Device for rapidly measuring height of ship, and ship height exceeding early warning system and method

Abstract

The invention discloses a device for rapidly measuring the height of a ship, and a ship height exceeding early warning system and method. The device for rapidly measuring the height of the ship obtains the height difference between the highest point of a navigable ship and the ground plane through laser correlation, and then the height of the ship is obtained through calculation by combining the water level information of a measurement area and the real-time draught of the ship. The ship superelevation early warning system obtains the height information of the ship based on the rapid ship height measurement device, obtains the AIS information of the ship in combination with the AIS base station unit, fuses the obtained ship height and the AIS information on the ship superelevation early warning platform, and then performs ship superelevation early warning judgment based on the fused AIS information by the ship superelevation early warning platform. The invention further discloses a method; when the ship has the risk of superelevation, the ship superelevation early warning platform autonomously judges whether the ship is superelevation or not and actively sends superelevation early warning information to the corresponding ship.

Description

technical field [0001] The invention belongs to the technical fields of ship navigation safety and electronic information, and in particular relates to an active super-height early warning method when a ship sails through waters with different height restrictions, specifically a device for quickly measuring the height of a ship, a ship super-height early warning system and a method. Background technique [0002] As an important hub connecting the two sides of the river, the cross-water bridge plays an important role in the development of the transportation industry. In recent years, the number of water-crossing bridges, especially inland river bridges, has increased significantly. Only 115 navigable bridges have been built on the main line of the Yangtze River, and the number of water-crossing overhead lines is also increasing. At the same time, bridges / overhead lines have brought many constraints to the navigation of ships. Due to the small size of the navigation clearance ...

AI Technical Summary

Problems solved by technology

However, this patent has the following defects: 1) The measured height of the ship is not the real height of the ship, but the height of the triggered through-beam laser detector at the highest position, without considering the influence of the ship's draft and water level on the measurement results; 2 ) The distance from the lowest through-beam laser detector to the highest water level of the river is 3m. When the waterline of the ship is lower than or higher than the lowest through-beam laser detector, the true height above the waterline of the ship cannot be obtained; 3) When the ship When the actual height exceeds the highest through-beam laser detector, the height of the highest point of the ship cannot be measured; 4) The measured height of the ship cannot be used for super-high warning in the next height-limited waters. First, because the height of the ship is not the real height. The reason is that the water level in different waters is quite different and the draft of the ship will also change when the ship passes through different waters. The reliability of the ship height measured by it is not strong; 5) The detection array is in a constant working state, with high energy consumption and short life, which is not suitable for long-term application; 6) It cannot provide effective early warning for short-range collision avoidance The effect is mainly used for post-collision evidence collection; 7) Due to the different navigation clearance heights and water levels of bridges in different areas, it is only applicable to early warning of other bridges of the same level in nearby waters

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