Patent
Sludge topography measurement in oil tanks
TLDR
In this paper, the velocity of sound in the oil is measured, preferably at a plurality of heights over a relatively short vertical range to determine the velocity gradient, which is then extrapolated for the entire depth of the oil.Abstract:
A method of and apparatus for determining the topography and/or volume of a layer of sludge on the bottom of an oil tank, for example, in which a sonar head (3) having a velocimeter is immersed in the oil, and a fan-shaped beam (12) of acoustic energy is swept across the layer of sludge (2). Also the velocity of sound in the oil is measured, preferably at a plurality of heights over a relatively short vertical range to determine the velocity gradient, which is then extrapolated for the entire depth of the oil. Processing means (8) determine, from the extrapolated velocity gradient, the topography and/or volume of the sludge (12). The method provides an accurate indication of the distribution and volume of sludge across the whole of the bottom of an oil tank, taking into account changes in the speed and attenuation of accoustic energy due to, for example, the temperature gradient in the oil.read more
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Patent
Fuel inventory monitoring system
TL;DR: An ultrasonic-based method for fuel inventory measurements and for the detection and characterization of materials in a fuel tank, including sludge, water, microorganisms and materials of different viscosities and densities that are present in the tank, is presented in an easy-to-interpret picture display that can be remotely located from the tank as mentioned in this paper.
Patent
Sonar transducer assembly
TL;DR: In this paper, a sonar transducer assembly for underwater imaging of an underwater environment is presented, which consists of at least one transmit-only trans-ducer element positioned within a housing and aimed outwardly and downwardly.
Patent
Systems and associated methods for producing a 3d sonar image
TL;DR: In this paper, a sonar system and transducer assembly for producing a 3D image of an underwater environment is presented. But the transducers are mounted on a watercraft and the sonar signals are transmitted into the water.
Patent
Trolling motor with a transducer array
Barry M. Antao,Clark Jeremiah +1 more
TL;DR: In this paper, a trolling device with a propeller coupled to the motor and a shaft configured to couple or mount the motor to a watercraft is described, where a sonar transducer assembly may be incorporated within the housing or nosecone including a phased array configured to transmit sonar beams into an underwater environment.
Patent
Sound-velocity dewatering system
TL;DR: In this article, a method and apparatus for an improved dewatering tank system that allows for safely controlling a water stream exiting the dewalling tank system is presented, which can include a sound velocity detector, a control system, and a control element.
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Patent
Sonar system for and method of arctic seafloor reconnaissance
TL;DR: In this paper, a pair of transducers are attached to a holder so as to form a transducer array for arctic seafloor reconnaissance using a vertically extended tube assembly rotatably supported by a tripod, which is tilted at a specified tilting angle and oriented in a specified azimuthal direction.
Patent
Continuous transmission synthetic aperture sonar
TL;DR: In this article, a synthetic aperture side scan sonar using continuous instead of pulsed transmission is used to produce a collection of frequencies with different phases at baseband where the value of the frequency represents the range of each echo producing underwater target.
Patent
Apparatus and method for locating sediment in a container
TL;DR: In this paper, a sonar transducer is mounted with a container for emitting acoustic energy into the liquid and for receiving reflected acoustic energy, which is used to locate and map sediment in a container.