Draught depth measuring device and control method for inland river departing ships on board

Abstract

A ship-side-hanging inland river departure ship draft measurement device is composed of a support, two transmission devices, two sliding blocks, a receiving and transmitting integrated ultrasonic probe and a receiving type ultrasonic probe. The two ultrasonic probes form a linkage device and coordinated operation through the support, the transmission devices and the sliding blocks, and therefore the outline of a ship is accurately scanned. The ship-side-hanging inland river departure ship draft measurement device has the advantages of being simple in structure, low in cost, capable of being carried on a law enforcement ship and performing maneuvering detection along with the ship, high in detection efficiency and quite suitable for monitoring inland waterways.

Description

technical field [0001] The invention relates to a ship draft depth detection technology, in particular to an on-board type inland river departure ship draft depth measurement device and a control method thereof. Background technique [0002] Inland waterway shipping has outstanding advantages such as less land occupation, large transport capacity, low energy consumption, and low cost. It is an important part of my country's comprehensive transportation. While the water transportation capacity of the inland waterway continues to develop, the load capacity of the inland waterway ships is also showing a trend of increasing. Ships overdraft and stranded accidents occur from time to time, which not only lead to damage to ships and suspension of navigation in the waterway, but also cause a large number of ships to be stranded, resulting in huge economic losses and social impact. Extremely bad. At present, domestic and foreign ship draft inspections still mainly rely on traditional...

AI Technical Summary

Problems solved by technology

There are several methods for measuring ship draft and disembarkation based on sonar detection technology: (1) fixed side wall sonar array measurement method, a large number of sonar signal generator arrays are installed vertically on one side of a certain section of a river bank or navigation hole pier, The sonar signal receiver array is installed at the corresponding position on the other side, and the draft depth of the ship is converted according to the number of sonar blocked by the ship. This method can only be used in special areas with narrow waters such as ship locks and ship lock approach channels, and cannot be applied in practice. In natural rivers; (2) The underwater sonar array fixed measurement method, a large number of sonar devices are installed on the river bottom track, and the sonar signal is launched vertically upward at the same time. When the ship passes by, the distance from the track to the water surface and the bottom of the ship is measured. The ship’s draft can be obtained by subtracting it. This method is only applicable to stable and controllable artificial environments like ship locks; (3) The double depth sounder detection method uses two sets of depth sounders and a pressure sensor to form a dynamic detection system for the ship’s draft. This method requires high installation accuracy

The first three methods cannot meet the disembarkation detection requirements of the waterway management department; (4) The multi-beam sonar side-scan measurement method is evolved on the basis of the multi-beam bathymetry technology, and the side-scan sonar equipment can theoretically be installed in law enforcement The side of the ship dynamically detects the actual draft of the detected ship in motion, but it is susceptible to interference from the bottom echo, which affects the measurement accuracy and sonar image quality. Affected by technical barriers, there are still many difficulties in technology development

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