(19)
(11) EP 0 926 647 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.07.1999 Bulletin 1999/30

(43) Date of publication A2:
30.06.1999 Bulletin 1999/26

(21) Application number: 99200961.3

(22) Date of filing: 07.09.1993
(51) International Patent Classification (IPC)6: G08B 17/12
(84) Designated Contracting States:
CH DE FR GB IT LI NL

(30) Priority: 08.09.1992 IL 10309492
01.01.1993 IL 10429893
07.09.1993 IL 10535193

(62) Application number of the earlier application in accordance with Art. 76 EPC:
93630065.6 / 0588753

(71) Applicant: SPECTRONIX LTD.
67 778 Tel Aviv (IL)

(72) Inventors:
  • Goldenberg, Ephraim
    64357 Tel Aviv (IL)
  • Olami, Tal
    84786 Beersheba (IL)
  • Arian, Jacob
    Beersheba (IL)

(74) Representative: Waxweiler, Jean et al
Dennemeyer & Associates Sàrl P.O. Box 1502
1015 Luxembourg
1015 Luxembourg (LU)

 
Remarks:
This application was filed on 29 - 03 - 1999 as a divisional application to the application mentioned under INID code 62.
 


(54) Method for detecting a fire condition


(57) A method of detecting a fire condition in a monitored region includes concurrently monitoring the region by a first sensor sensitive to radiation within a first bandwidth which includes the CO2 emission band, by a second sensor sensitive to radiation within a second bandwidth which includes wavelengths mainly lower than the CO2 emission band, and by a third sensor sensitive to the radiation within a third bandwidth which includes wavelengths higher than the CO2 emission band. The measurements of all these sensors are utilized in determining the presence or absence of the fire condition in the monitored region.






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