THREE-SPECTRUM IR FLAME DETECTOR Russian patent published in 2012 - IPC G08B17/00 

FIELD: oil industry.

SUBSTANCE: main oil pipelines and gas pipelines are connected to the supervision and control unit by a radio channel and complex signals with frequency-shift keying is attained due to a bracket, a housing with an opening, signal processing unit, electronic key, airproof inlet, fire extinguisher system, led indicator window, photovoltaic detectors, preamplifiers, sign subtractive summation unit, inverter, selective amplifiers, bipolar detectors, an integrator, a comparator, power supply, spark protection circuit board, a basic frequency generator, a pseudo-random sequence generator, a frequency-shift keyer, a power amplifier and a transmitter antenna amplifier, while the supervision and control unit is equipped with a receiver antenna, a high-frequency amplifier, a heterodyne, a mixer, an intermediate frequency amplifier, a phase doubler, phase-lock-loop frequency control units, phase-splitting circuit for splitting in two, narrow-bandwidth filters, a frequency demodulator, a registration unit, a reference oscillator and a phase detector.

EFFECT: timely alarm transmission from remote facilities.

1 dwg, 5 dwg