EP 0349403 A3 19910424 - SMOKE DETECTOR WITH AN INTEGRATED ADDRESS CIRCUIT
Title (en)
SMOKE DETECTOR WITH AN INTEGRATED ADDRESS CIRCUIT
Publication
Application
Priority
FR 8808817 A 19880630
Abstract (en)
[origin: EP0349403A2] The present invention relates to a novel smoke detector with radioactive source operating on the air capacitor principle, equipped with an electronic velocity-measuring circuit, to which has been fitted an integrated circuit in order to inform the terminal about the nature and address of the location of the incident. The invention, according to Figure 1, is characterised in that it comprises: - a detector with ionisation chamber containing a radioactive source, (1), - an electronic velocity-measuring circuit for processing the signals, (16), - an integrated circuit (17) determining the nature of the signals and indicating to a terminal (TS) the location of the incident. The invention is used in fire detection installations. <IMAGE>
IPC 1-7
IPC 8 full level
G01N 27/00 (2006.01); G08B 17/10 (2006.01); G08B 17/11 (2006.01)
CPC (source: EP)
G08B 17/11 (2013.01)
Citation (search report)
- [Y] FR 2607938 A1 19880610 - GAMMA ELECTRONIQUE [FR], et al
- [Y] US 3765016 A 19731009 - BERT P, et al
- [A] US 4290055 A 19810915 - FURNEY DOUGLAS E, et al
Designated contracting state (EPC)
BE CH DE ES GB IT LI LU NL
DOCDB simple family (publication)
EP 0349403 A2 19900103; EP 0349403 A3 19910424; FR 2633761 A1 19900105; FR 2633761 B1 19950317; JP H0232500 A 19900202
DOCDB simple family (application)
EP 89401804 A 19890626; FR 8808817 A 19880630; JP 12862189 A 19890522