公开(公告)号：US20120050051A1

公开(公告)日：2012-03-01

申请号：US13218554

申请日：2011-08-26

Applicant: MICHAEL CLOSSEN-VON LANKEN SCHULZ

Inventor： MICHAEL CLOSSEN-VON LANKEN SCHULZ

IPC: G08B17/10

CPC classification number: G08B17/107 ,  G08B29/181

Abstract: A fire detector has a detection unit working on the optical scattered-light principle, as well as an electronic evaluation unit. An acoustic and/or optical warning device outputs an acoustic and/or optical alarm when a fire is detected. The fire detector has an energy storage device, in particular a battery, for the autarkic supply of electrical power to the fire detector as well as a voltage measuring unit for measuring a battery voltage present at the energy storage device. A warning device outputs an acoustic warning if the battery voltage falls below a first voltage threshold. The fire detector also has a sensor sensitive to ambient light and a device for suppressing the output of the acoustic warning if the ambient light falls below a predefinable brightness threshold. The detection unit is an open scattered-light detection unit with a detection space outside the fire detector and the sensor sensitive to ambient light is at the same time an optical receiver of the scattered-light detection unit.

Abstract translation: 火灾探测器具有以光散射原理工作的检测单元以及电子评估单元。 当检测到火灾时，声学和/或光学警告装置输出声学和/或光学警报。 火灾探测器具有能量存储装置，特别是蓄电池，用于自动向火灾探测器供电，以及用于测量存储在能量存储装置上的电池电压的电压测量单元。 如果电池电压低于第一电压阈值，则报警装置输出声音警告。 火灾探测器还具有对环境光敏感的传感器，以及如果环境光低于预定亮度阈值，则抑制声警报输出的装置。 检测单元是具有火灾检测器外部的检测空间的开放散射光检测单元，对环境光敏感的传感器同时是散射光检测单元的光接收器。