The smoke detection of measuring by means of the different scattered lights of two kinds of spectrum

The smoke detection of measuring by means of the different scattered lights of two kinds of spectrum

CN
  • CN 101,952,863 A
  • Filed: 02/16/2009
  • Published: 01/19/2011
  • Est. Priority Date: 02/19/2008
  • Status: Active Grant
First Claim
Patent Images

1. device that is used for surveying smog based on the optical scattering photo measure, described device (100,200,300) has:



  • optical sending apparatus (110,210,310), it is arranged to the time series of sending light pulse, and wherein first light pulse has first spectral distribution and second light pulse has second spectral distribution different with first spectral distribution;



    optical receiver (120,220,320), it is arranged to receptionFrom first scattered light of first light pulse and from second scattered light of second light pulseAnd provideIndicate first scattered light first output signal andIndicate second output signal of second scattered light;

    And●

    analytic unit (330), it is arranged to compares first output signal with second output signal.

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