DEVICE AND METHOD FOR MEASURING STRESS OR TEMPERATURE OF ROTATION BODY

Title:

DEVICE AND METHOD FOR MEASURING STRESS OR TEMPERATURE OF ROTATION BODY

Document Type and Number:

Japanese Patent JP2002181639

Kind Code:

A

Abstract:

To provide a technology allowing the accurate measurement of the stress or temperature of a rotation body using a resistance element and relaxing space restrictions.

One end of the resistance element 4 mounted on the rotation body 3 is grounded to the ground earth, while the other end is connected in series to electrodes 5, 11 and a variable inductance 16, and a surrounding shielding member 10 between the electrode 11 and the variable inductance 16 is connected to a shield driving circuit 19 different from earthing, to provide a shielding function. At least one of inductance, electrostatic capacity and oscillation frequency is variably controlled to make the phase angle of impedance always constant, and a reference signal is added to a detected current signal to detect the resistance change of the resistance element 4.

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Inventors:

KOHARI YUJI
SAKAI MASANOBU
OSHIMA MASAHARU
IZEKI TATSUMI

Application Number:

JP2000376759A

Publication Date:

June 26, 2002

Filing Date:

December 12, 2000

Export Citation:

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Assignee:

NISSAN MOTOR

International Classes:

G01L1/00; G01K7/24; G01K13/08; G01L3/10; G08C19/00; (IPC1-7): G01L1/00; G01K7/24; G01K13/08; G01L3/10; G08C19/00

Attorney, Agent or Firm:

Fujiya Shiga (3 outside)

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