Title:
PHOTOELECTRIC SEPARATION TYPE SMOKE DETECTOR AND DISASTER PREVENTION SYSTEM
Document Type and Number:
Japanese Patent JP2003016546
Kind Code:
A
Abstract:
To perform fire monitoring with accurate sensitivity even in the case of performing correction in a photoelectric separation type smoke detector.
This photoelectric separation type smoke detector 2 has a light emitting part 3 for emitting light and a light receiving part 4 for receiving the light emitted by the light emitting part. The photoelectric separation type smoke detector performs correction by controlling the light emission quantity of light by the light emitting part 3 so that detected light receiving quantity detected by the light receiving part 4 may be preset regulated quantity of received light.
Inventors:
SAKURAI KAZUYOSHI
AKIYAMA NOBUYUKI
HANEDA TETSUYA
AKIYAMA NOBUYUKI
HANEDA TETSUYA
Application Number:
JP2001199026A
Publication Date:
January 17, 2003
Filing Date:
June 29, 2001
Export Citation:
Assignee:
NITTAN CO LTD
International Classes:
G08B17/103; G08B17/00; (IPC1-7): G08B17/103; G08B17/00
Domestic Patent References:
| JPH06274781A | 1994-09-30 | |||
| JPH11224387A | 1999-08-17 | |||
| JPS5712813A | 1982-01-22 | |||
| JPS5299873A | 1977-08-22 | |||
| JPH07151680A | 1995-06-16 | |||
| JPH05242377A | 1993-09-21 | |||
| JPS5631625A | 1981-03-31 | |||
| JP2001126161A | 2001-05-11 |
Attorney, Agent or Firm:
Hiroshi Arafune