公开(公告)号：WO9626455B1

公开(公告)日：2001-04-05

申请号：PCT/US9601632

申请日：1996-02-05

Applicant: ELIAS SHARON A

Inventor： ELIAS SHARON A

IPC: A61B5/11 ,  G01C9/06 ,  G01C9/18 ,  G01C9/20 ,  G01H11/02 ,  G01P3/46 ,  G01P15/08

CPC classification number: A61B5/1111 ,  A61B5/4547 ,  A61B5/682 ,  A61B2562/0223 ,  A61B2562/168 ,  G01C9/06 ,  G01C9/20 ,  G01C2009/064 ,  G01C2009/187 ,  G01H11/02 ,  G01P3/46 ,  G01P15/0888

Abstract: A sensor for measuring angular displacement of a small body comprising a sealed housing containing a differential transformer having at least two primary coils (17, 18), one primary (67) and two secondary coils (65, 66), or two primary (27, 28) and two secondary coils (25, 29), said coils being partially submerged in a ferromagnetic fluid. The level of fluid relative to the coils will vary as the sensor is tilted. When AC current is applied to at least the primary coils of the transformer, the voltage across the circuit defined by the two primary coils or the two secondary coils is indicative of the angle of tilt of the sensor and the body to which it is attached.

Abstract translation: 一种用于测量小体积角位移的传感器，包括：密封壳体，其包含具有至少两个初级线圈（17,18），一个初级线圈（67）和两个次级线圈（65,66）或两个初级线圈 ，28）和两个次级线圈（25,29），所述线圈部分地浸没在铁磁流体中。 流体相对于线圈的水平将随传感器倾斜而变化。 当交流电流被施加到至少变压器的初级线圈时，由两​​个初级线圈或两个次级线圈限定的电路两端的电压表示传感器和与其连接的主体的倾斜角度。

公开(公告)号：WO1996026455A3

公开(公告)日：1996-08-29

申请号：PCT/US1996001632

申请日：1996-02-05

Applicant: ELIAS, Sharon, A.

IPC: G01C09/06

公开(公告)号：WO9626455A2

公开(公告)日：1996-08-29

申请号：PCT/US9601632

申请日：1996-02-05

Applicant: ELIAS SHARON A

Inventor： ELIAS SHARON A

IPC: A61B5/11 ,  G01C9/06 ,  G01C9/18 ,  G01C9/20 ,  G01H11/02 ,  G01P3/46 ,  G01P15/08 ,  G01V

CPC classification number: A61B5/1111 ,  A61B5/4547 ,  A61B5/682 ,  A61B2562/0223 ,  A61B2562/168 ,  G01C9/06 ,  G01C9/20 ,  G01C2009/064 ,  G01C2009/187 ,  G01H11/02 ,  G01P3/46 ,  G01P15/0888

Abstract: A sensor for measuring angular displacement of a small body comprising a sealed housing containing a differential transformer having at least two primary coils, one primary and two secondary coils, or two primary and two secondary coils, said coils being partially submerged in a ferromagnetic fluid. Upon application of an AC current to at least the primary coils of the differential transformer, the voltage across the circuit defined by the two primary or the two secondary coils is indicative of the angle of tilt of the sensor and the body to which it is attached. An inductive sensor is comprised of a sealed housing; at least one current path disposed in the housing; means for applying current to the current path; variable low reluctance magnetic path about the current path; and means for sensing the output from the current path as a function of variations in the magnetic flux path. Alternative current path configurations include a differential transformer, comprised of a permanent magnet or one or more primary coils in conjunction with two secondary coils, or a voltage divider, comprised of two primary coils. The variable magnetic flux path includes ferromagnetic fluid disposed in the housing to a level at which all coils are at least partially submerged. Tilt or other displacement of the sensor results in a change in the amount of fluid contacting the coils and a resultant change in current output from the current path means. The change in sensed voltage is indicative of displacement and sustained output voltage is proportional to the degree of tilt of the sensor.

Abstract translation: 一种用于测量小体积角位移的传感器，其包括密封壳体，该壳体包含具有至少两个初级线圈，一个初级线圈和两个次级线圈或两个初级线圈和两个次级线圈的差分变压器，所述线圈部分地浸没在铁磁性流体中。 在将AC电流施加到至少差分变压器的初级线圈之后，由两个初级线圈或两个次级线圈限定的电路两端的电压表示传感器和与其连接的主体的倾斜角度 。 电感式传感器由密封外壳构成; 设置在所述壳体中的至少一个电流通路; 用于向当前路径施加电流的装置; 围绕电流通路的可变低磁阻磁路; 以及用于感测来自电流路径的输出作为磁通路径变化的函数的装置。 可选择的电流路径配置包括由永磁体或与两个次级线圈相结合的一个或多个初级线圈组成的差分变压器，或包括两个初级线圈的分压器。 可变磁通路径包括设置在壳体中的铁磁流体，其中所有线圈至少部分地被浸没。 传感器的倾斜或其他位移导致与线圈接触的流体的变化以及从电流路径装置输出的电流的变化。 感测电压的变化表示位移，持续的输出电压与传感器的倾斜度成比例。