公开(公告)号：US20160178400A1

公开(公告)日：2016-06-23

申请号：US14580814

申请日：2014-12-23

Applicant: Allegro MicroSystems, LLC

Inventor： Yannick Vuillermet ,  Andreas P. Friedrich ,  Andrea Foletto

IPC: G01D5/20

CPC classification number: G01D5/145 ,  G01R33/0005 ,  G01R33/02 ,  G05G9/047

Abstract: Systems and methods for detecting a magnetic target include a plurality of magnetic field sensing elements arranged about a central point. Each one of the plurality of magnetic field sensing elements is configured to measure a magnetic field produced by a magnetic target and provide a respective output signal that represents a respective measurement of a strength of the magnetic field. A processor circuit is coupled to receive the output signal from each one of the plurality of magnetic field sensing elements and determine a barycenter of the measurements of the magnetic field based on a position of the magnetic field sensing elements.

Abstract translation: 用于检测磁性目标的系统和方法包括围绕中心点布置的多个磁场感测元件。 多个磁场感测元件中的每一个被配置为测量由磁性目标产生的磁场，并且提供表示磁场强度的相应测量值的相应输出信号。 处理器电路被耦合以从多个磁场感测元件中的每一个接收输出信号，并且基于磁场感测元件的位置来确定磁场测量的重心。

公开(公告)号：US09175981B2

公开(公告)日：2015-11-03

申请号：US13859245

申请日：2013-04-09

Applicant: Allegro Microsystems, LLC

Inventor： Andrea Foletto ,  Devon Fernandez ,  Eric Burdette

IPC: G01B7/30 ,  G01D5/12 ,  G01D5/14 ,  G01D5/244 ,  G01P3/487 ,  G01P3/488 ,  G01P3/489 ,  G01R25/00 ,  G01P21/02

CPC classification number: G01D5/12 ,  G01D5/145 ,  G01D5/2448 ,  G01P3/487 ,  G01P3/488 ,  G01P3/489 ,  G01P21/02 ,  G01R25/005

Abstract: A motion sensor has a state processor to identify states associated with a magnetic field signal provided by a magnetic field sensing element. The state processor includes a state peak logic module configured to generate a signal having signal states that have a reduced amount of state chatter.

Abstract translation: 运动传感器具有状态处理器，用于识别与由磁场感测元件提供的磁场信号相关联的状态。 状态处理器包括状态峰值逻辑模块，其被配置为产生具有减少的状态抖动量的信号状态的信号。

公开(公告)号：US20150077100A1

公开(公告)日：2015-03-19

申请号：US14550202

申请日：2014-11-21

Applicant: Allegro MicroSystems, LLC

Inventor： Andreas P. Friedrich ,  Andrea Foletto ,  Gary T. Pepka

IPC: G01R33/07 ,  H01L43/06 ,  G01R33/00

CPC classification number: G01R33/072 ,  G01R33/0052 ,  G01R33/077 ,  H01L43/065

Abstract: A magnetic field sensor includes a circular vertical Hall (CVH) sensing element and at least one planar Hall element. The CVH sensing element has contacts arranged over a common implant region in a substrate. In some embodiments, the at least one planar Hall element is formed as a circular planar Hall (CPH) sensing element also having contacts disposed over the common implant region. A CPH sensing element and a method of fabricating the CPH sensing element are separately described.

Abstract translation: 磁场传感器包括圆形垂直霍尔（CVH）感测元件和至少一个平面霍尔元件。 CVH感测元件具有布置在衬底中的公共植入区域上的触点。 在一些实施例中，至少一个平面霍尔元件形成为也具有布置在公共植入区域上方的触点的圆形平面霍尔（CPH）感测元件。 分别描述CPH感测元件和制造CPH感测元件的方法。

公开(公告)号：US20140062463A1

公开(公告)日：2014-03-06

申请号：US14061106

申请日：2013-10-23

Applicant: Allegro Microsystems, LLC

Inventor： Andrea Foletto ,  Andreas P. Friedrich

IPC: G01B7/14

CPC classification number: G01B7/14 ,  G01D5/145 ,  G01D5/24476 ,  G01P3/488 ,  G01P3/489

Abstract: A circuit to detect a movement of an object provides a threshold selection module that uses one or more threshold signals identified prior to a present cycle of magnetic field signal in order to establish a threshold signal used for a present cycle of the magnetic field signal. A method associated with the circuit is also described.

Abstract translation: 用于检测物体的移动的电路提供阈值选择模块，该阈值选择模块使用在磁场信号的当前周期之前识别的一个或多个阈值信号，以便建立用于磁场信号的当前周期的阈值信号。 还描述了与电路相关联的方法。

公开(公告)号：US20130226490A1

公开(公告)日：2013-08-29

申请号：US13859245

申请日：2013-04-09

Applicant: Allegro Microsystems, LLC

Inventor： Andrea Foletto ,  Devon Fernandez ,  Eric Burdette

IPC: G01R25/00

CPC classification number: G01D5/12 ,  G01D5/145 ,  G01D5/2448 ,  G01P3/487 ,  G01P3/488 ,  G01P3/489 ,  G01P21/02 ,  G01R25/005

Abstract: A motion sensor has a state processor to identify states associated with a magnetic field signal provided by a magnetic field sensing element. The state processor includes a state peak logic module configured to generate states that have a reduced amount of state chatter.

Abstract translation: 运动传感器具有状态处理器，以识别与由磁场感测元件提供的磁场信号相关联的状态。 状态处理器包括状态峰值逻辑模块，其被配置为产生具有减少的状态抖动量的状态。