Dynamic detection system and method for ship draught

Abstract

The invention relates to the technology of ship draught detection, in particular to a method and a system for detecting the over-draught of a ship. The detection system comprises an underwater detection subsystem, an overwater detection subsystem and a data processing subsystem, wherein the underwater detection subsystem comprises a lifting bracket, a laser array, an underwater camera, wherein the laser array at least comprises a first laser transceiver which is arranged on the lifting bracket, and the transmitting direction of the first laser transceiver is horizontal; the overwater detection subsystem comprises a power mechanism, a CCD camera, a GPS receiver and a laser light source, wherein the power mechanism is used for controlling the operation of the lifting bracket; and the data processing subsystem is electrically connected with the underwater detection subsystem and the overwater detection subsystem, and when the first laser transceiver receives reflected laser, the data processing subsystem alarms. In addition, the detection system can perform dynamic detection on a detection ship in real time and improve the detection efficiency, and also can calculate the draught depth of the ship by using an image processing algorithm and improve the detection accuracy.

Description

technical field [0001] The invention relates to a ship draft detection technology, in particular to a detection method and a detection device for a ship (super) draft. Background technique [0002] The draft of a ship refers to the depth of the submerged part of the hull due to its own weight or load. The draft value of a ship reflects the displacement and cargo weight of the ship. "Overdraft" refers to the fact that some domestic inland river vessels are loading and sailing beyond the water depth standard for channel maintenance in pursuit of economic interests, or exceed the maximum draft value allowed by the vessel due to overloading. The "overdraft" of a ship will not only damage the hull and endanger the lives of the crew, but may also cause grounding, thereby destroying the channel, which is extremely harmful. [0003] At present, the existing ship draft detection methods mainly include manual observation, ultrasonic water gauge, laser water level gauge and pressure s...

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Problems solved by technology

There are also detection methods that do not affect navigation, such as "a ship drainage measurement device and its measurement method" mentioned in the application number 200710169069.7 Chinese invention patent application, which uses a measurement device fixedly installed on the river bed and the underwater part of the river bank , and the Chinese invention patent "ship draft over-limit early warning system and early warning method" with the authorized announcement number CN 101628612A mentions that by setting a horizontal rod that can be lifted up and down underwater in the gateway, the height when the horizontal rod is in contact with the bottom of the ship is detected Although the method of draft over-limit alarm can realize non-contact detection, due to the complicated underwater situation, the detection accuracy is greatly disturbed by eddies, sundries, etc., and the installation and maintenance of the device are inconvenient

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