Considering drawbacks of slow response of existing dual-infrared band flame detectors

a flame detection device

which has high precision and high reliability is designed.This detector has three probes with wide spectrum range

185～260 nm ultraviolet photosensitive tube

and 2.7

4.35 μm double infrared photosensitive tubes

combining reliable hardware circuits and efficient flame recognition algorithms

the detector has the advantages of quick response time which is not more than 2 ms@0.4 m

standard fire

wide perspectives range of 110°

high reliability

long life

etc.The flame detector is oriented to practical applications

it has the ability of preventing multi-factor interference.It can effectively eliminate the false alarm caused by non-flame radiation

such as sunlight

and a variety of artificial lights.It solves the long-standing problem of high false alarm rate for photosensitive flame detector.