FIELD: fire alarm devices, possible use for detecting combustion focus on basis of infrared radiation of increased temperature source, possible use for provision of explosion safety and fire safety in industrial premises and working areas.
SUBSTANCE: sensor contains body, photo-sensitive element with light filter, letting infrared radiation through, connected to subtracting device, connected to analog-digital converter by output through amplifier, microcontroller with memory block meant for controlling receipt from analog-digital converter by means of serial port transmitter-receiver of signal being measured and also receipt of signal from communication line about value of natural background, and also for controlling generation of signal for compensation of natural background value in memory block and transmission thereof through digital-analog converter onto second input of subtracting device for generation of parametric check connection.
EFFECT: increased speed of operation, increased reliability and infallibility of activation of fire-fighting and fire alarm systems.
1 dwg
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