Method and apparatus for detecting leaks in pipelines using cros

Details Method and apparatus for detecting leaks in pipelines using cros Method and apparatus for detecting leaks in pipelines using cros

1991-06-21

1993-04-27

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73 405A, G01M 300

Patent

active

052051730

ABSTRACT:
An improved method and apparatus for detecting leaks in pipelines using cross-correlation techniques including improved correlating circuitry featuring a pair of circulating delay lines for respectively receiving, temporarily storing and processing in a revolving sequence samples of input data obtained from a pair of remotely positioned sensors, a multiplying circuit for causing samples input to each channel to be multiplied by each sample stored in the circulating delay line associated with the other channel, an adder and accumulator memory for accumulating the multiplication results, and a display for displaying the correlation results.

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