Inland river ship height exceeding alarm system and method based on laser distance measurement and radar images

Abstract

The invention discloses an inland river ship height exceeding alarm system and method based on laser distance measurement and radar images. The system comprises a laser distance measurement device, amonitoring radar device and an alarm device mounted at the critical height of a bridge on both sides of a river bank, wherein the laser distance measurement device is used for acquiring a distance S between a laser transmission end and an obstacle, the monitoring radar device is used for acquiring the radar images of the river, a data processing center is used for determining whether a passing height exceeding ship exists according to the difference of the distance S between the laser transmission end and the obstacle and width W of the river and determining whether a passing height exceedingship exists according to the radar images, if yes, an alarm signal is emitted, and the alarm device is used for emitting acousto-optic alarm according to the alarm signal. The system is advantaged inthat whether the height of the ship surpasses the limit can be accurately determined, a problem of false alarm caused by blocking of laser beams by birds, rain or other interferent can be avoided, andthe system is of great importance to navigation safety for inland river ships.

Description

technical field [0001] The invention relates to the technical field of ship engineering, in particular to an inland water ship superelevation alarm system and method based on laser ranging and radar images. Background technique [0002] Inland rivers play a pivotal role in my country's shipping industry. As a cross-river land transportation structure, bridges have a great role in improving road traffic conditions and ensuring the smooth flow of roads and railways in our country, and have great economic benefits for road and railway transportation. But at the same time, the bridge is an obstacle on the water to the channel, which increases the difficulty and risk for the safe navigation of the ship. With the development of water transportation, the number of ships underway and the construction of bridges are increasing, and the trend of large-scale ships is becoming more and more obvious. It is also becoming more and more difficult for large ships to cross the bridge. The s...

AI Technical Summary

Problems solved by technology

The laser line can be regarded as the height warning line of the ship. If the water part of the ship is higher than the warning line, it will block the laser beam when it sails to the laser detection area, resulting in obvious changes in the laser detection data

[0004] However, in practical applications, the deviation of the laser beam is prone to cause the receiver to receive signal interruption and cause false alarms, and obstacles such as birds and rain may also block the laser beam and cause false alarms. Relatively speaking, the false alarm rate is relatively high.

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