SYSTEM ESTABLISHING COORDINATES OF ROUTE OF UNDERGROUND PIPE-LINE Russian patent published in 2003 - IPC

FIELD: instrumentation. SUBSTANCE: system is meant to establish geographic coordinates of points on longitudinal axis of underground gas or oil pipe- line. System establishing coordinates of route of underground pipe-line has intratube inspection tool that comprises sealed container, elastic collars, path-control transducer, control and computation unit, register, three-component gyroscopic meter of angular velocity, three-component accelerometer, three rows of ultrasonic receiving- transmitting converters arranged over circumferences, accelerometer of wide measurement range along longitudinal axis of container, three amplifiers, signal transmitters of markers with analog-to-digital converter and controller, temperature- sensitive element. Ultrasonic receiving-transmitting converters are placed in pairs and diametrical opposition on outer surface, each row in nose, tail and center part of container includes n converters. Accelerometers are connected with their inputs to outputs of three-component meter of angular velocity. Accelerometer of wide measurement range, three amplifiers, signal transmitters of markers with analog- to- digital converter and controller, temperature-sensitive element are positioned inside container and are connected to register via first system bus. EFFECT: prevention of growth of error of establishment of coordinates of route of underground pipe- line in time. 1 cl, 4 dwg