METHOD FOR REMOTE MONITORING OF STATE OF STRUCTURES AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2020 - IPC G01M7/00 

FIELD: measurement.

SUBSTANCE: disclosed method and device relate to instrumentation and can be used for continuous nondestructive testing, evaluation and prediction of technical condition of structures and engineering structures of special facilities, for example, potentially hazardous sections of pipelines of life support systems of special facilities, during the whole period of their operation. Device implementing proposed method comprises structural element 1, deformation measurement units 2, mechanical stress 3, vibration 4, pressure 5, flow rate 6, transported product temperature 7, soil temperature 8, electric current 9, electric potential 10 with comparison electrode, converters 11–19, controller 20, modem 21, communication line 22 and control point 23. Controller 20 comprises synchronizer 24, synthesizer 25 of carrier frequencies, duplexer 26, transceiving antenna 27, amplifier 28 of high frequency, phase detector 29, microprocessor 30. Each measurement unit and converter includes piezocrystal 31.j, transceiving antenna 32.j, input 33.j and output 34.j interdigital transducers (ID), input 35.j and output 36.j absorbers, matched load 37.j (j = 1, 2, …, m). Control point 23 comprises master oscillator 38, microprocessor 39, phase manipulator 40, first heterodyne 41, first mixer 42, first intermediate frequency amplifier 43, first power amplifier 44, duplexer 45, transceiving antenna 46, a second power amplifier 63, second heterodyne 64, second mixer 65, a second intermediate frequency amplifier 66, multiplier 67, band-pass filter 68, phase detector 69, amplifier 73 of second total frequency, third heterodyne 74 and third mixer 75. Modem comprises master oscillator 56, modulating code generator 57, phase manipulator 58, second heterodyne 59, second mixer 60, an intermediate frequency amplifier 61, a second power amplifier 62, duplexer 48, transceiving antenna 47, a first power amplifier 49, first heterodyne 50, first mixer 51, second intermediate frequency amplifier 52, multiplier 53, band-pass filter 54, phase detector 55, first summation frequency amplifier 70, third heterodyne 71 and third mixer 72.

EFFECT: technical result when implementing the declared solution is high noise-immunity and reliability of exchange of discrete information between a control point and a modem by suppressing false signals (interference) received over additional channels.

2 cl, 6 dwg