Leak noise correlator apparatus
First Claim
1. A leak noise correlator apparatus which comprises first and second data logging units having respective acoustic transducers connected to them, each data logging unit being arranged to record electrical signals from its acoustic transducer to provide a data record, and one said unit including means to communicate an initialising signal to the other said unit to synchronise the substantially simultaneous acquisition of signals by the two said units, the apparatus further comprising means to cross-correlate the data records acquired by the respective said unit.
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Accused Products
Abstract
A leak noise correlator apparatus comprises first and second data logging units having acoustic transducers connected to them for application to a fluid-carrying pipe either side of a suspected leak. One data logging unit is arranged to communicate an initialising signal to the other unit to synchronise the substantially simultaneous acquisition of signals by the two units. This initialising signal is communicated by an infra-red link when the two units are brought together prior to installation at their respective sites on the pipe. Subsequent cross-correlation of the acquired data records determines the location of the leak.
18 Citations
8 Claims
- 1. A leak noise correlator apparatus which comprises first and second data logging units having respective acoustic transducers connected to them, each data logging unit being arranged to record electrical signals from its acoustic transducer to provide a data record, and one said unit including means to communicate an initialising signal to the other said unit to synchronise the substantially simultaneous acquisition of signals by the two said units, the apparatus further comprising means to cross-correlate the data records acquired by the respective said unit.
Specification