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EP0360126A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Operation method for an optical smoke detector and smoke detector for carrying out the method

Assignee: Individual
•
Filing: 1989-09-12
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Granted: —
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Expires: 2009-09-12
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Abstract

Abstract Translated from German Verfahren zum Betrieb eines optischen Rauchmelders, bei dem zur Detektierung von Rauch mindestens ein lichtempfind­licher Empfänger die Nutzstreustrahlung mißt, die von einem Raumelemnt ausgeht, das im Kreuzungsbereich des gerichteten Gesichtsfelds des lichtempfindlichen Empfängers und des gerichteten Strahls einer Lichtquelle liegt, wobei zur Detektierung der durch Verschmutzung der Meßkammer hervor­gerufenen Störstreustrahlung der lichtempfindliche Empfän­ger oder ein zweiter lichtempfindlicher Empfänger die Strahlung erfaßt, die von einem Flächenelement der Meßkam­mer ausgeht, dadurch gekennzeichnet, daß die Reflexions­strahlung eines beleuchteten Flächenelements gemessen wird. Method for operating an optical smoke detector, in which at least one light-sensitive receiver measures the useful scatter radiation which emits from a room element which is in the area of intersection of the directional field of view of the light-sensitive receiver and the directional beam of a light source, for detection of smoke, with the detection of pollution due to the detection of smoke the measuring chamber caused interference scatter radiation, the light-sensitive receiver or a second light-sensitive receiver detects the radiation emanating from a surface element of the measuring chamber, characterized in that the reflection radiation of an illuminated surface element is measured.

Inventors

  • 👤 Hartwig Dipl.-Ing. Beyersdorf

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 12:47
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/103; G08B17/107; G08B29/00; G08B29/18; G08B29/20; G08B29/24; G08B17/11; G08B17/113

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