Title:
MICROWAVE SENSOR
Document Type and Number:
WIPO Patent Application WO/2003/036327
Kind Code:
A1
Abstract:
A trigger level for which to the distance to a detected object is related to the signal level of the microwave reflected from the object is set in advance. Only when the reflected microwave having a signal level over the trigger level is received, an object detection signal is generated assuming that the detected object is an object to be determined as a detection object having a size larger than a predetermined size.
Inventors:
TSUJI MASATOSHI (JP)
Application Number:
PCT/JP2002/010900
Publication Date:
May 01, 2003
Filing Date:
October 21, 2002
Export Citation:
Assignee:
OPTEX CO LTD (JP)
TSUJI MASATOSHI (JP)
TSUJI MASATOSHI (JP)
International Classes:
G01N22/00; G01S7/285; G01S13/04; G01S13/38; G01V3/12; G01S13/50; G08B13/16; (IPC1-7): G01S13/04; G01N22/00; G01V3/12; G08B13/18
Foreign References:
| JPH08166449A | 1996-06-25 | |||
| JPH01285884A | 1989-11-16 | |||
| EP0191510A1 | 1986-08-20 | |||
| JP2000338234A | 2000-12-08 |
Attorney, Agent or Firm:
Kurauchi, Giro (14-3 Nishitemma 4-chome, Kita-k, Osaka-shi Osaka, JP)
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