DEVICE FOR HIGH WATER OR EARTH FLOW WARNING Russian patent published in 2002 - IPC

Abstract RU 2190255 C2

FIELD: signaling apparatuses warning the inhabitants on danger of natural calamity. SUBSTANCE: the device has a radio transmitter, multivibrator, level detectors, sensing elements, relays, output relay, resistor, power supply, master oscillator, Morse key, modulating code generator, phase manipulator, transmitting antenna, radio receiver, receiving antenna, search unit, mixers, spectrum width meters, amplitude detectors, calibration oscillator, controlled phase shifters, subtracter, low-pass filter, phase detectors, sign inverters and a control element. EFFECT: enhanced noise immunity of radio receiver due to elimination of non-identity of receiving channels by using the amplitude-phase modulation for identification, provided reception of trustworthy messages. 10 dwg

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RU 2 190 255 C2

Authors

Rogalev V.A.

Denisov G.A.

Dikarev V.I.

Dates

2002-09-27Published

2000-12-13Filed