094 ,  G01R15/207 ,  H01L43/06 ,  H01L43/065 ,  H01L43/08

摘要： A sensor with multiple magnetic field sensing elements for use in current sensing and other applications is presented. The sensor includes an arrangement of two or more magnetic field sensing elements to sense magnetic field associated with a target. The sensor further includes circuitry to generate a sensor output signal based on sensing of at least one of the magnetic field sensing elements of the arrangement. Also included is a programmable misalignment adjustment block to control the circuitry to generate the output signal with compensation for misalignment between the sensor and the target. The programmable misalignment adjustment block can be programmed to select measurement of one of the two or more magnetic field sensing elements, or alternatively, a mathematical combination of measurements of the two or more magnetic field sensing elements, for generating the sensor output signal when a test of the sensor indicates a misalignment.

摘要翻译： 提出了一种用于电流检测和其他应用的具有多个磁场感测元件的传感器。 传感器包括两个或更多个磁场感测元件的布置，用于感测与目标相关联的磁场。 该传感器还包括基于感测该装置的磁场感测元件中的至少一个来产生传感器输出信号的电路。 还包括可编程的未对准调整块，以控制电路以产生输出信号，并补偿传感器和目标之间的未对准。 可编程的未对准调整块可以被编程以选择两个或更多个磁场感测元件中的一个的测量，或者替代地，两个或更多个磁场感测元件的测量的数学组合，用于当测试时产生传感器输出信号 的传感器表示未对准。

公开(公告)号：US20130265037A1

公开(公告)日：2013-10-10

申请号：US13439082

申请日：2012-04-04

申请人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

发明人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

IPC分类号： G01B7/30 ,  G01R33/09 ,  G01R33/07

CPC分类号： G01R33/0094 ,  G01D3/028 ,  G01R33/07 ,  G01R33/09

摘要： An angle sensor to provide sensor-to-magnet misalignment detection and correction capability in rotation angle measurement applications is presented. The angle sensor has magnetic field sensing elements to sense magnetic field associated with a rotating magnet. The angle sensor includes circuitry to generate signals based on the sensing by the sensing elements. The signals provide information that can be combined according to an error function to provide misalignment detection. The angle sensor can be used with or can be incorporated in an angle measurement device that employs a processing unit to produce a rotation angle value. In one embodiment, the processing unit is configured to implement the error function and correct the angle value for detected misalignment. In another embodiment, the error function is performed by a programming device and detected misalignment is corrected through mechanical adjustment of sensor-to-magnet position.

摘要翻译： 提出了一种角度传感器，用于在旋转角度测量应用中提供传感器到磁体的未对准检测和校正能力。 角度传感器具有用于感测与旋转磁体相关联的磁场的磁场感测元件。 角度传感器包括基于感测元件的感测产生信号的电路。 信号提供可以根据误差函数组合以提供不对准检测的信息。 该角度传感器可以与采用加工单元产生旋转角度值的角度测量装置结合使用或者可以并入其中。 在一个实施例中，处理单元被配置为实现误差函数并校正检测到的未对准的角度值。 在另一个实施例中，误差函数由编程装置执行，并且通过传感器到磁体位置的机械调节来校正检测到的未对准。