Global patent index - EP 1014324 A1

EP 1014324 A1 2000-06-28 - PIR detector

Title (en)

PIR detector

Title (de)

PIR-Melder

Title (fr)

Détecteur PIR

Publication

EP 1014324 A1 (DE)

Application

EP 98120564 A

Priority

  • EP 98120564 A
  • DE 19737166 A

Abstract (en)

the device has a window foil (2), PIR sensor behind the foil with evaluation electronics, a transmitter diode (28), a detector (28') of the scattered radiation from the diode and a circuit which compares the actual detected radiation value with a desired value. The transmitter diode and the detector are mounted in separate tubular stops next to the window foil. The transmitter diode stop has a lateral opening (32) for part of the diode's output radiation. The detector stop has a lateral opening (32') for the entry only of radiation scattered by the window foil.

Abstract (de)

Ein PIR-Melder mit verbesserter Überwachung der Fensterfolie (2) umfaßt eine Sendediode (28) und einen Detektor (28'), die in voneinander beabstandeten und neben der Fensterfolie (2) liegenden Blenden (29, 29') angeordnet sind. Dabei hat die Sendendiodenblende eine seitliche Öffnung (32), über die ein Teil der Strahlung auf die Fensterfolie (2) fällt. Die Detektorblende hat ebenfalls eine seitliche Öffnung (32'), die nur den Eintritt von an der Fensterfolie (2) gestreuter Strahlung der Sendediode (28) zuläßt. Eine Randbegrenzung (34) an der seitlichen Öffnung der Sendediodenblende verhindert, daß Strahlung von der Sendediode auf direktem Weg in die seitliche Öffnung der Detektorblende einfällt. Vorzugsweise sind die Sendedioden und die Detektorblende zueinander spiegelsymmetrisch. <IMAGE>

IPC 1-7 (main, further and additional classification)

G08B 29/04

IPC 8 full level (invention and additional information)

G08B 13/183 (2006.01); G08B 29/04 (2006.01)

CPC (invention and additional information)

G08B 29/046 (2013.01); G08B 13/183 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT CH ES FR GB IT LI NL

EPO simple patent family

EP 1014324 A1 20000628; EP 1014324 B1 20030108; AT 230878 T 20030115; DE 19737166 A1 19990311; DE 19737166 C2 20020425; ES 2190029 T3 20030716

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