Ship load-carrying measuring method based on sonar system

Abstract

The invention discloses a method for measuring ship load based on a sonar system. Firstly, the sonar system is used to scan the position of each point at the bottom of the hull, and then the scanning data of each point at the bottom of the hull are sent to a host computer in real time, and the host computer adopts a modeling calculation algorithm Establish a three-dimensional model of the underwater part of the hull and calculate the displacement volume of the hull to obtain the displacement weight, and finally calculate the load of the ship according to the law of buoyancy. The invention uses an independently integrated sonar system to scan the hull, and then performs modeling and calculation to obtain the load of the ship. The scanning data is accurate, and the volume of the ship obtained after modeling has high accuracy, thereby ensuring more accurate measurement data of the load of the ship.

Description

technical field [0001] The invention relates to the field of ship load measurement, in particular to a ship load measurement method based on a sonar system. Background technique [0002] The most commonly used method in the market is to measure the weight of the ship by observing the waterline. This method requires the observer to have certain professional knowledge and needs to cooperate with the hydrostatic curve. It is not only difficult to read but also difficult to read accurately. Therefore, this method can only deal with occasions where the accuracy is generally not high. [0003] In addition, it has been proposed to use a small ultrasonic module installed underwater or a laser array device to scan the hull to obtain the displacement volume, (quoted from a patent: a ship displacement measurement device and its measurement method; Patent No.: CN 101216338A), but the small Ultrasonic modules and lasers are highly susceptible to the influence of water pressure and water...

AI Technical Summary

Problems solved by technology

[0002] The most commonly used method in the market is to measure the weight of the ship by observing the waterline. This method requires the observer to have certain professional knowledge and needs to cooperate with the hydrostatic curve. It is not only difficult to read but also difficult to read accurately. Unclear and the impact of the hull swing, so this method can only be used in occasions that generally do not require high accuracy

[0003] In addition, it has been proposed to use a small ultrasonic module or laser array device installed underwater to scan the hull to obtain the displacement volume, (quoted from the patent: a ship displacement measurement device and its measurement method; Patent No.: CN 101216338A), but the small Ultrasonic modules and lasers are highly susceptible to the influence of water pressure and water quality underwater, resulting in insufficient concentration of their directionality and the inability to accurately obtain the distance from each point on the hull surface to the device. In addition, multiple ultrasonic sensor modules need to be connected in parallel and need to be connected together. The scanning of the hull can only be realized by the movement of the hull through the upper part of the ultrasonic sensor array. The shaking of the hull during the movement or the unsatisfactory route will have a great impact on the measurement accuracy.

Images