Ship lock operation dynamic water level monitoring method based on multiple sensors at single point

Abstract

A ship lock operation dynamic water level monitoring method based on multiple sensors at a single point comprises a water level monitoring system, and the water level monitoring system comprises fiber bragg grating sensor groups, a distribution box, an optical cable, a fiber bragg grating demodulator and a central processing system. The number of the fiber grating sensor groups is multiple, one fiber grating sensor group is arranged at each measuring point, any one fiber grating sensor group is formed by connecting a plurality of fiber grating sensing units with different reflection wavelengths on an optical fiber in series, and the water level can be detected by a plurality of sensors at the single point. The fiber grating sensor groups are connected with the distribution box, the distribution box is connected with the fiber grating demodulator through an optical cable, and the fiber grating demodulator is connected with the central processing system. According to the system, the water level monitoring function that the high-water-head ship lock works and checks at the same time is achieved, the reliability of ship lock operation water level control is improved, and the cost of a single-point multiple-water-level-gauge measuring mode is reduced; and meanwhile, the anti-interference performance of the water level sensing equipment is improved, and the replacement period of the water level sensing equipment is prolonged.

Description

technical field [0001] The invention relates to the technical field of ship lock water level monitoring, in particular to a dynamic water level monitoring method for ship lock operation based on multiple sensors at a single point. Background technique [0002] The ship lock water level measurement and reporting system is related to the safety of the ship lock operation, and the ship lock water level gauge occupies a more important position in the sensor types used in the control system. The difference signal of the ship lock water level gauge participates in the control of key processes such as the flat pressure opening and closing of the ship lock gate, water level safety, valve sound vibration suppression, and reverse water head suppression. , There is also the control of the relative accuracy of single water level comparison with low requirements; both the control of the process display and the control of the state reversal signal converted into a Boolean quantity. At pr...

AI Technical Summary

Problems solved by technology

[0005] At present, the water level gauges used in the Three Gorges ship lock are imported products, which are expensive, and the sensor probes are easily affected by the underwater environment, and the working performance decreases rapidly, and the replacement cycle is short

There is still a gap between similar domestic products, and it is possible to obtain them through selective methods, but the cost is high; and there is great uncertainty in the supply of spare parts

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