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公开(公告)号：US3949345A
公开(公告)日：1976-04-06
申请号：US523339
申请日：1974-11-13
申请人： Yoshimi Makino , Akihisa Narimatsu , Masao Horie
发明人： Yoshimi Makino , Akihisa Narimatsu , Masao Horie
IPC分类号： G01D5/245 , G01B7/00 , G01D5/14 , G01D5/16 , G01D5/243 , G01R33/09 , G11B5/39 , H01L43/08 , H01C7/16
CPC分类号： G01D5/147 , G01R33/09 , G01R33/096 , H01L43/08
摘要： A multiple magnetoresistance element includes a first stripe group and a second stripe group which comprise a plurality of stripes electrically connected in series with each other and spaced from each other by a predetermined distance. The stripes are made of ferromagnetic material having an anisotropic effect of magnetoresistance and have a plurality of main current path portions.The first stripe group and the second stripe group are electrically connected to each other and spaced from each other by a predetermined distance. An output terminal is connected to a connecting point of the first stripe group and the second stripe group. Current supply terminals are connected to ends of the first stripe group and the second stripe group.
摘要翻译： 多重磁阻元件包括第一条带组和第二条纹组，其包括彼此串联电连接预定距离的彼此串联电连接的多个条纹。 条纹由具有磁阻的各向异性效应的铁磁材料制成，并且具有多个主电流路径部分。
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公开(公告)号：US4558312A
公开(公告)日：1985-12-10
申请号：US471680
申请日：1983-03-03
CPC分类号： B23Q35/32 , G01B7/002 , G01B7/012 , Y10T29/49762 , Y10T29/49764 , Y10T408/21 , Y10T409/308176 , Y10T74/20636
摘要： An apparatus for use in determining the location of a surface of a solid object such as that being machined by a machine tool includes a stylus having an electrically conductive end that is supported by two support members, which are disposed in pressure contact with each other by means of a spring or other bias, one of the two support members being formed to have a spherical contact surface that is a portion of an imaginary sphere concentric with the contact electrode, the other of the two support members being formed so that upon contacting the spherical surface the area of contact is substantially line contact. Either alternatively or in addition to the detection of a electrically conductive surface with the contact electrode, the support members may be provided with electrically conductive surfaces so that upon the contact of the electrode contact with a workpiece the electrically conductive surfaces are moved out of electrical contact, thereby providing an additional indication of the position of the surface to be determined.
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公开(公告)号：US4663588A
公开(公告)日：1987-05-05
申请号：US634791
申请日：1984-07-26
摘要： A detector head for use in a measuring device includes a plurality of constituent measuring elements arranged in at least two blocks, each block producing an output signal of equal amplitude, and a phase shifter provided to shift the relative phases of the output signals of the blocks to have a predetermined relative phase difference, whereby selected higher-order harmonic components are cancelled from the resultant signal formed by summing the signals produced by the separate blocks of constituent elements.
摘要翻译： 用于测量装置的检测器头包括布置在至少两个块中的多个构成测量元件，每个块产生相等振幅的输出信号，以及移相器，用于移位块的输出信号的相对相位 具有预定的相对相位差，从而通过对由分离的组成元件块产生的信号进行求和而形成的结果信号来消除所选择的高阶谐波分量。
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公开(公告)号：US4523381A
公开(公告)日：1985-06-18
申请号：US434576
申请日：1982-10-15
申请人： Akihisa Narimatsu , Hiroyuki Ohkubo
发明人： Akihisa Narimatsu , Hiroyuki Ohkubo
摘要： A scaling device employs a first, outer cylinder, a longitudinal scale having detectable indicia thereon, and a second cylinder of lesser diameter than the first cylinder but of greater diameter than the radial extent of the scale. The cylinders and the longitudinal scale are disposed coaxially, with the scale affixed at one end thereof to an end cover plate in one end of the first cylinder. The second cylinder is journalled in a bearing in an end cover plate in the other end of the first cylinder for axial movement relative to the first cylinder over the longitudinal scale. A scale detector element is disposed at one end of the second cylinder to detect indicia on the scale and to generate scale signals in response to longitudinal relative displacement of the first and second cylinders. A third cylinder affixed to and disposed within the second cylinder defines an annulus between the second and third cylinders through which leads from the detector element can extend. A fitting can be provided for admitting pressurized air to the first cylinder. A spring and bearing arrangement can be used for centering the longitudinal scale relative to the cylinders.
摘要翻译： 缩放装置采用第一外筒，其上具有可检测标记的纵向标尺和比第一圆柱体更小直径但比标尺的径向尺寸更大直径的第二圆柱体。 圆柱体和纵向刻度同轴地设置，标尺的一端固定在第一圆筒的一端的端盖板上。 第二圆柱体在第一圆柱体的另一端的端盖板中的轴承中轴颈，用于相对于第一圆柱体在纵向尺度上轴向移动。 尺度检测器元件设置在第二气缸的一端，以检测刻度上的标记，并且响应于第一和第二气缸的纵向相对位移产生刻度信号。 固定并设置在第二气缸内的第三气缸限定了第二和第三气缸之间的环形空间，来自检测器元件的引线可通过该环形空间延伸。 可以提供用于将加压空气接纳到第一气缸的配件。 可以使用弹簧和轴承布置来使纵向刻度相对于圆柱体居中。
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5.发明授权
公开(公告)号：US4429276A
公开(公告)日：1984-01-31
申请号：US368504
申请日：1982-04-15
申请人： Akihisa Narimatsu , Hiroyuki Ohkubo
发明人： Akihisa Narimatsu , Hiroyuki Ohkubo
CPC分类号： G01D5/145 , G01D5/2451
摘要： A magnetoresistive displacement sensing transducer employs a plurality of sensing elements consisting of magnetically biased magnetoresistive stripes. Each sensing element is operative to produce a signal in response to linear or rotational displacement with respect to a magnetic grating. The phases of the signals from the plurality of sensing elements are relatively displaced to permit determining direction of displacement and to increase accuracy through interpolation. A signal processing circuit uses the signals from the sensing elements and optionally their sums and differences to drive a reversible counter which is thereby updated to retain a value corresponding to the position of the transducer or the magnetic grating.
摘要翻译： 磁阻位移感测传感器采用由磁偏置磁阻条纹组成的多个感测元件。 每个感测元件可操作以响应于相对于磁栅的线性或旋转位移而产生信号。 来自多个感测元件的信号的相位被相对移位以允许确定位移方向并且通过插值来增加精度。 信号处理电路使用来自感测元件的信号和可选的它们的和和差来驱动可逆计数器，由此更新该计数器以保持对应于换能器或磁栅的位置的值。
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公开(公告)号：US4361805A
公开(公告)日：1982-11-30
申请号：US134543
申请日：1980-03-27
申请人： Akihisa Narimatsu , Hiroyuki Ohkubo
发明人： Akihisa Narimatsu , Hiroyuki Ohkubo
CPC分类号： G01D5/145 , G01F23/68 , G01F23/72 , G01R33/09 , G01R33/096
摘要： A magnetic sensor device utilizes the principle that the resistance of anisotropic magnetoresistive material is different in the case where the direction of current flowing in the material and the direction of a saturating magnetic field are parallel from the case where the direction of current and the direction of the saturating magnetic field are perpendicular to each other. The sensor device may be used to sense displacement and includes a ferromagnetic magnetoresistive element having at least one current path portion, a source applying electric current to each current path portion, and a magnetic field source producing first and second magnetic fields, occurring in first and second regions, and lying in first and second different mutually intersecting directions, respectively, with respect to the current path portion. The magnetoresistive element and the magnetic field source are displaceable in a predetermined direction relative to one another so that the relative amounts of the current path portion that are influenced by the first and second magnetic fields vary in accordance with such displacement. The magnetoresistive element can be connected to a constant current source, so that the voltage across the element indicates displacement. Alternatively, the magnetoresistive element can be formed of two series-connected current path portions, with a constant voltage source connected across both portions, so that the voltage appearing at the junction of the two current path portions indicates displacement.
摘要翻译： 磁传感器装置利用这样的原理，即在材料中流动的电流方向与饱和磁场的方向平行的情况下，各向异性磁阻材料的电阻不同于电流方向和 饱和磁场彼此垂直。 传感器装置可以用于检测位移，并且包括具有至少一个电流通路部分的铁磁磁阻元件，向每个电流通路部分施加电流的源和产生第一和第二磁场的磁场源， 并且相对于电流路径部分分别位于第一和第二不同的相交方向上。 磁阻元件和磁场源可相对于彼此沿预定方向移位，使得受第一和第二磁场影响的电流路径部分的相对量根据这种位移而变化。 磁阻元件可以连接到恒流源，使得元件两端的电压表示位移。 或者，磁阻元件可以由两个串联连接的电流路径部分形成，其中恒定电压源连接在两个部分上，使得出现在两个电流路径部分的结处的电压表示位移。
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公开(公告)号：US4484391A
公开(公告)日：1984-11-27
申请号：US434575
申请日：1982-10-15
申请人： Akihisa Narimatsu
发明人： Akihisa Narimatsu
CPC分类号： G01D11/245 , G01B7/001
摘要： A magnetic scaling device has a housing formed at least partly of non-magnetic material, such as aluminum or stainless steel. A magnetic scale is disposed on the housing, and a reading head is disposed within the housing and provides an output signal corresponding to relative linear displacement of the reading head and the magnetic scale. In addition, a reference magnetizing body can be disposed on the housing, and a reference magnetic detector can be disposed within the housing to provide a reference signal in response to linear displacement of the detector to a predetermined position corresponding to the position of the reference magnetizing body. At least one of the magnetic scale and the reference magnetizing body is disposed on the exterior of the housing on a non-magnetic portion thereof.
摘要翻译： 磁性定标器具有至少部分由非磁性材料形成的壳体，例如铝或不锈钢。 磁性秤布置在壳体上，并且读取头设置在壳体内，并且提供对应于读取头和磁标尺的相对线性位移的输出信号。 此外，参考磁化体可以设置在壳体上，并且参考磁性检测器可以设置在壳体内以响应于检测器到对应于参考磁化的位置的预定位置的线性位移而提供参考信号 身体。 磁性秤和参考磁化体中的至少一个在其非磁性部分上设置在外壳的外部。
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8.发明授权Displacement detector having first and second magnetoresistive elements with a bias field at 45.degree. to each element 失效位移检测器具有第一和第二磁阻元件，每个元件具有45度的偏置场
公开(公告)号：US4401944A
公开(公告)日：1983-08-30
申请号：US237115
申请日：1981-02-23
申请人： Akihisa Narimatsu , Hiroyuki Ohkubo
发明人： Akihisa Narimatsu , Hiroyuki Ohkubo
摘要： The magnetic field sensing apparatus includes first and second magnetoresistive elements having respective angularly disposed current path portions through which a bias current flows and to which a bias magnetic field is supplied. An external magnetic signal field is supplied from a magnetic source, and the magnetoresistive elements are relatively displaceable with respect to this source. The bias field is supplied at an angle of approximately 45.degree. with respect to the direction in which the bias current flows in each current path; and the source of external magnetic field generates a signal field whose polarity gradually decreases and then changes over to an opposite polarity at a boundary region. This change in the signal field is sensed by the magnetic sensor as it is relatively displaced, thereby producing an output signal that varies substantially linearly with this displacement over a predetermined range on both sides of the boundary region.
摘要翻译： 磁场感测装置包括第一和第二磁阻元件，其具有各自的角度设置的电流通路部分，偏置电流通过该电流通路部分流过偏置磁场。 从磁源提供外部磁信号场，并且磁阻元件相对于该源可相对移位。 相对于偏置电流在每个电流路径中流动的方向以大约45°的角度提供偏置场; 并且外部磁场源产生极性逐渐减小的信号场，然后在边界区域转变成相反的极性。 当磁传感器被相对移位时，信号场中的这种变化被磁传感器检测到，从而产生一个输出信号，该输出信号在边界区两侧的预定范围内以这种位移大致线性地变化。
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