Title:
INDUCTANCE TYPE DISPLACEMENT SENSOR
Document Type and Number:
Japanese Patent JPH02150702
Kind Code:
A
Abstract:
PURPOSE:To detect the displacement of an object to be measured in the radial and axial directions by providing tapered sections at a pair of core facing sections and detecting signals outputted from both ends of a pair of coils, one ends of which are connected with each other, with the other ends being respectively connected with fixed resistors. CONSTITUTION:A pair of cores 1 and 2 are faced to each other in a plane perpendicular to the axial direction of an object 5 to be measured and the other pair of cores 3 and 4 are also arranged similarly. Coils 6 and 7 are respectively wound around the pair of cores 1 and 2 and coils 8 and 9 are respectively wound around the pair of cores 3 and 4. Then one ends of the pair of cores 6 and 7 are connected with each other and fixed resistors 11 and 12 are respectively connected to the other ends of the coils, with the other end of the resistor 11 being connected with the output terminal of a constant-voltage circuit 10 which supplies carriers. When the output signal VR of the connecting point of the coils 6 and 7 is detected by using such constitution, the displacement of the object to be measured in the radial can be measured. Moreover, when the voltage Vr across both end of the resistor 12 is detected, the displacement of the object in the axial direction can be measured.
Inventors:
SHIRAO YUJI
Application Number:
JP30566688A
Publication Date:
June 11, 1990
Filing Date:
December 01, 1988
Export Citation:
Assignee:
EBARA RES CO LTD
International Classes:
G01B7/00; G01D5/20; (IPC1-7): G01B7/00; G01D5/20
Attorney, Agent or Firm:
Takashi Kumagai (1 outside)