EDDY CURRENT SENSOR AND TURBO CHARGER ROTATION DETECTING DEVICE USING SAME

Title:

EDDY CURRENT SENSOR AND TURBO CHARGER ROTATION DETECTING DEVICE USING SAME

Document Type and Number:

WIPO Patent Application WO/2013/114564

Kind Code:

A1

Abstract:

[Problem] To provide, without increasing manufacturing cost, an inexpensive eddy current sensor having a small-sized configuration and capable of accurately detecting the rotational speed of a turbo charger and to provide a turbo charger rotation detecting device using the eddy current sensor. [Solution] The eddy current sensor has a resonance circuit formed by a coil disposed in the vicinity of a target and a capacitor and measures displacement on the basis of a voltage change caused by the relative movement between the target and the coil. In the eddy current sensor, the coil is formed by being wound around a columnar ferrite core and mounted on the compressor of a turbo charger, thereby detecting the rotational speed of the turbo charger.

More Like This:

JP2014025883	EDDY CURRENT TYPE INSTRUMENT DEVICE
WO/2015/027348	SENSOR DEVICE FOR DETERMINING ROTATIONAL SPEED OF A ROTATABLE OBJECT AND TURBOCHARGER WITH SUCH A SENSOR DEVICE
WO/2006/059976	TURBINE ENGINE WITH A ROTOR SPEED SENSOR AND CORRESPONDING OPERATING METHOD

Inventors:

SHOJI KAZUICHI (JP)
TOMONARI KENGO (JP)
IWAMOTO HIRONORI (JP)

Application Number:

PCT/JP2012/052111

Publication Date:

August 08, 2013

Filing Date:

January 31, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

APPLIED ELECTRONICS CORP (JP)
SHOJI KAZUICHI (JP)
TOMONARI KENGO (JP)
IWAMOTO HIRONORI (JP)

International Classes:

G01P3/49; G01B7/00; G01D5/245

Foreign References:

JP2007198821A	2007-08-09
JP2008304471A	2008-12-18
JPH03135769A	1991-06-10
JP2008506074A	2008-02-28
JP2007089336A	2007-04-05

Other References: