Optical fire detector and method for detecting an obstruction in a scatter volume of an optical fire detector

Optical fire detector and method for detecting an obstruction in a scatter volume of an optical fire detector

  • CN 103,177,523 A
  • Filed: 12/20/2012
  • Published: 06/26/2013
  • Est. Priority Date: 12/20/2011
  • Status: Active Application
First Claim
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1. the method for the objects interfered (12) of a scattering volume (7) that is used for the open optics fire detector (1) of identification, the optics fire detector (1) of described opening be according to the work of scattered light principle, wherein,-at least two scattered light layouts are used,-measured radiation is converted into scattered signal, and-by scattered signal is compared each other, scattered signal is then evaluated, with identification objects interfered (12),It is characterized in that,-measured radiation is hunted down from common scattering volume (7),-have the emission that is essentially lambert'"'"'s type and/or transmitter (5,5 '"'"') and/or the receiver (9,9 '"'"') of receiving feature is used, andThe main receive direction of the main transmit direction of-transmitter (5,5 '"'"') and receiver (9,9 '"'"') is parallel to each other.

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