A data acquisition system and method

G - Physics – 01 – S

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G01S 15/00 (2006.01) G01H 15/00 (2006.01) G01N 29/00 (2006.01) G01S 15/88 (2006.01) G01S 15/89 (2006.01) G01V 1/38 (2006.01) G01S 5/14 (2006.01)

Patent

CA 2187511

A ranging and data taking system, useful as an acoustic sediment classification system. The system launches acoustic pulses into a water column above a sediment bed of interest (seafloor, riverbed, etc.) and records echoes from the pulses. The recorded echoes are transmitted to a processor (40) which uses the echoes to classify the sediment. Disclosed between the hardware for data acquisition and the processor (40) is S-RAM or static read only memory (36). This decouples data acquisition and data processing, which increases the speed of the system sufficiently that the system can display processed data, such as sediment contour plots, in virtual real time.

Système de télémétrie et d'acquisition de données servant à la classification des sédiments par un procédé acoustique, et envoyant des impulsions acoustiques à une colonne d'eau surmontant une couche de sédiments à étudier (fond marin, lit de rivière etc.) et en enregistrant les échos renvoyés par les impulsions. Les échos enregistrés étant transmis à un ordinateur (40) qui établit une classification des sédiments. Entre le matériel d'acquisition de données et l'ordinateur (40) se trouve une mémoire RAM statique ou une mémoire ROM statique (36) qui sépare les données d'acquisition des données de traitement, ce qui accroît suffisamment la vitesse du système pour qu'il puisse présenter sensiblement en temps réel les données traitées telles que les courbes des contours des sédiments.

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