REMOTE SENSING SYSTEM, AND ROTATIONAL SPEED MEASURING DEVICE

Title:

REMOTE SENSING SYSTEM, AND ROTATIONAL SPEED MEASURING DEVICE

Document Type and Number:

Japanese Patent JP2007256192

Kind Code:

A

Abstract:

To precisely detect information as to a rotational speed, a position or the like of an object in a position distant from the object.

This remote sensing system 10 is provided with an antenna tuning circuit 11 at the position at a distance from a rotor 1. The antenna tuning circuit 11 detects the electromagnetic waves generated due to the rotation of the rotor 1 and outputs a detection signal. The detection signal output from the antenna tuning circuit 11 is analyzed by an FFT circuit 14, to find the frequency of the electromagnetic waves, and inputs the frequency of the electromagnetic waves into a measured value conversion part 15. The measured value conversion part 15 outputs the frequency of the electromagnetic wave as the rotational speed of the rotor 1.

Inventors:

MUTOU YOSHIYASU
KOBAYASHI MITSUAKI

Application Number:

JP2006083521A

Publication Date:

October 04, 2007

Filing Date:

March 24, 2006

Export Citation:

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Assignee:

JR HIGASHI NIPPON CONSULTANTS

International Classes:

G01D5/20; G01P3/48; G01P15/00; G01S11/02

Domestic Patent References:

JPS59162459A

1984-09-13

Attorney, Agent or Firm:

Amada Masayuki

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