公开(公告)号：US20050150281A1

公开(公告)日：2005-07-14

申请号：US10755776

申请日：2004-01-12

申请人： Thaddeus Schroeder ,  Francis Szczublewski ,  Laci Jalics

发明人： Thaddeus Schroeder ,  Francis Szczublewski ,  Laci Jalics

IPC分类号： G01D5/14 ,  G01L3/26

CPC分类号： G01D5/145

摘要： A self-powered, wireless sensor assembly is provided for sensing crankshaft position of an engine comprising a rotatable flywheel having a ring gear. The sensor assembly includes an electromagnetic sensor responsive to structural features on the ring gear when the ring gear rotates. A power supply is coupled to generate a direct current in response to the output signal from the electromagnetic sensor. A transceiver is coupled to one of the following sensors: a magnetostatic sensor energized by the power supply and responsive to the structural features on the ring gear to generate an output signal when the ring gear rotates, and the electromagnetic sensor. The transceiver is configured to wirelessly transmit the output signal from that one sensor, wherein the output signal from that one sensor comprises information indicative of the instantaneous speed of said engine.

摘要翻译： 提供自动供电的无线传感器组件，用于感测包括具有环形齿轮的可旋转飞轮的发动机的曲轴位置。 传感器组件包括响应于环形齿轮旋转时的环形齿轮上的结构特征的电磁传感器。 电源被耦合以响应于来自电磁传感器的输出信号而产生直流电。 收发器耦合到以下传感器之一：静电传感器，其由电源供电并响应于环形齿轮上的结构特征以在齿圈旋转时产生输出信号，并且电磁传感器。 收发器被配置为从该一个传感器无线地传输输出信号，其中来自该一个传感器的输出信号包括指示所述发动机的瞬时速度的信息。

公开(公告)号：US06776058B1

公开(公告)日：2004-08-17

申请号：US10385234

申请日：2003-03-10

申请人： Thaddeus Schroeder

发明人： Thaddeus Schroeder

IPC分类号： G01L302

CPC分类号： G01L3/109 ,  G01L3/104

摘要： A digital torque sensor employing a torsion bar, a target wheel at each end thereof, and at least two magnetosensitive (galvanomagnetic) sensors, in the form of magnetosensitive arrays, one for each target wheel, respectively, to precisely determine the angle of twist of the torsion bar. The torque sensor also provides target wheel relative position, rotational speed and rotational direction, and is capable of self-compensation over wide temperature ranges and air gaps, including tilts, does not require tight assembly tolerances and has a theoretically infinite life due to its non-contact nature.

摘要翻译： 数字扭矩传感器分别使用扭杆，其每端的目标轮和至少两个磁感应阵列形式的磁感应（电磁感应）传感器，每个目标轮一个，以精确地确定扭转角度 扭杆。 扭矩传感器还提供目标车轮的相对位置，转速和旋转方向，并且能够在宽温度范围内进行自补偿，并且包括倾斜在内的气隙不需要紧密的组装公差，并且在理论上无限大的使用寿命由于其非 - 接触性质

公开(公告)号：US06538429B2

公开(公告)日：2003-03-25

申请号：US09780301

申请日：2001-02-09

申请人： Thaddeus Schroeder ,  Jose Alberto Guerra

发明人： Thaddeus Schroeder ,  Jose Alberto Guerra

IPC分类号： G01B730

CPC分类号： G01D5/145

摘要： An angular position sensor assembly for a vehicle generator shaft includes one magnet and three magnetic field sensors placed within a housing. The sensors are disposed on a circuit board that is parallel to the end of a generator shaft. The sensors are configured so that signals from the sensors are out-of-phase by predetermined angles. The generator shaft alternatingly forms plural slots and plural teeth. As the shaft rotates, the slots and teeth cause a change in a magnetic field around each sensor. By sensing the changes in the magnetic field, the position of the shaft can be determined from the out of phase signals received from the sensors.

摘要翻译： 用于车辆发电机轴的角度位置传感器组件包括一个磁体和放置在壳体内的三个磁场传感器。 传感器设置在平行于发电机轴端部的电路板上。 传感器被配置成使得来自传感器的信号异相预定角度。 发电机轴交替地形成多个槽和多个齿。 当轴旋转时，槽和齿引起每个传感器周围磁场的变化。 通过感测磁场的变化，可以根据从传感器接收到的异相信号来确定轴的位置。

公开(公告)号：US06512369B2

公开(公告)日：2003-01-28

申请号：US09862659

申请日：2001-05-22

申请人： Joseph Pierre Heremans ,  Dale Lee Partin ,  Thaddeus Schroeder

发明人： Joseph Pierre Heremans ,  Dale Lee Partin ,  Thaddeus Schroeder

IPC分类号： G01R3309

CPC分类号： G01R33/09

摘要： A magnetoresistor voltage divider includes a bottom layer disposed on a substrate. A middle layer is disposed on the bottom layer. A top layer is disposed on the middle layer. The bottom and top layer are resistive layers and the middle layer is an insulating layer. A common terminal is connected to the bottom layer and the top layer. A reference resistor terminal is connected to the bottom layer only. Moreover, a sensing MR terminal is connected to the top layer only. Accordingly, a sensing MR is established between the common terminal and the sensing MR terminal and a reference resistor is established between the common terminal and the reference resistor terminal. Thus, the sensing MR is stacked on top of the reference resistor.

摘要翻译： 磁电阻分压器包括设置在基板上的底层。 中间层设置在底层上。 顶层设置在中间层上。 底层和顶层是电阻层，中间层是绝缘层。 公共端子连接到底层和顶层。 参考电阻端子仅连接到底层。 此外，感测MR终端仅连接到顶层。 因此，在公共端子和感测MR端子之间建立感测MR，并且在公共端子和参考电阻器端子之间建立参考电阻器。 因此，感测MR堆叠在参考电阻器的顶部。

公开(公告)号：US06469497B2

公开(公告)日：2002-10-22

申请号：US09757223

申请日：2001-01-09

申请人： Thaddeus Schroeder

发明人： Thaddeus Schroeder

IPC分类号： G01B700

CPC分类号： G01D5/145

摘要： A position sensor system capable of self compensation over wide temperature ranges, air gaps and tilts. Three matched MRs are aligned in the direction of movement of a magnetic target. The middle MR is the position sensor, and the two outer MRs serve as reference sensors which sense the magnetic field at the limits of the position sensing range. The cooperating magnetic target assures that one of the two outer MR elements is always exposed to some maximum magnetic field, BMAX, corresponding to a position XMAX, and the other MR element is always exposed to some minimum magnetic field, BMIN, corresponding to a position XMIN, such that BMIN≦BX≦BMAX, corresponding to XMIN≦X≦XMAX, where BX is the magnetic field measured by the middle MR and varies with the position, X, of the target. The actual position, X, is computed assuming a linear relation between MR resistance in the magnetic field range from BMIN to BMAX and the position, X, of the target. This is accomplished by making the magnetic field a linear function of position in the range XMIN to XMAX and using MRs whose resistance is a linear function of magnetic field in the range BMIN to BMAX.

摘要翻译： 一种位置传感器系统，能够在宽温度范围内自补偿，气隙和倾斜。 三个匹配的MR在磁性目标的移动方向上对齐。 中间MR是位置传感器，两个外部MR用作在位置感测范围的极限处感测磁场的参考传感器。 协同磁性目标确保两个外部MR元件中的一个总是暴露于对应于位置XMAX的一些最大磁场BMAX，另一个MR元件总是暴露于对应于位置的一些最小磁场BMIN XMIN，使得对应于XMIN <= X <= XMAX的BMIN <= BX <= BMAX，其中BX是由中间MR测量的磁场，并且随着目标的位置X而变化。 假设在从BMIN到BMAX的磁场范围内的MR电阻与目标的位置X之间的线性关系来计算实际位置X。 这是通过使磁场成为XMIN至XMAX范围内的位置的线性函数，并使用电阻为BMIN至BMAX范围内的磁场的线性函数的MR来实现的。

公开(公告)号：US06326782B1

公开(公告)日：2001-12-04

申请号：US09270904

申请日：1999-03-15

申请人： Thaddeus Schroeder

发明人： Thaddeus Schroeder

IPC分类号： G01B714

CPC分类号： G01B7/004

摘要： A magnetosensitive die and actualizing circuit therefor by which a plurality of individual magnetosensitive elements are arranged and configured so as to produce a two dimensional position sensor which does not require the use of active components. Four MR elements are provided, wherein each MR element has an orthogonally serpentine configuration. A first MR sensor is formed of two MR elements that are diametrically opposed along a first axis, and a second MR sensor is formed of the remaining two MR elements which are diametrically opposed along a second, orthogonal axis. Each MR element is interdigitated with both of the MR elements of the other MR sensor, such that each MR sensor is electrically independent and orthogonally oriented with respect to the other MR sensor. Accordingly, one MR sensor consisting of two MR elements senses position along a first axis, and the other MR sensor consisting of the two other MR elements senses position along a second axis that is orthogonal to the first axis. The interdigitation of the MR elements may be accomplished with geometries other than orthogonally serpentine.

摘要翻译： 一种磁感应芯及其实现电路，通过该磁感应模具和多个单独的磁敏元件被布置和构造成产生不需要使用有源部件的二维位置传感器。 提供了四个MR元件，其中每个MR元件具有正交蛇形结构。 第一MR传感器由沿着第一轴沿径向相对的两个MR元件形成，并且第二MR传感器由沿着第二正交轴线沿径向相对的剩余的两个MR元件形成。 每个MR元件与另一个MR传感器的两个MR元件交错，使得每个MR传感器相对于另一个MR传感器是电独立的并且正交定向。 因此，由两个MR元件组成的一个MR传感器沿着第一轴感测位置，并且由另外两个MR元件构成的另一个MR传感器沿着与第一轴正交的第二轴感测位置。 MR元件的交错可以用除正交蛇形线以外的几何形状来实现。

公开(公告)号：US5492571A

公开(公告)日：1996-02-20

申请号：US140956

申请日：1993-10-25

申请人： Robert A. Frosch ,  Thomas A. Perry ,  John R. Bradley ,  Thaddeus Schroeder ,  Bruno P. B. Lequesne

发明人： Robert A. Frosch ,  Thomas A. Perry ,  John R. Bradley ,  Thaddeus Schroeder ,  Bruno P. B. Lequesne

IPC分类号： C21D1/04 ,  C21D1/09 ,  C21D1/34 ,  G01D5/249 ,  G01P3/487 ,  G06K1/12 ,  H01F1/03 ,  H01F1/057 ,  H02K1/27 ,  H02K15/03 ,  H01F1/032

CPC分类号： H02K15/03 ,  C21D1/04 ,  C21D1/34 ,  G01D5/249 ,  G01P3/487 ,  G06K1/125 ,  H01F1/0306 ,  H01F1/057 ,  H02K1/2733 ,  C21D1/09 ,  C21D2221/00 ,  Y10T29/49007

摘要： An article comprising first and second bodies of permanent magnet material, each of said first and second bodies consisting substantially of a substrate of permanent magnet material being magnetized substantially uniformly to a predetermined flux density in a range from zero flux to 100% flux saturation of the permanent magnet material; each of the first and second bodies also comprising a pattern of at least one affected volume in a surface of the body, wherein each affected volume has a magnetic flux density that varies from the substantially uniform predetermined flux density and wherein the first and second bodies are stacked and fixedly attached so that the pattern on each body aligns with the pattern on the other body, wherein at least one affected volume on the first body is aligned with at least one affected volume on the second body and wherein the aligned affected volumes comprise a pole detectable by a magnetic sensor.

摘要翻译： 一种包括永磁材料的第一和第二本体的制品，所述第一和第二主体中的每一个基本上由永久磁铁材料的基底组成，其基本均匀地磁化至预定的磁通密度，其范围为零通量至100％的磁通饱和度 永磁材料; 所述第一和第二主体中的每一个还包括在所述主体的表面中的至少一个受影响的体积的图案，其中每个受影响的体积具有从基本上均匀的预定通量密度变化的磁通密度，并且其中所述第一和第二主体是 堆叠并固定地附接，使得每个主体上的图案与另一个主体上的图案对准，其中第一主体上的至少一个受影响的体积与第二主体上的至少一个受影响的体积对准，并且其中对准的受影响体积包括 磁极可由磁传感器检测。

公开(公告)号：US5491633A

公开(公告)日：1996-02-13

申请号：US390916

申请日：1995-02-17

申请人： Rassem R. Henry ,  Bruno P. B. Lequesne ,  Thaddeus Schroeder

发明人： Rassem R. Henry ,  Bruno P. B. Lequesne ,  Thaddeus Schroeder

IPC分类号： B60G17/015 ,  B60G17/018 ,  G06F7/70 ,  F16H27/02 ,  G01B5/30

CPC分类号： B60G17/0182 ,  B60G17/0157 ,  B60G2202/42 ,  B60G2400/10 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/252 ,  B60G2400/41 ,  B60G2400/952 ,  B60G2401/172 ,  B60G2500/30 ,  B60G2800/012 ,  B60G2800/014 ,  Y10T74/18056 ,  Y10T74/18568 ,  Y10T74/18664 ,  Y10T74/18688 ,  Y10T74/18952 ,  Y10T74/18968 ,  Y10T74/19181 ,  Y10T74/20588

摘要： An apparatus comprising a rotating element, a rotary to linear converter, a linearly moving element that linearly extends and retracts when the rotating element rotates in first and second directions, a rotary sensor assembly, integrally constructed with the rotating element, for determining relative movement of the rotating element and for thereby determining relative movement of the linearly moving element, a linear sensor assembly, integrally constructed with the linearly moving element, for providing an absolute position signal each time that the linearly moving element extends or retracts to a predetermined position.

摘要翻译： 一种包括旋转元件，旋转到线性转换器的装置，当所述旋转元件沿第一和第二方向旋转时线性移动元件，所述直线移动元件线性地延伸和缩回;旋转传感器组件，其与所述旋转元件整体地构成，用于确定 旋转元件并且由此确定线性移动元件的一个线性传感器组件的一个整体构造的线性运动元件的相对运动，用于每当线性运动元件延伸或缩回到预定位置时提供绝对位置信号。

公开(公告)号：US5291133A

公开(公告)日：1994-03-01

申请号：US933536

申请日：1992-08-24

申请人： Kalyan P. Gokhale ,  Thaddeus Schroeder

发明人： Kalyan P. Gokhale ,  Thaddeus Schroeder

IPC分类号： G01D5/249 ,  G01P3/46 ,  G01P3/489 ,  G01B7/30 ,  G01R19/30 ,  H03M1/22

CPC分类号： G01D5/249 ,  G01D5/2497 ,  G01P3/46 ,  G01P3/489

摘要： A signal conditioning circuit which converts multiple analog signals received from an encoder into a multi-bit digital signal, corresponding to the angular position of a rotary object, which is independent of any common mode disturbances such as temperature, humidity, ambient light and aging. At any given time, at least one of the analog signals is at a maximum voltage and at least one of the analog signals is at a minimum voltage. At no time are all of the analog signals simultaneously at a maximum or simultaneously at a minimum. The signal conditioning circuit continuously detects the maximum and minimum values of the analog signals. A midpoint of the maximum and minimum values is determined and compared with the original analog signals. For all values of the analog signals greater than the midpoint value, a binary logic level of 1 is outputted. For all values of the analog signals less than the midpoint value, a binary logic level of 0 is outputted. There is one comparator and corresponding binary output for each analog signal. In combination, the comparators form the necessary multi-bit digital signal.

摘要翻译： 信号调理电路，其将从编码器接收的多个模拟信号转换为对应于旋转对象的角位置的多位数字信号，其独立于任何共模干扰，例如温度，湿度，环境光和老化。 在任何给定时间，模拟信号中的至少一个处于最大电压，并且至少一个模拟信号处于最小电压。 在任何时候，所有的模拟信号同时处于最大或同时处于最小值。 信号调理电路连续检测模拟信号的最大值和最小值。 确定最大值和最小值的中点，并将其与原始模拟信号进行比较。 对于大于中点值的模拟信号的所有值，输出二进制逻辑电平1。 对于小于中点值的模拟信号的所有值，输出二进制逻辑电平0。 每个模拟信号有一个比较器和相应的二进制输出。 结合起来，比较器形成必要的多位数字信号。

公开(公告)号：US5210493A

公开(公告)日：1993-05-11

申请号：US842938

申请日：1992-02-27

申请人： Thaddeus Schroeder ,  Chi H. Leung ,  Bruno P. B. Lequesne ,  Robert W. Ward

发明人： Thaddeus Schroeder ,  Chi H. Leung ,  Bruno P. B. Lequesne ,  Robert W. Ward

IPC分类号： G01R33/09 ,  H01L43/02

CPC分类号： G01R33/09 ,  H01L43/02 ,  Y10T29/49007 ,  Y10T29/49076

摘要： A semiconductor magnetoresistive sensor and a method for its assembly is specifically provided. The preferred assembly method of this invention is compatible with automated semiconductor chip placement and packaging technology, so as to alleviate the previous requirement that the semiconductor sensing element be separately packaged. The sensor leads are substantially embedded within a powdered metal permanent magnet body. An exposed terminal end of each lead is available for electrical and adhesive contact to a subsequently attached magnetoresistive semiconductor sensing element, using conventional semiconductor placement and packaging techniques. The powdered metal magnetic body is preferably formed by utilizing powder metal compaction techniques, wherein the powder metal is compacted around the interior electrical leads. The teachings of this invention may also be employed to form a variety of electrical sensors and devices, wherein the leads are substantially embedded within a metal core so as to produce a solid assembly. The embedded leads may have a variety of shapes, such as straight or coiled, may range in number from one to a plurality, and may have a variety of physical properties, such as magnetic or non-magnetic, depending on the desired application.

摘要翻译： 具体地提供半导体磁阻传感器及其组装方法。 本发明的优选组装方法与自动半导体芯片放置和封装技术相兼容，以便减轻半导体传感元件分开封装的先前要求。 传感器引线基本上嵌入粉末状金属永磁体内。 使用常规的半导体放置和封装技术，每个引线的暴露端子可用于与随后附接的磁阻半导体感测元件的电和粘合接触。 粉末状金属磁体优选通过利用粉末金属压实技术形成，其中粉末金属在内部电引线周围压实。 本发明的教导也可用于形成各种电传感器和装置，其中引线基本上嵌入在金属芯内以便产生固体组件。 嵌入式引线可以具有各种形状，例如直线或卷绕，其数量可以在一个至多个的范围内，并且可以具有各种物理性质，例如磁性或非磁性，这取决于所需的应用。