公开(公告)号：US09347799B2

公开(公告)日：2016-05-24

申请号：US14177994

申请日：2014-02-11

Applicant: NXP B.V.

Inventor： Alexé Levan Nazarian ,  Frederik Willem Maurits Vanhelmont ,  Jacobus Josephus Maria Ruigrok

IPC: G01B7/14 ,  G01R33/09 ,  G01D5/14

CPC classification number: G01D5/147 ,  G01D5/145 ,  G01R33/09

Abstract: It is described a magnetic field differential sensor system for measuring rotational movements of a shaft. The described magnetic field sensor system (200) comprises (a) a biasing magnet (210, 510) configured for generating a biasing magnetic field; (b) a magnetic wheel (230) having a wheel axis and a circumferential surface which comprises a regular structure of teeth (231) and gaps (232) arranged in an alternating manner, wherein (i) the magnetic wheel (230) is attachable to the shaft and (ii) the magnetic wheel (230) can be magnetized by the biasing magnetic field; and (c) a magnetic sensor arrangement (220) comprising four magnetic sensor elements (221, 222, 223, 224) being connected with each other in a Wheatstone bridge configuration. Respectively two of the magnetic sensor elements (221, 222, 223, 224) are assigned to one half bridge of the Wheatstone bridge. Further, the four magnetic sensor elements (221, 222, 223, 224) are arranged within an y-z plane, wherein an x-axis, a y-axis and a z-axis define an orthogonal Cartesian coordinate system in which (i) the x-axis is oriented parallel with the wheel axis of the magnetic wheel (230), (ii) the y-axis is oriented tangential to the circumferential surface of the magnetic wheel (230), and (iii) the z-axis is the symmetry line through the center of the biasing magnet (210, 510) and the center of the magnetic wheel (230). The magnetic sensor elements can be hall sensor elements or magnetoresistive sensor elements (221, 222, 223, 224).

Abstract translation: 描述了用于测量轴的旋转运动的磁场差分传感器系统。 所描述的磁场传感器系统（200）包括（a）被配置为产生偏置磁场的偏置磁体（210,510）; （b）具有车轮轴线和圆周表面的磁轮（230），其包括以交替方式布置的规则结构的齿（231）和间隙（232），其中（i）磁轮（230）可附接 （ii）磁轮（230）可被偏置磁场磁化; 和（c）包括以惠斯通电桥配置彼此连接的四个磁性传感器元件（221,222,223,224）的磁传感器装置（220）。 分别将两个磁传感器元件（221,222,223,224）分配给惠斯通电桥的一个半桥。 此外，四个磁性​​传感器元件（221,222,223,224）被布置在yz平面内，其中x轴，y轴和z轴限定正交笛卡尔坐标系，其中（i） x轴与磁轮（230）的车轮轴平行，（ii）y轴定向成与磁轮（230）的圆周表面相切，并且（iii）z轴是 通过偏置磁体（210,510）的中心和磁轮（230）的中心的对称线。 磁传感器元件可以是霍尔传感器元件或磁阻传感器元件（221,222,223,224）。

公开(公告)号：US09103657B2

公开(公告)日：2015-08-11

申请号：US14017453

申请日：2013-09-04

Applicant: NXP B.V.

Inventor： Jacobus Josephus Maria Ruigrok ,  Alexe Levan Nazarian ,  Frederik Willem Maurits Vanhelmont

IPC: G01B7/30 ,  G01R33/02 ,  G01D5/14 ,  G01R33/00 ,  G01R33/09

CPC classification number: G01B7/30 ,  G01D5/145 ,  G01D5/147 ,  G01R33/0011 ,  G01R33/091

Abstract: A magnetic field sensor system for measuring rotational movements of a shaft is disclosed. The sensor system includes a biasing magnet configured for generating a biasing magnetic field and a magnetic wheel having a wheel axis and a circumferential surface which comprises a regular structure of teeth and gaps arranged in an alternating manner. The magnetic wheel is attachable to the shaft and is magnetizable by the biasing magnetic field. A magnetoresistive sensor arrangement comprising four magnetoresistive sensor elements being connected with each other in a Wheatstone bridge, respectively two of the magnetoresistive sensor elements being assigned to one half bridge of the Wheatstone bridge. The four magnetoresistive sensor elements are arranged within an x-y plane.

Abstract translation: 公开了一种用于测量轴的旋转运动的磁场传感器系统。 传感器系统包括被配置为产生偏置磁场的偏置磁体和具有轮轴线和圆周表面的磁轮，该磁轮包括以交替方式布置的齿和间隙的规则结构。 磁轮可连接到轴上，并可通过偏置磁场磁化。 磁阻传感器装置包括四个磁阻传感器元件，彼此在惠斯登电桥中相互连接，分别将两个磁阻传感器元件分配给惠斯通电桥的一个半桥。 四个磁阻传感器元件被布置在x-y平面内。

公开(公告)号：US08884610B2

公开(公告)日：2014-11-11

申请号：US14010020

申请日：2013-08-26

Applicant: NXP B.V.

Inventor： Robert Hendrikus Margaretha Van Veldhoven ,  Jacobus Josephus Maria Ruigrok ,  Joerg Stegelmann

IPC: G01B7/14 ,  G01D5/14 ,  B82Y25/00 ,  G01R33/00 ,  G01R33/07 ,  G01R33/09

CPC classification number: G01D5/14 ,  B82Y25/00 ,  G01D5/145 ,  G01R33/0035 ,  G01R33/07 ,  G01R33/091 ,  G01R33/093 ,  G01R33/096

Abstract: A magnetic field sensor assembly for measuring an angular direction of a sensed magnetic field relative to the assembly is disclosed. The sensor assembly includes a sensor of a first type configured to sense an orientation of the sensed magnetic field, a sensor of a second type configured to measure an orientation and a direction of the sensed magnetic field and processing circuitry connected to each of the magnetic field sensors. The processing circuitry being configured to process output signals from the sensor of the first type to determine an uncorrected sensed magnetic field angle and to apply an offset angle to the uncorrected magnetic field angle dependent on a logical combination of signs of output signals from the sensors of the first and second types.

Abstract translation: 公开了一种用于测量感测磁场相对于组件的角度方向的磁场传感器组件。 传感器组件包括被配置为感测所感测的磁场的取向的第一类型的传感器，被配置成测量感测磁场的取向和方向的第二类型的传感器，以及连接到每个磁场的处理电路 传感器。 处理电路被配置为处理来自第一类型的传感器的输出信号以确定未校正的感测磁场角，并且根据来自传感器的传感器的输出信号的符号的逻辑组合对未校正的磁场角施加偏移角 第一类和第二类。