公开(公告)号：US4217783A

公开(公告)日：1980-08-19

申请号：US12376

申请日：1979-02-15

申请人： Susumu Ito ,  Morimasa Nagao ,  Toshio Yamagata ,  Nobuyuki Hayama

发明人： Susumu Ito ,  Morimasa Nagao ,  Toshio Yamagata ,  Nobuyuki Hayama

IPC分类号： G01L9/00 ,  G01L9/16 ,  G01L9/04

CPC分类号： G01L9/16 ,  G01L9/0051

摘要： A pressure sensor comprises essentially magnetoresistive elements formed on a diaphragm serving as a stress magnifier. The diaphragm may be made, for example, of glass in a thickness of 0.5 millimeter, and the magnetoresistive elements can be formed thereon in any desired pattern of thin stripes by ordinary thin-film techniques. Such sensor elements can be mass produced, e.g., by vapor deposition and etching on a large sheet of diaphragm material and cutting into chips of desired shape and size.

摘要翻译： 压力传感器包括基本上形成在用作应力放大器的隔膜上的磁阻元件。 隔膜可以由例如0.5mm厚的玻璃制成，并且可以通过普通薄膜技术以任何所需的薄条纹图案在其上形成磁阻元件。 这样的传感器元件可以例如通过在大片隔膜材料上的气相沉积和蚀刻而大量生产并切割成所需形状和尺寸的芯片。

公开(公告)号：US4319188A

公开(公告)日：1982-03-09

申请号：US219759

申请日：1980-12-24

申请人： Susumu Ito ,  Morimasa Nagao ,  Kaoru Toki ,  Keizo Morita

发明人： Susumu Ito ,  Morimasa Nagao ,  Kaoru Toki ,  Keizo Morita

IPC分类号： G01B7/00 ,  G01B7/30 ,  G01D5/14 ,  G01D5/16 ,  G01D5/244 ,  G01D5/245 ,  G01P3/487 ,  H03M1/00 ,  G01P3/48

CPC分类号： G01D5/145 ,  G01D5/24404 ,  G01D5/2457 ,  G01P3/487 ,  H03M1/30

摘要： A magnetic rotary encoder for detecting incremental angular displacement, angular velocity and rotating direction using magneto-resistors is disclosed. A drum, disk or cupshaped rotary member is attachable to a rotatable shaft. A magnetic medium is provided on a surface of the rotary member and is divided at a pitch p into a plurality of magnetic sections each of which has a magnetic signal recorded. The magnetic medium produces an alternating magnetic field as the rotary member revolves. Alternatively, a plurality of permanent magnets are provided on the surface of the rotary member to produce the alternating magnetic field of the rotary member revolves. A magnetic field detector includes at least one magneto-resistor having a stripe-like configuration with width D. The magneto-resistor is located in the vicinity of the rotary member so as to be spaced from the magnetic medium or the permanent magnets by equal to or less than p at its nearest portion and by equal to or less than 20p at its furthest portion. The width D is selected so as not to be in excess of 20p but to be equal or less than p .sec .phi., where .phi. is an angle defined by the nearest surfaces of the magneto-resistor and the magnetic medium or permanent magnets. The magneto-resistor is responsive to the alternating magnetic field to generate an analog signal representative of its electrical resistance change corresponding to the increment of the rotational angle of the rotary member. A rotary condition detector is electrically connected to the magnetic field detector to receive the analog signal and produce signals indicative of the rotating conditions of the rotatable shaft.

摘要翻译： 公开了一种用于使用磁阻电阻检测增量角位移，角速度和旋转方向的磁旋转编码器。 鼓，盘或杯形旋转构件可附接到可旋转的轴。 磁性介质设置在旋转构件的表面上，并以间距p分成多个磁区，每个磁区具有记录的磁信号。 当旋转构件旋转时，磁介质产生交变磁场。 或者，在旋转构件的表面上设置多个永磁体，以产生旋转构件的交变磁场旋转。 磁场检测器包括至少一个具有宽度为D的条状结构的磁阻电阻器。磁电阻器位于旋转部件附近，以便与磁介质或永磁体间隔相等 或小于其最近部分处的p，并且在其最远部分等于或小于20p。 宽度D被选择为不超过20p但是等于或小于p.sec phi，其中phi是由磁电阻器和磁介质或永磁体的最近表面限定的角度。 磁阻电阻响应于交变磁场以产生代表其电阻变化的模拟信号，其对应于旋转构件的旋转角度的增量。 旋转状态检测器电连接到磁场检测器以接收模拟信号并产生指示可旋转轴的旋转状态的信号。

公开(公告)号：US4283679A

公开(公告)日：1981-08-11

申请号：US31094

申请日：1979-04-18

申请人： Susmu Ito ,  Morimasa Nagao

发明人： Susmu Ito ,  Morimasa Nagao

IPC分类号： G01P13/02 ,  G01P13/04 ,  G01P3/52 ,  G01P13/00

CPC分类号： G01P13/04

摘要： A rotational direction detection device is disclosed which has a single permanent magnet rotatable in response to the rotation of a rotary shaft. A magnetic field sensor is composed of a plurality of magnetic field detecting elements responsive to a rotating magnetic field produced by the rotation of the permanent magnet for generating an output representative of the rotation of the rotary shaft. The magnetic field detecting elements are arranged so that signals developed by at least two such elements differ in phase by a phase angle of other than 0 degree and 180 degrees. A rotary condition detector is responsive to the output of the magnetic field sensor for determining the rotational direction of the rotary shaft.

摘要翻译： 公开了一种旋转方向检测装置，其具有响应于旋转轴的旋转而可旋转的单个永磁体。 磁场传感器由多个磁场检测元件组成，响应于由永磁体的旋转产生的旋转磁场，用于产生表示旋转轴的旋转的输出。 磁场检测元件布置成使得由至少两个这样的元件展开的信号的相位相差除0度和180度以外的相位角。 旋转状态检测器响应于磁场传感器的输出来确定旋转轴的旋转方向。