Video monitoring system and method for miter gate gap of ship lock

Abstract

The invention discloses a video monitoring system and method for a miter gate gap of a ship lock. The system comprises a camera, a video transmission system and an image processing system. A 12V outdoor monitoring LED light supplement lamp and an infrared night vision camera are installed at the closing end position of a miter gate, a door slot video image is transmitted to a ship lock centralizedmonitoring system through a ship lock in-situ optical transmitter and receiver, and the real-time monitoring function of the miter gate gap is achieved. Image graying processing, median filtering denoising, image threshold segmentation, BP neural network algorithm edge detection, edge pixel refinement processing and door gap edge discrete point extraction are carried out on a door slot image, Hough transform method linear fitting, system calibration and mathematical conversion are carried out on the discrete points, and the measurement function of the miter gate door slot is achieved. Real-time monitoring of the closing condition of the miter gate of the ship lock and non-contact real-time measurement of the size of the gate gap can be achieved, reliable water retaining of the miter gateand normal circulation of the operation process of the ship lock are ensured, and door body jamming deformation caused by abnormal closing of the miter gate is prevented.

Description

technical field [0001] The invention relates to a video monitoring system and method, in particular to a video monitoring system and method for a seam of a miter gate of a ship lock. Background technique [0002] The ship lock is a cascade water conservancy project built on the inland waterway, composed of lock walls, gates, valves, etc., which exerts huge flood control and shipping benefits. The normal operation of the lock is controlled by the locking conditions of several parameters. Among them, the closing gap of the miter gate is one of the key parameters of the lock operation, which plays a vital role in the flow of the lock operation program and the reliable water retaining device of the miter gate. The existing gate gap measurement method of the ship lock adopts the form of a proximity switch, which cannot quantify the specific size of the gate gap, and the ship lock operator cannot grasp the alignment of the miter gate in real time. [0003] Chinese patent document...

AI Technical Summary

Problems solved by technology

The existing gate gap measurement method of the ship lock adopts the form of a proximity switch, which cannot quantify the specific size of the gate gap, and the ship lock operator cannot grasp the alignment of the miter gate in real time

[0003] Chinese patent document CN201810942094.2 discloses a monitoring system for the closing and centering state of the miter door of a ship lock. The PSD photoelectric sensor detection device is used for real-time measurement of the door gap of the miter door. The PSD laser target is sensitive to light interference, and the door gap measurement The value is prone to jump, which cannot meet the accuracy and stability requirements of the lock for door gap measurement

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