LIQUID FLOW RATE METERING SYSTEM

摘要

The invention relates to a liquid flow rate metering system on board of a moving craft providing results corrected for faults due to the craft movement. A flow rate meter is provided for measurement of longitudinal and of transverse components of liquid flow rate by reference to the craft, whereas a speedometer system determines longitudinal and transverse components of the craft speed with respect to the supporting liquid bottom. An output data processor derives from the flow rate and the speed measured values a value of longitudinal and of transverse components of the flow rate at relative layer distributions with respect to the bottom. Preferably, a sonar and a flow rate meter use a single acoustic unit in a shared-time operation controlled by a master clock. Application in the determination of the speed and direction of movement of a body of fluid.