METHOD AND DEVICE FOR DIAGNOSING TECHNICAL PARAMETERS OF UNDERGROUND PIPELINE Russian patent published in 2017 - IPC G01N27/00 

FIELD: measuring equipment.

SUBSTANCE: essence of inventions is limited to the realisation of the possibility of conducting diagnostic monitoring of technical parameters of an underground pipeline in the presence of adjacent pipelines with a current in immediate proximity - less than 2 metres. When performing diagnostic monitoring of the technical parameters of the underground pipeline, the main generator uses GPS to feed the working current to the pipeline having an installed base PFC, and the auxiliary generator uses a microcontroller to work in a pulsed asynchronous mode, which is not more than 20% of the operation time of the main generator. The time for the main generator to supply the working current to the pipeline and the time for recording this BSDU current is synchronised with GPS located in the BDSU and the generator. The isolation of the surveyed pipeline against the background of interference from adjacent pipelines is performed in the operation mode of both generators by creating a large total current in the pipeline, and also by excluding currents which differ from the base value of the PFC. Diagnostic control of the technical parameters of the underground pipeline is carried out in the auxiliary generator disable mode.

EFFECT: increased reliability and accuracy of diagnostic control during complex survey of technical parameters of underground pipeline.

4 cl, 3 dwg