DEVICE FOR NOTIFICATION ABOUT FLASH FLOOD OR MUD FLOW Russian patent published in 2004 - IPC

FIELD: signaling equipment engineering.

SUBSTANCE: device has radio transmitter, multivibrator, first, second and third level sensors with first, second and third sensor elements, first, second and third relay, first, second, third, fourth and fifth contacts, output relay of multivibrator, resistor, first, second and third power sources, setting generator, telegraph key, modulating code generator, phase manipulator, power amplifier, transmitting antenna, radio receiver, receiving antenna, searching block, mixer, heterodyne, intermediate frequency amplifier, detector, first and second measuring instruments for spectrum range, frequency doubler, comparator block, threshold block, first key, delay line, sound signaling means, means for dividing frequency in two, narrowband filter, first phase detector, registration block, second key, frequency detector, trigger, balancing switch, 45° shifter, 90° shifter, second phase detector, subtraction block, and means for forming analog of modulating code.

EFFECT: higher interference resistance and higher reliability of receiving phase-manipulated signals by means of compensating interferences.

2 dwg