Method for reading ship draught through unmanned aerial vehicle

Abstract

The invention discloses a method for reading ship draught through an unmanned aerial vehicle. The method is used in a ship inclination test, a weighing test, a liquid level telemetering correction, atrial flight or an operation process provided with a water gauge. The method comprises the following steps that an unmanned aerial vehicle is operated, a camera shooting device on the unmanned aerialvehicle faces the water gauge with a draught to be read, and the camera shooting device photographs a reading video, wherein the time length of the reading video comprises N water surface fluctuationperiods; and water gauge readings of the N water surface fluctuation periods are read according to the reading video to obtain N sets of draught values. The method has the beneficial effects of beingsimple to use and convenient to operate, greatly improving the working efficiency, increasing the reading accuracy, reducing the test cost of using a tug, and being widely applicable to various largeand medium container ships, LNG ships, LPG ships, chemical ships, roll-on roll-off ships, floating oil storage tanks, finished oil tanks, crude oil tanks, bulk freighters, passenger ships, special working ships, warships and military auxiliary ships.

Description

technical field [0001] The invention belongs to the field of ship and marine engineering construction and operation, and in particular relates to a method for reading the draft of a ship through an unmanned aerial vehicle. Background technique [0002] The draft of a ship is an important basic parameter of a ship. Accurate draft parameters are required to calculate the light ship weight, load capacity and displacement of a ship. So how to obtain accurate draft value has become the direction of common research. At present, the methods of reading draft mainly include visual reading, using draft gauge reading and liquid level telemetry reading. [0003] The visual reading method is simple and direct, and is mainly suitable for reading the draft of ships docked at the wharf. However, it is easily affected by factors such as weather, tides, waves, observation angles and personal experience, resulting in limited accuracy of the read draft value. affect the calculation results. ...

AI Technical Summary

Problems solved by technology

[0005] The method of liquid level telemetry to read the draft is commonly used by ships in operation. It is simple, intuitive and easy to operate. However, once the equipment fails, it cannot be used.

In addition, during the weighing test of the ship under construction, the liquid level remote measurement has not yet been calibrated, and the read value is not accurate enough

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