公开(公告)号：US11125590B2

公开(公告)日：2021-09-21

申请号：US16404960

申请日：2019-05-07

Applicant: Allegro MicroSystems, LLC

Inventor： Benjamin Geiger ,  David Toebes ,  Naota Nakayama

IPC: G01D5/14 ,  G01D5/244 ,  G01D18/00 ,  G01P3/487 ,  G01P3/489 ,  G01P3/488 ,  G01R33/09 ,  G01R33/07

Abstract: A method of detecting a vibration comprises determining a vibration flag has been set during a running mode of the magnetic field sensor, remaining in the running mode until a predetermined number of vibration flags have been set, and entering a recalibration mode when the predetermined number of vibration flags have been set. A counter can be implemented for each of the plurality of vibration flags to determine if the predetermined number of vibration flags have been set.

公开(公告)号：US09739846B2

公开(公告)日：2017-08-22

申请号：US14506024

申请日：2014-10-03

Applicant: Allegro Microsystems, LLC

Inventor： Craig S. Petrie ,  Bryan Cadugan ,  David Toebes ,  Michael C. Doogue ,  William P. Taylor

IPC: G01R33/07 ,  G01R33/09 ,  G01D5/14 ,  G01D18/00

CPC classification number: G01R33/072 ,  G01D5/145 ,  G01D18/00 ,  G01R33/091

Abstract: A system includes a magnetic target and a magnetic field sensor. The magnetic field sensor comprises an output node; a circuit to detect a magnetic field produced by the magnetic target; and a processor. The processor may be configured to transmit a signal onto the output node representing the detected magnetic field; detect whether the transmitted signal is interrupted by an external source; and, if the signal is interrupted, initiate a self-test of the apparatus. Corresponding methods and apparatuses are also disclosed.

公开(公告)号：US20160097825A1

公开(公告)日：2016-04-07

申请号：US14506024

申请日：2014-10-03

Applicant: Allegro Microsystems, LLC

Inventor： Craig S. Petrie ,  Bryan Cadugan ,  David Toebes ,  Michael C. Doogue ,  William P. Taylor

IPC: G01R33/07 ,  G01R33/09

CPC classification number: G01R33/072 ,  G01D5/145 ,  G01D18/00 ,  G01R33/091

Abstract: A system includes a magnetic target and a magnetic field sensor. The magnetic field sensor comprises an output node; a circuit to detect a magnetic field produced by the magnetic target; and a processor. The processor may be configured to transmit a signal onto the output node representing the detected magnetic field; detect whether the transmitted signal is interrupted by an external source; and, if the signal is interrupted, initiate a self-test of the apparatus. Corresponding methods and apparatuses are also disclosed.

Abstract translation: 系统包括磁性靶和磁场传感器。 磁场传感器包括输出节点; 用于检测由磁性靶产生的磁场的电路; 和处理器。 处理器可以被配置为将信号发送到表示检测到的磁场的输出节点上; 检测发送信号是否被外部源中断; 并且如果信号被中断，则启动设备的自检。 还公开了相应的方法和装置。