MEASURING COMPLEX FOR SEARCHING AND DIAGNOSING UNDERGROUND COMMUNICATIONS Russian patent published in 2019 - IPC G01R31/08 G01V3/11 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electric measuring equipment and can be used for evaluation of actual position and condition of underground utilities. Measuring system consists of a track search generator and a receiver. Track search generator comprises series-connected Glonass / GPS receiver, microcontroller, master oscillator and power amplifier, one output of which is galvanically connected to the analyzed object, and the other output is grounded. Track search receiver has an antenna unit, which includes two horizontal, upper and lower, two vertical, right and left, induction transducers connected to four voltage-to-current converters, which are connected in pairs to first and second signal switches, respectively, whose signal outputs through filters are connected to inputs of first and second scaling converters, and the control inputs of the switches are to the first and second control outputs of the microcontroller, the synchronizing input of which is connected to the output of the Glonass / GPS receiver, and the third output is connected to the recording device. In addition, four synchronous detectors and two DDS generators are introduced. Links of elements together form a device allowing to exclude transmission of compared parameters over a radio channel, and formation of a reference signal is realized by synchronizing the generator and receiver with signals from Glonass / GPS receivers, replacing the estimation of signal parameters from discrete samples by wideband and noise-immune optimum correlation processing of signals.

EFFECT: improving reliability and authenticity of diagnostics of underground utilities.

1 cl, 1 dwg