Ship displacement measuring apparatus and its measurement method

Abstract

The invention relates to a device for measuring water displacement of ships and a measurement method thereof. The device comprises a measurement table and a device for measuring surface coordinates of an underwater ship body. The device for measuring surface coordinates of underwater ship body adopts non-contact distance measurement with an ultrasonic or laser method, and is composed of distance meters and a control mechanism that are disposed on the measurement table. The distance meters are installed on the bottom surface and two side surfaces of the measurement table, and the number of the distance meters is determined according to the size of the measurement table. The method for measuring water displacement of ships comprises the methods of measuring surface coordinates of ship body and of calculating water displacement. The invention has the advantages of simple operation and good reliability, can real-time measure the water displacement of ships, the measurement accuracy can satisfy the cargo weight measurement standards of China, and the invention can adapt the unfavorable measurement conditions, such as waves with certain amplitude and vertically and horizontally swinging of the ship body, so as to ensure to record the draft and water displacement on the premise of not affecting normal navigation of ships. The invention is suitable for measuring the water displacement during normal navigation of ships.

Description

technical field [0001] The invention relates to a displacement measurement device and a measurement method thereof, in particular to a ship displacement measurement device and a measurement method thereof. Background technique [0002] For the measurement of ship displacement and bulk cargo weight, the method of converting from ship draft is usually adopted at home and abroad. In order to facilitate the manual observation of the draft value, there are water gauges in the middle, bow and stern of both sides of the hull, corresponding to the load of different drafts of the ship, usually made into a "water gauge and load comparison table", which can be interpolated by draft Calculate ship displacement and deadweight. [0003] The main problems of manually observing the water gauge to determine the draft value are: the observer needs to master certain skills, and it is difficult to read accurately; There will be a large error (often exceeding the ship's bulk cargo load measure...

AI Technical Summary

Problems solved by technology

[0003] The main problems of manually observing the water gauge to determine the draft value are: the observer needs to master certain skills, and it is difficult to read accurately; There will be a large error (often exceeding the ship's bulk cargo load measurement standard)

Its disadvantages are: the device needs special personnel to carry it on board for measurement, and it is suitable for ships berthing at the port, but it is not suitable for real-time measurement of ship displacement and load under sailing state; Determination of Ship Displacement and Cargo Capacity

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