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Underwater positioning system

An underwater positioning and fixed position technology, applied in the field of beacon systems and submarine metering systems, can solve problems such as reducing visibility

Active Publication Date: 2017-08-29
에프엔브이아이피비브이
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This in turn further reduces visibility due to backscattering

Method used

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Examples

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Embodiment Construction

[0101] figure 1 A schematic diagram of an underwater positioning system 1 according to a first embodiment of the present invention is shown. The system comprises an ROV 2 and a beacon 4, both suitable for subsea operation, with the beacon located on the seabed 6. ROV 2 includes a photogrammetry camera 10 , an acoustic transceiver 12 , an orientation sensor 14 , a processor 16 , and a communication interface 18 connected by an umbilical 20 . The ROV 2 may be ordinary conventional equipment as used for underwater operations and surveys and will be further provided with all required facilities for manipulating itself and other objects and for communicating with the surface. It will also be appreciated that although embodiments are described with reference to ROVs, the same principles can be applied to fully autonomous vehicles, as well as handheld rovers carried by divers, and the like. The camera 10 is a calibrated wide-angle camera with a field of view of approximately 120 de...

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Abstract

An underwater positioning system (1) provides position information for a rover (2), moveable within a reference frame. The system may comprise: at least one beacon (4) having a light source (30), located at a fixed position within the reference frame; an underwater imaging device (10), moveable with the rover in the reference frame to observe the light source from different viewpoints and determine direction data representing a direction or change in direction of the light source with respect to the imaging device; an orientation sensor (14), associated with the imaging device to determine an orientation of the imaging device with respect to the reference frame and generate orientation data; and a scaling element (12,28,111,113,115,330a-c) for providing scaling data representative of a distance between the imaging device and the light source. Various different beacons may be provided. In alternative system implementations, the locations of light source(s) and underwater imaging device are reversed between rover and beacon(s).

Description

technical field [0001] The present invention relates to a method and system for positioning in an underwater environment and more particularly to a system of beacons for such use. The invention also relates to a subsea metrology system for determining the relative position and orientation of two objects. Background technique [0002] During underwater operations, it is often necessary to accurately identify the position and / or orientation of an object, either in absolute terms or relative to another object. Such objects may include oil pipelines and flanges, engineering structures, geological formations, salvage projects, and the like. Currently, a great deal of work is being done in this context using Remotely Operated Vehicles (ROVs). However, it will be appreciated that similar issues apply in the case of human divers, manned diving equipment, and unmanned autonomous submersible vehicles (AUVs) and that the invention is equally applicable to all underwater vehicles. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/16G01S1/70B63C7/26
CPCB63C7/26G01S5/16G01S2201/07G05D1/0692
Inventor 阿尔努德·马尔科·容斯玛卡尔·索尼尔
Owner 에프엔브이아이피비브이
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