Title:
MICROWAVE SENSOR
Document Type and Number:
WIPO Patent Application WO/2006/118041
Kind Code:
A1
Abstract:
A microwave sensor is provided with a moving distance measuring means (41) which measures a change quantity of a distance to a detected detection target object per unit time as a moving distance; a warning signal output control means (42) which controls to output a warning signal (Dout1) when the measured moving distance is a prescribed judgment threshold value or more; and a judgment threshold value changing means (43) which changes the judgment threshold value to a larger value when a status wherein the moving distance is at the judgment threshold value or more continues for a first prescribed period or longer or when a status wherein the moving distance is less than the judgment threshold value and a difference between the judgment threshold value and the moving distance is within a prescribed value continues for a second prescribed period or longer.
Inventors:
TSUJI MASATOSHI (JP)
Application Number:
PCT/JP2006/308320
Publication Date:
November 09, 2006
Filing Date:
April 20, 2006
Export Citation:
Assignee:
OPTEX CO LTD (JP)
TSUJI MASATOSHI (JP)
TSUJI MASATOSHI (JP)
International Classes:
G08B13/16; G01N22/00; G01S13/50; G01S13/86
Foreign References:
| JPH0520558A | 1993-01-29 | |||
| JPH09293178A | 1997-11-11 | |||
| JP2001106029A | 2001-04-17 | |||
| JP2000221273A | 2000-08-11 | |||
| JPH1139574A | 1999-02-12 | |||
| JP2000348265A | 2000-12-15 | |||
| JP2002344953A | 2002-11-29 | |||
| JPH0737176A | 1995-02-07 | |||
| JP2003207462A | 2003-07-25 |
Other References:
See also references of EP 1879157A4
Attorney, Agent or Firm:
Kurauchi, Giro (14-3 Nishitemma 4-chome, Kita-ku, Osaka-sh, Osaka 47, JP)
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