METHOD FOR REMOTE MONITORING AND DIAGNOSTICS OF CONDITION OF STRUCTURES AND ENGINEERING STRUCTURES AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01M7/00 

FIELD: measuring equipment.

SUBSTANCE: disclosed technical solutions 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 military infrastructure facilities, during the whole period of their operation. Method for remote monitoring and diagnostics of structural condition and engineering structures consists in the fact that at the monitoring point signals from measurement units installed in the areas of structure diagnostics are registered, comparing them with pre-fixed values and deviation of incoming signals from pre-recorded judgments on presence of changes of monitored parameters. At the same time the structural element is made of the same material as the whole structure, measurement units are placed on it and metrological certification of the element is performed. Then, the element with the measurement units installed on it is cut into the places of the structure diagnostics and by the deviation of the received signals from the measurement units from the pre-recorded signals, the state of the structure is determined, wherein measurement units and converters are made in form of delay lines on surface acoustic waves. When converting acoustic waves into an electromagnetic signal, phase shift keying is used, wherein the signal structure reflects the sequence number of the delay line and the value of the monitored parameter. Exchange of discrete information between control station and modem is carried out by using two frequencies and complex signals with phase manipulation. Device implementing proposed method comprises structural element 1, measurement units: deformation 2, mechanical stress 3, vibration 4, pressure 5, flow rate 6, temperature 7 of transported product, soil temperature 8, electric current 9, electric potential 10 with splicing electrode, converters 11-19, controller 20, modem 21, radio communication line 22 and control point 23. Features of design of measurement units, converters, controller 20, control point 23 are given in description and explanatory drawings.

EFFECT: high noise immunity and reliability of exchanging discrete information between a control point and a modem by using two frequencies and complex signals with phase manipulation.

2 cl, 6 dwg