DEVICE FOR REMOTE MEASURING MUTUAL ELEMENT DISPLACEMENT OF BUILDINGS AND STRUCTURES Russian patent published in 2017 - IPC G01S13/36 

FIELD: measuring equipment.

SUBSTANCE: invention relates to instrumental means of monitoring conditions of buildings and structures, in particular measuring of mutual displacements of their structure elements through an active interferometer operating on the basis of comparing the phases of transmitted and simultaneously received signals in the form of electromagnetic waves in the microwave range. The device is a microwave active interferometer and comprises two transceiving units operating at different frequencies of the probing radiation and each consisting of a generator of continuous harmonic oscillations connected to the Y-circulator entry, the output of which is low-loss connected to the transceiver antenna and the output of which is high-loss connected to quadratic mixer input connected to the input of the intermediate frequency amplifier by its output, equal to the difference frequency of the probing radiation of generators of continuous harmonic oscillations. Also, the device comprises a phase detector connected by its input to the outputs of the intermediate frequency amplifiers in the said units and its output connected via an analog-to-digital converter to the input of the microcontroller to form a discrete time dependence of the mutual displacement of the two building and structure elements. The transceiving units are rigidly fixed one on two mutually displaceable elements of a building or structure, and the transceiving antennas of the said units are directed at each other.

EFFECT: increasing the contactless meter range of mutual displacement.

3 cl, 1 dwg