Title :
Acoustic Direct Reading Current Meter
Author :
Robbins, Richard J. ; Morrison, Geoffrey K.
Author_Institution :
Neil Brown Instrum. Syst., Cataumet, MA, USA
Abstract :
The acoustic Direct Reading Current Meter measures water currents by detecting the differential travel time of acoustic signals propagated in opposite directions along the same fluid path. The two paths are Parranged to resolve two axes of fluid flow (e.g., ocean currents) relative to the instrument housing. A saturable core magnetometer compass measures the horizontal components of the local magnetic field. Current and compass, along with the temperature data and other optional parameters, are transmitted by cable to a microprocessor-based data terminal. The data is processed by the terminal and is presented in a variety of direct reading formats.
Keywords :
acoustic measurement; acoustic signal processing; automatic meter reading; compasses; electric current measurement; flow measurement; magnetometers; microprocessor chips; oceanographic techniques; underwater sound; acoustic direct reading current meter; acoustic signal propagation; compass; fluid flow; instrument housing; microprocessor based data terminal; saturable core magnetometer; water current measurement; Acoustic measurements; Acoustic propagation; Acoustic signal detection; Current measurement; Fluid flow; Magnetic field measurement; Oceans; Sea measurements; Signal resolution; Time measurement;
Conference_Titel :
OCEANS 81
Conference_Location :
Boston, MA
DOI :
10.1109/OCEANS.1981.1151666
