EP 1006500 A3 20010411 - Smoke detector with aspiration unit and flow sensor
Title (en)
Smoke detector with aspiration unit and flow sensor
Title (de)
Rauchmelder mit Absaugeinheit und Durchflussmesser
Title (fr)
Détecteur de fumée avec unité d'aspiration et capteur de débit
Publication
Application
Priority
US 20544098 A 19981204
Abstract (en)
[origin: EP1006500A2] A detector includes a smoke sensor and an aspiration unit. The aspiration unit causes ambient air from a region directly adjacent to the detector to flow into a sensing region of the sensor. A flow monitoring sensor provides feedback to a control circuit to vary pulse modulated drive signals coupled to the aspiration unit. A plurality of variable resistance temperature sensors can be used for flow monitoring. Communication with the detector can be carried out via interface circuits. <IMAGE>
IPC 1-7
IPC 8 full level
G08B 17/10 (2006.01); G08B 17/103 (2006.01)
CPC (source: EP)
G08B 17/10 (2013.01); G08B 29/145 (2013.01); G08B 17/113 (2013.01)
Citation (search report)
- [XY] WO 9504338 A2 19950209 - AIRSENSE TECHNOLOGY LTD [GB], et al
- [Y] US 5079422 A 19920107 - WONG JACOB Y [US]
- [A] US 4254414 A 19810303 - STREET THOMAS T, et al
- [A] US 5546074 A 19960813 - BERNAL BRIAN A [US], et al
- [A] CH 677543 A5 19910531 - CERBERUS AG
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1006500 A2 20000607; EP 1006500 A3 20010411; AU 6314499 A 20000608; CA 2291203 A1 20000604; CN 1256411 A 20000614; JP 2000172964 A 20000623
DOCDB simple family (application)
EP 99309678 A 19991202; AU 6314499 A 19991202; CA 2291203 A 19991129; CN 99125572 A 19991203; JP 34207899 A 19991201