公开(公告)号：US5923165A

公开(公告)日：1999-07-13

申请号：US848491

申请日：1997-05-08

申请人： Hiromitsu Horita ,  Koichi Kawakami ,  Noriaki Kazama ,  Tsuneo Suzuki ,  Shinichi Kojima

发明人： Hiromitsu Horita ,  Koichi Kawakami ,  Noriaki Kazama ,  Tsuneo Suzuki ,  Shinichi Kojima

IPC分类号： A41H43/00 ,  D06H3/14 ,  G01R33/02 ,  G01V3/08 ,  G01N27/72 ,  G01R33/12 ,  G01V3/00

CPC分类号： G01V3/08

摘要： Disclosed are a method and apparatus for detection of a magnetic substance erroneously included in a non-magnetic product. The non-magnetic product such as a sewn product is passed through a high magnetic field in which a magnetic field is applied to the product. The residual magnetization of a magnetic substance such as a broken needle mingled in the product is detected by a sensing unit and a signal of detection is transmitted to a measuring unit to measure the magnitude of detected residual magnetization. The presence or absence of the magnetic substance in the product is determined by a control unit based on the output from the measuring unit. Alternatively, a magnetic field may be preparatorily applied to a magnetic substance having the possibility of being mingled in the non-magnetic product thereby causing the magnetic substance to assume a state of possessing residual magnetization.

摘要翻译： 公开了用于检测非磁性产品中错误地包含的磁性物质的方法和装置。 诸如缝合产品的非磁性产品通过其中向产品施加磁场的高磁场。 通过感测单元检测诸如产品中混合的断针的磁性物质的残余磁化，并将检测信号传输到测量单元以测量检测到的剩余磁化强度。 产品中磁性物质的存在或不存在由控制单元基于测量单元的输出确定。 或者，可以将磁场预先施加到具有可能性混入非磁性产品中的磁性物质，从而使磁性物质呈现具有剩余磁化强度的状态。

公开(公告)号：US06181036B2

公开(公告)日：2001-01-30

申请号：US09342250

申请日：1999-06-29

申请人： Noriaki Kazama ,  Tetsuya Katsumi ,  Hideki Takeda ,  Yoshinori Miura

发明人： Noriaki Kazama ,  Tetsuya Katsumi ,  Hideki Takeda ,  Yoshinori Miura

IPC分类号： H02K1100

CPC分类号： G01D5/145 ,  H02K29/08

摘要： A detector for the rotational angle of a motor and a small brushless or stepping motor having the detector built therein are disclosed. A sensor probe of the detector is provided with a wire configuration comprising a giant magnetoresistive element (sensor element) enabled to read a change in magnetic field up to at least 10 kOe, a first sensor lead and a second sensor lead connected one each to the opposite terminals of the magnetoresistive element, and an insulating layer interposed between the two sensor leads. The sensor probe of the detector is disposed inside a motor housing as approximated closely to the magnetic teeth of a rotor of the motor. The giant magnetoresistive element is formed of a magnetic particle dispersion type giant magnetoresistive material, an artificial lattice type giant magnetoresistive material, or a colossal magnetoresistive material.

公开(公告)号：US06285101B1

公开(公告)日：2001-09-04

申请号：US09648747

申请日：2000-08-28

申请人： Noriaki Kazama ,  Tetsuya Katsumi ,  Hideki Takeda ,  Yoshinori Miura

发明人： Noriaki Kazama ,  Tetsuya Katsumi ,  Hideki Takeda ,  Yoshinori Miura

IPC分类号： H02K1100

CPC分类号： G01D5/145 ,  H02K29/08

摘要： A detector for the rotational angle of a motor and a small brushless or stepping motor having the detector built therein are disclosed. A sensor probe of the detector is provided with a wire configuration comprising a giant magnetoresistive element (sensor element) enabled to read a change in magnetic field up to at least 10 kOe, a first sensor lead and a second sensor lead connected one each to the opposite terminals of the magnetoresistive element, and an insulating layer interposed between the two sensor leads. The sensor probe of the detector is disposed inside a motor housing as approximated closely to the magnetic teeth of a rotor of the motor. The giant magnetoresistive element is formed of a magnetic particle dispersion type giant magnetoresistive material, an artificial lattice type giant magnetoresistive material, or a colossal magnetoresistive material.

摘要翻译： 公开了一种用于电机旋转角度的检测器以及内置检测器的小型无刷或步进电机。 检测器的传感器探针设置有导线配置，其包括能够读取高达至少10kOe的磁场变化的巨磁阻元件（传感器元件），第一传感器引线和第二传感器引线，每个至少连接到 磁阻元件的相对端子和介于两个传感器引线之间的绝缘层。 检测器的传感器探头设置在马达壳体内部，与马达的转子的磁齿近似近似。 巨磁阻元件由磁性粒子分散型巨磁阻材料，人造晶格型巨磁阻材料或巨磁阻材料形成。