Scattered radiation fire detector and method for the automatic detection of a fire situation
    1.
    发明授权
    Scattered radiation fire detector and method for the automatic detection of a fire situation 有权
    散射辐射火灾探测器和自动侦测火灾情况的方法

    公开(公告)号:US09036150B2

    公开(公告)日:2015-05-19

    申请号:US13684786

    申请日:2012-11-26

    摘要: A scattered radiation fire detector having radiation sources of different wavelengths and a scattered radiation sensor, which are arranged and formed so that their optical axes are directed at a common centre of a scattering volume. A sensor unit is furthermore formed to register forward scattering I1(λ1,fwd) of a first radiation source, forward scattering I2(λ2,fwd) of a second radiation source and backward scattering I3(λ1,bwd) of a further first radiation source, to calculate scattered radiation intensity quotients Q1=I1(λ1,fwd)/I2(λ2,fwd), Q2=I1(λ1,fwd)/I3(λ1,bwd) and Q3=I2(λ2,fwd)/I3(λ1,bwd) and to detect the existence of a fire situation using the scattered radiation intensity quotients.

    摘要翻译: 具有不同波长的辐射源和散射辐射传感器的散射辐射火灾探测器被布置和形成为使得它们的光轴指向散射体积的公共中心。 此外形成传感器单元以记录第一辐射源的前向散射I1(λ1,fwd),第二辐射源的前向散射I2(λ2,fwd)和另外的第一辐射源的向后散射I3(λ1,bwd) ,计算散射辐射强度商Q1 = I1(λ1,fwd)/ I2(λ2,fwd),Q2 = I1(λ1,fwd)/ I3(λ1,bwd)和Q3 = I2(λ2,fwd)/ I3 λ1,bwd),并使用散射辐射强度商检测存在火灾情况。