公开(公告)号：US06850139B1

公开(公告)日：2005-02-01

申请号：US09936087

申请日：2000-03-03

申请人： Fritz Dettmann ,  Uwe Loreit ,  Carsten Möller ,  Torsten Schönbach

发明人： Fritz Dettmann ,  Uwe Loreit ,  Carsten Möller ,  Torsten Schönbach

IPC分类号： G01D5/245 ,  H01F13/00

CPC分类号： H01F13/003

摘要： The invention relates to a system for pulse magnetizing high-precision magnetic scales. The system comprises a shaped current conductor (1) and a pulse current source (2) that is composed of a capacitor bank (3), a transfer switch (4) and a control unit (5). The compact set-up of the system is the prerequisite for a power circuit that has such a low resistance that the required high pulse currents are obtained at supply voltages of below 60 V. The transfer switch is an H bridge with four switches (7) that contain equal numbers of MOS transistors connected in parallel. The short pulse times that are achieved using the MOS transistors allow the use of shaped current conductors with which magnetized areas can be produced with a very high precision. The inventive system provides a means for saving components, electric power and time by a factor of up to 100.

摘要翻译： 本发明涉及一种脉冲磁化高精度磁标度的系统。 该系统包括由电容器组（3），转换开关（4）和控制单元（5）组成的成形电流导体（1）和脉冲电流源（2）。 系统的紧凑设置是具有如此低电阻的电源电路的先决条件，在低于60V的电源电压下获得所需的高脉冲电流。转换开关是具有四个开关（7）的H桥， 其包含相等数量的并联的MOS晶体管。 使用MOS晶体管实现的短脉冲时间允许使用可以以非常高的精度制造磁化区域的成形电流导体。 本发明的系统提供了将部件，电力和时间节省高达100倍的装置。

公开(公告)号：US09140766B2

公开(公告)日：2015-09-22

申请号：US13532214

申请日：2012-06-25

申请人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

发明人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

IPC分类号： G01R33/02 ,  G01R33/09

CPC分类号： G01R33/09

摘要： A magneto-resistive sensor for measuring a magnetic field based on an anisotropic magneto-resistive (AMR) effect or a gigantic magneto-resistive (GMR) effect comprises a substrate and a plurality of resistors that include first magneto-resistive layer strips arranged in form of a bridge circuit on the substrate. The plurality of resistors have a resistance value that depends on a magnetic field strength. At least one second layer strip is connected in series with the first magneto-resistive layer strips of at least one of the plurality of resistors. The first magneto-resistive layer strips have a resistance that depends on temperature according to a first positive temperature coefficient; and the at least one second layer strip has a resistance that depends on temperature according to a second temperature coefficient different from the first temperature coefficient, the second temperature coefficient being non-negative.

摘要翻译： 用于基于各向异性磁阻（AMR）效应或巨大的磁阻（GMR）效应来测量磁场的磁阻传感器包括衬底和多个电阻器，其包括以形式布置的第一磁阻层条 的基板上的桥接电路。 多个电阻器具有取决于磁场强度的电阻值。 至少一个第二层带与多个电阻器中的至少一个电阻器的第一磁阻层条串联连接。 第一磁阻层条具有根据第一正温度系数取决于温度的电阻; 并且所述至少一个第二层条具有根据与所述第一温度系数不同的第二温度系数取决于温度的电阻，所述第二温度系数是非负的。

公开(公告)号：US08164332B2

公开(公告)日：2012-04-24

申请号：US12961628

申请日：2010-12-07

申请人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

发明人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

IPC分类号： G01R33/12

CPC分类号： G01D5/145

摘要： A magneto-resistive resistor for use in sensors for determining alignment of the sensor relative to a homogeneous magnetic field include an anisotropic magnetoresistive (AMR) strip having a longitudinal extent and a first and second edge along the longitudinal extent. The first and second edge have a shape along the longitudinal extent such that the direction of current flowing through the strip varies continuously along the longitudinal extent of the strip. The shape of the first and second edges produce a resistance determining angle with respect to the homogeneous magnetic field, the angle varying throughout the length of the strip and filtering out harmonics. A sensor bridge comprising at least one AMR resistor pair, each resistor electrically connected to the other resistor, a positive input contact and a negative input, and an output voltage tap electrically connected between the resistors in each resistor pair.

摘要翻译： 用于确定传感器相对于均匀磁场的对准的传感器的磁阻电阻器包括具有纵向延伸的各向异性磁阻（AMR）条带以及沿纵向范围的第一和第二边缘。 第一边缘和第二边缘具有沿着纵向范围的形状，使得流过条带的电流方向沿条的纵向范围连续变化。 第一和第二边缘的形状产生相对于均匀磁场的电阻确定角度，该角度在条带的整个长度上变化并滤除谐波。 传感器桥，包括至少一个AMR电阻器对，每个电阻器电连接到另一个电阻器，正输入触点和负输入端，以及电连接在每个电阻器对中的电阻器之间的输出电压抽头。

公开(公告)号：US20100141244A1

公开(公告)日：2010-06-10

申请号：US12528010

申请日：2008-02-21

申请人： Axel Bartos ,  Fritz Dettmann ,  Armin Meisenberg

发明人： Axel Bartos ,  Fritz Dettmann ,  Armin Meisenberg

IPC分类号： G01B7/30

CPC分类号： G01D5/12

摘要： Disclosed are absolute measuring systems comprising measuring rods that are composed of groups of at least two magnetic segments. The magnetic segments of at least one group have the same length in the direction of measurement while the magnetic segments of the different groups have different lengths. For arrangements encompassing more than two sensors on the single-track measuring rods, multistage phase difference processes are disclosed which result in high resolutions and accurate measurements while allowing for great measured lengths and, when anisotropic magnetoresistive sensors are used, for example, an unambiguous angle measurement range of 360°. FIG. 6a best represents the essence of the invention.

摘要翻译： 公开了包括由至少两个磁段的组成的测量棒的绝对测量系统。 至少一组的磁段在测量方向上具有相同的长度，而不同组的磁段具有不同的长度。 对于在单轨测量棒上包含多于两个传感器的布置，公开了多级相位差过程，其产生高分辨率和准确的测量，同时允许大的测量长度，并且当使用各向异性磁阻传感器时，例如具有明确的角度 测量范围360°。 图。 6a最好代表了本发明的本质。

公开(公告)号：US06545463B1

公开(公告)日：2003-04-08

申请号：US09936886

申请日：2001-09-10

申请人： Fritz Dettmann ,  Uwe Loreit ,  Heike Bischoff ,  Hilmar Dohles

发明人： Fritz Dettmann ,  Uwe Loreit ,  Heike Bischoff ,  Hilmar Dohles

IPC分类号： G01B714

CPC分类号： G01D5/145 ,  G01D5/2492

摘要： In at least one measuring rod of the length measurement system the direction of magnetization lies in the plane of its cross-section which is perpendicular to the direction of measurement and forms a magnetization pattern. In the simplest case the magnetization of the cross-section is homogeneous. As one advances in the direction of measurement the magnetization pattern is increasingly rotated in relation to the starting end of the measuring rod. This magnetization results in a magnetic field whose direction is also continuously rotated as one advances in the direction of measurement. By means of at least one magnetic field sensor which responds to the direction of the magnetic field the prevailing field angle for each position is determined and can be clearly assigned to the position for a multitude of different variants of the length measurement system.

摘要翻译： 在长度测量系统的至少一个测量棒中，磁化方向位于其垂直于测量方向的横截面的平面中并形成磁化模式。 在最简单的情况下，横截面的磁化是均匀的。 随着测量方向的进展，磁化模式相对于测量杆的起始端逐渐旋转。 这种磁化导致当测量方向前进时其方向也连续旋转的磁场。 通过响应于磁场方向的至少一个磁场传感器，确定每个位置的主要场角，并且可以将其明确地分配给长度测量系统的多个不同变体的位置。

公开(公告)号：US06433545B1

公开(公告)日：2002-08-13

申请号：US09744570

申请日：2001-01-26

申请人： Jürgen Kunze ,  Gunter Schepp ,  Fritz Dettmann ,  Uwe Loreit

发明人： Jürgen Kunze ,  Gunter Schepp ,  Fritz Dettmann ,  Uwe Loreit

IPC分类号： G01B714

CPC分类号： G01R33/096 ,  G01R33/09

摘要： The invention relates to a method for evaluating signals while eliminating an interference signal on magnetoresistive sensor elements which is preferably proportional to the zero offset. The sensor elements can form a sensor element array such as a sensor bridge. According to the invention, the direction of magnetization of the sensor elements is modulated or shifted by applying a magnetic pulse field of a modulated or variable direction, and the output signals of the sensor elements or of the sensor element array are fed to a differential amplifier. Due to the modulation or shift of the operating voltage of the sensor bridge, the modulation or shift resulting at the same time as the magnetization of the sensor elements, a signal often arises which includes a direct component that is proportional to the magnetic field to be measured, and has an alternating component that is proportional to the offset voltage of the sensor element array. The latter is minimized by a feedback or is adjusted to zero. The bandwidth, with which the direct voltage that is proportional to the magnetic field to be measured can follow changes of the input signal, is greater in magnitude than the magnetization frequency of the sensor elements.

摘要翻译： 本发明涉及一种用于评估信号的方法，同时消除磁阻传感器元件上的干扰信号，其优选地与零偏移成比例。 传感器元件可以形成诸如传感器桥的传感器元件阵列。 根据本发明，通过施加调制方向或可变方向的磁脉冲来调制或偏移传感器元件的磁化方向，并将传感器元件或传感器元件阵列的输出信号馈送到差分放大器 。 由于传感器桥的工作电压的调制或移位，与传感器元件的磁化同时产生的调制或偏移通常产生，其包括与磁场成比例的直接分量 并且具有与传感器元件阵列的偏移电压成比例的交替分量。 后者通过反馈最小化或调整为零。 与被测量的磁场成比例的直流电压可以跟随输入信号的变化的带宽在幅度上大于传感器元件的磁化频率。

公开(公告)号：US08207732B2

公开(公告)日：2012-06-26

申请号：US10572009

申请日：2004-09-13

申请人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

发明人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

IPC分类号： G01R33/02

CPC分类号： G01R33/09

摘要： Magnetoresistive sensors based on the AMR or GMR effect exhibit substantially enlarged linear characteristic curve regions as a result of the fact that their resistances are composed of magnetoresistive layer strips of differing anisotropic forms. Differing anisotropic forms can be achieved by different strip widths, strip thicknesses, strip intervals or strip materials. The temperature compensation for the output voltage of the magnetoresistive sensors, at least at one point on the characteristic curve, is achieved by the series connection of an additional layer strip with a temperature coefficient that differs from that of the magnetoresistive material to at least one magnetoresistive resistance of the sensor.

摘要翻译： 由于它们的电阻由不同的各向异性形式的磁阻层条组成，所以基于AMR或GMR效应的磁阻传感器表现出基本上放大的线性特性曲线区域。 不同的各向异性形式可以通过不同的带宽，条带厚度，条带间隔或条带材料来实现。 至少在特性曲线上的一点，磁阻传感器的输出电压的温度补偿是通过将不同于磁阻材料的温度系数与至少一个磁阻的串联连接来实现的 传感器的电阻。

公开(公告)号：US07847542B2

公开(公告)日：2010-12-07

申请号：US10547431

申请日：2004-02-24

申请人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

发明人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

IPC分类号： G01R33/12

CPC分类号： G01D5/145

摘要： Magnetoresistive sensors which use the AMR or the GMR effect and indicate the direction of the homogeneous magnetic field of a rotatable permanent magnet in the angle measurement or the position of the sensor with respect to a scale, which is magnetized periodically in an alternating direction, for the position measurement, and in which the angle or position value is obtained from the quotient of the output signals from two bridges or half bridges with the aid of arctan interpolation, allow small measurement errors if the output signals have small harmonic components and hysteresis areas. In arrangements according to the invention, this is achieved by the resistors being composed of strips and by continuously varying the resistance-determining angle along the strip longitudinal extent for each constant magnetic field acting on the strips. The resistance-determining angle is between the current and magnetization direction for AMR sensors and is between the magnetization directions of two layer components for GMR sensors.

摘要翻译： 使用AMR或GMR效应的磁阻传感器在角度测量中指示可旋转永磁体的均匀磁场的方向或传感器相对于在交替方向周期性磁化的刻度的位置，用于 位置测量，并且借助于Arctan插值从两个桥或半桥的输出信号的商获得角度或位置值，如果输出信号具有小的谐波分量和滞后区域，则允许小的测量误差。 在根据本发明的装置中，这是通过电阻器由条形成的并且通过对作用在条带上的每个恒定磁场沿着条带纵向延伸而连续改变电阻确定角来实现的。 电阻确定角度在AMR传感器的电流和磁化方向之间，并且在用于GMR传感器的两个层组件的磁化方向之间。

公开(公告)号：US08415946B2

公开(公告)日：2013-04-09

申请号：US12528010

申请日：2008-02-21

申请人： Axel Bartos ,  Fritz Dettmann ,  Armin Meisenberg

发明人： Axel Bartos ,  Fritz Dettmann ,  Armin Meisenberg

IPC分类号： G01B7/14

CPC分类号： G01D5/12

摘要： Disclosed are absolute measuring systems comprising measuring rods that are composed of groups of at least two magnetic segments. The magnetic segments of at least one group have the same length in the direction of measurement while the magnetic segments of the different groups have different lengths. For arrangements encompassing more than two sensors on the single-track measuring rods, multistage phase difference processes are disclosed which result in high resolutions and accurate measurements while allowing for great measured lengths and, when anisotropic magnetoresistive sensors are used, for example, an unambiguous angle measurement range of 360°. FIG. 6a best represents the essence of the invention.

摘要翻译： 公开了包括由至少两个磁段的组成的测量棒的绝对测量系统。 至少一组的磁段在测量方向上具有相同的长度，而不同组的磁段具有不同的长度。 对于在单轨测量棒上包含多于两个传感器的布置，公开了多级相位差过程，其产生高分辨率和准确的测量，同时允许大的测量长度，并且当使用各向异性磁阻传感器时，例如具有明确的角度 测量范围360°。 图。 6a最好代表了本发明的本质。

公开(公告)号：US20120262164A1

公开(公告)日：2012-10-18

申请号：US13532214

申请日：2012-06-25

申请人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

发明人： Axel Bartos ,  Armin Meisenberg ,  Fritz Dettmann

IPC分类号： G01R33/09

CPC分类号： G01R33/09

摘要： Magneto-resistive sensors based on the AMR or GMR effect exhibit substantially enlarged linear characteristic curve regions as a result of the fact that their resistances are composed of magneto-resistive layer strips of differing anisotropic forms. Differing anisotropic forms can be achieved by different strip widths, strip thicknesses, strip intervals or strip materials. The temperature compensation for the output voltage of the magneto-resistive sensors, at least at one point on the characteristic curve, is achieved by the series connection of an additional layer strip with a temperature coefficient that differs from that of the magneto-resistive material to at least one magneto-resistive resistance of the sensor.

摘要翻译： 基于AMR或GMR效应的磁阻传感器由于其电阻由不同各向异性形式的磁阻层条组成的事实而呈现出基本上扩大的线性特征曲线区域。 不同的各向异性形式可以通过不同的带宽，条带厚度，条带间隔或条带材料来实现。 至少在特性曲线上的一个点处，磁阻传感器的输出电压的温度补偿是通过将附加层条带与不同于磁阻材料的温度系数的串联连接来实现的 传感器的至少一个磁阻电阻。