公开(公告)号：US09170129B2

公开(公告)日：2015-10-27

申请号：US14056208

申请日：2013-10-17

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Sachin Narahari Dekate ,  Glen Peter Kose ,  Aaron Jay Knobloch ,  Boon Kwee Lee ,  Sameer Dinkar Vartak ,  Seema Somani

IPC: G01D5/26

CPC classification number: G01D5/268 ,  G01D5/266 ,  G01D5/344

Abstract: A system for sensing the position of a movable object includes a polarization maintaining fiber configured to receive light from a light source; an optical system configured to rotate an angle of polarization of the light by a first predetermined angle; a low birefringence fiber connected to the optical system at a first end and having a mirror connected to a second end configured to reflect the light and rotate the angle of polarization at a second predetermined angle, the second end being configured to overlap a magnetic field of the a magnet attached to the object. The angle of polarization is rotated to a third predetermined angle proportional to at least one of the strength of the magnetic field and an amount of the overlap. The optical system is configured to decompose the third predetermined angle into a first component and a second component. A detector is configured to detect a differential between the first and second components indicative of the amount of the overlap.

Abstract translation: 用于感测可移动物体的位置的系统包括被配置为接收来自光源的光的偏振保持光纤; 光学系统，被配置为将所述光的偏振角旋转第一预定角度; 低折射光纤在第一端连接到光学系统，并且具有连接到被配置为反射光并将偏振角旋转到第二预定角度的第二端的反射镜，第二端构造成与第 附着在物体上的磁铁。 偏振角旋转到与磁场的强度和重叠量中的至少一个成比例的第三预定角度。 光学系统被配置为将第三预定角度分解成第一部件和第二部件。 检测器被配置为检测指示重叠量的第一和第二分量之间的差分。

公开(公告)号：US20140185056A1

公开(公告)日：2014-07-03

申请号：US13731239

申请日：2012-12-31

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Sachin Narahari Dekate ,  Glen Peter Koste ,  Aaron Jay Knobloch ,  Boon Kwee Lee ,  Sameer Dinkar Vartak ,  Seema Somani

IPC: G01B11/14

CPC classification number: G01D5/35367 ,  G01B7/023 ,  G01B11/026 ,  G01D5/145 ,  G01D5/35377

Abstract: A system for sensing the position of a movable object includes a polarization maintaining fiber configured to receive light from a light source; an optical system configured to rotate an angle of polarization of the light by a first predetermined angle; a low birefringence fiber connected to the optical system at a first end and having a mirror connected to a second end configured to reflect the light and rotate the angle of polarization at a second predetermined angle, the second end being configured to overlap a magnetic field of the a magnet attached to the object. The angle of polarization is rotated to a third predetermined angle proportional to at least one of the strength of the magnetic field and an amount of the overlap. The optical system is configured to decompose the third predetermined angle into a first component and a second component. A detector is configured to detect a differential between the first and second components indicative of the amount of the overlap.

Abstract translation: 用于感测可移动物体的位置的系统包括被配置为接收来自光源的光的偏振保持光纤; 光学系统，被配置为将所述光的偏振角旋转第一预定角度; 低折射光纤在第一端连接到光学系统，并且具有连接到被配置为反射光并且以第二预定角度旋转偏振角的第二端的反射镜，第二端构造成与第 附着在物体上的磁铁。 偏振角旋转到与磁场的强度和重叠量中的至少一个成比例的第三预定角度。 光学系统被配置为将第三预定角度分解成第一部件和第二部件。 检测器被配置为检测指示重叠量的第一和第二分量之间的差分。

公开(公告)号：US20150108335A1

公开(公告)日：2015-04-23

申请号：US14056208

申请日：2013-10-17

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Sachin Narahari Dekate ,  Glen Peter Kose ,  Aaron Jay Knobloch ,  Boon Kwee Lee ,  Sameer Dinkar Vartak ,  Seema Somani

IPC: G01D5/26

CPC classification number: G01D5/268 ,  G01D5/266 ,  G01D5/344

Abstract: A system for sensing the position of a movable object includes a polarization maintaining fiber configured to receive light from a light source; an optical system configured to rotate an angle of polarization of the light by a first predetermined angle; a low birefringence fiber connected to the optical system at a first end and having a mirror connected to a second end configured to reflect the light and rotate the angle of polarization at a second predetermined angle, the second end being configured to overlap a magnetic field of the a magnet attached to the object. The angle of polarization is rotated to a third predetermined angle proportional to at least one of the strength of the magnetic field and an amount of the overlap. The optical system is configured to decompose the third predetermined angle into a first component and a second component. A detector is configured to detect a differential between the first and second components indicative of the amount of the overlap.

Abstract translation: 用于感测可移动物体的位置的系统包括被配置为接收来自光源的光的偏振保持光纤; 光学系统，被配置为将所述光的偏振角旋转第一预定角度; 低折射光纤在第一端连接到光学系统，并且具有连接到被配置为反射光并将偏振角旋转到第二预定角度的第二端的反射镜，第二端构造成与第 附着在物体上的磁铁。 偏振角旋转到与磁场的强度和重叠量中的至少一个成比例的第三预定角度。 光学系统被配置为将第三预定角度分解成第一部件和第二部件。 检测器被配置为检测指示重叠量的第一和第二分量之间的差分。