INFRARED SENSOR SUITABLE FOR FIRE FIGHTING APPLICATIONS

摘要

An infrared sensor which is particularly well suited for the detection of fires, consisting of an infrared detector (1), a filter to set the passing band (2), an optical assembly to pick up the signal (3), an electronic amplifier and signal processor (4); a sealed container (5) and a pedestal (6) which gives freedom of movement in elevation to the sensor itself. By adopting a suitable rotating platform and a signal processor, the sensor can be utilised to detect sources at temperature 200 to 300 degrees C above an ambient temperature background. The data provided includes the direction of the signal detected, its amplitude and its time variation. The spectral sensitivity of the sensor is such as to offer an optimum application of the safe-guarding of natural environments from the risk of fires; in standard weather conditions it is able to detect a six-meter fire at 10 km range.