System and method for controlling constant-flow ship lock based on liquid level differences

Abstract

The invention discloses a system and a method for controlling constant-flow ship lock based on liquid level differences. The system comprises an upstream / lock chamber / downstream liquid level detection device of the ship lock, an upper / lower lock head of the ship lock, an upper / lower lock head opening instrument of the ship lock, an upper / lower lock head filling / discharging water pump of the ship lock, a lower computer central controller PLC, a lock head opening-closing machine control cabinet of the ship lock and an upper computer monitoring PC, wherein liquid level signals output by the liquid level detection device of a laser distance measuring instrument of a double two out of two structure are processed by using a double two out of two algorithm. By virtue of the laser distance measuring instrument, the defect of a water level meter based on a pressure mechanism can be eliminated; by virtue of the double two out of two technology, the accuracy and the reliability of liquid level detection are improved; a multi-mode subsection control algorithm is used for controlling the constant-flow ship lock based on the liquid level differences under the assistance of the upper / lower lock head filling / discharging water pump of the ship lock; different control strategies are designed according to different liquid level differences between the water level of the lock chamber and the upstream / downstream water levels of the ship lock; by virtue of the multi-mode subsection control, the safety and the efficiency indexes of the ship lock are improved.

Description

technical field [0001] The invention belongs to the technical category of ship lock control, and in particular refers to a constant flow ship lock control system and method based on liquid level difference based on the existing ship lock control system architecture. Background technique [0002] my country is a country rich in inland water transportation resources. There are about 1,600 rivers with a drainage area of ​​more than 1,000 square kilometers. The total navigable mileage of inland waterways is 123,700 kilometers; of which, 61,500 kilometers are graded waterways, accounting for 49.8% of the total navigable mileage. The navigable mileage of the six major water systems are: the Yangtze River 64,016 kilometers, the Pearl River 15,952 kilometers, the Yellow River 3,333 kilometers, the Beijing-Hangzhou Canal 1,410 kilometers, the Minjiang River 1,973 kilometers, and the Huaihe River 17,201 kilometers; in addition, water transportation resources also involve the waters of ...

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned beneficial explorations have certain reference value, but there are still limitations in the exploration results

Images