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发明授权
US08681012B2 Detectors 失效
探测器

Detectors
摘要：
A detector (101) for detecting smoke from a fire and generating an alarm has a detection chamber (105) in which a light source (111) and a light detector (113) are arranged. In normal use, the light detector (113) only receives light from the light source that has been scattered by the presence of smoke in the chamber (105). When testing the detector (101), the light detector (113) receives light from the light source (111) by presenting a reflecting surface (129a) of a rotor member (129) to reflect light from the light source (111) towards the light detector (113). In normal use, the rotor member (129) is positioned so that the reflecting surface (129a) no longer reflects light from the light source (111) towards the light detector (113).
摘要（中）：

一种用于从火中检测烟雾并产生警报的检测器（101）具有布置有光源（111）和光检测器（113）的检测室（105）。 在正常使用中，光检测器（113）仅接收来自已经在室（105）中存在烟雾而散射的光源的光。 当检测器（101）测试时，光检测器（113）通过呈现转子构件（129）的反射表面（129a）来接收来自光源（111）的光，以将来自光源（111）的光朝向 光检测器（113）。 在正常使用中，转子构件（129）被定位成使得反射表面（129a）不再将来自光源（111）的光朝向光检测器（113）反射。

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