Title:
PROXIMITY-SENSOR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/156276
Kind Code:
A1
Abstract:
[Problem] To provide a proximity-sensor system that can prevent false-positive detection of a detection target. [Solution] A proximity-sensor system that can prevent false-positive detection of a detection target is provided. [Solution] A proximity-sensor system (100) is provided with the following: a sensor unit (10) provided with an oscillator circuit that forms a magnetic field with a prescribed oscillation frequency; and a detection-target unit (50) that is provided on a detection target (A) and is provided with a resonant circuit that has a resonant frequency based on the prescribed oscillation frequency. The sensor unit (10) is also provided with a detection circuit (30) that, if the oscillation of the oscillation circuit changes due to the resonant circuit, detects that the detection target (A) has approached.
Inventors:
SUZUKI SHINICHIRO (JP)
Application Number:
PCT/JP2014/051855
Publication Date:
October 02, 2014
Filing Date:
January 28, 2014
Export Citation:
Assignee:
AZBIL CORP (JP)
International Classes:
H01H36/00; G01B7/00; H03K17/95
Foreign References:
| JPH05315929A | 1993-11-26 | |||
| JPH04183112A | 1992-06-30 | |||
| JPS6039727A | 1985-03-01 | |||
| JP2010216863A | 2010-09-30 | |||
| JP2011216256A | 2011-10-27 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
Yoshiyuki Inaba (JP)
Yoshiyuki Inaba (JP)
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