An all-optical network ship lock miter door health status monitoring system and its working method

Abstract

The invention discloses an all-optical network ship lock miter gate health status monitoring system, and a working method of the system. The monitoring system comprises an optical fiber grating strain monitoring sub-system, an optical fiber crack monitoring sub-system, an optical vibration monitoring sub-system, a demodulation system, a database management system, and a PC monitoring system. The system and the method provided by the invention have the advantages that optical fibers are used as a transmission medium, so that a high transmission rate, high anti-interference capability, and high stability and reliability in year-round operation are achieved, and power supply and loop forming are avoided; optical-electrical conversion of signals is only carried out after the signals enter the demodulation system, so that the waterproof and moisture-proof performances are greatly improved; the all-optical network system is constructed through a linear structure of sensors, the optical fibers, a demodulation device, network cables and a computer, so that the integration level is high, and uniform management, debugging and maintenance are facilitated; and through the system and the method, the safety and health statuses of a ship lock during the whole operation can be learned and understood in a real-time manner, and reasonable suggestions regarding ship lock overhauling and maintenance can be further provided.

Description

technical field [0001] The invention is applied to the field of health state monitoring of the miter gate of a ship lock, and in particular relates to a health state monitoring system and a working method of the miter door of a ship lock. Background technique [0002] The Three Gorges and Gezhouba ship locks are important water conservancy hubs in the middle and upper reaches of the Yangtze River. With the rapid development of the Yangtze River shipping industry in recent years, the annual throughput of the ship locks has increased rapidly, and their key role in the shipping function of the golden waterway of the Yangtze River has become increasingly evident. However, with the full load or even overload operation of the ship lock, its structural safety hazards have become more and more prominent. The miter gate of the ship lock works under the condition of low speed and heavy load for a long time. With the increase of the gate opening and closing times, the contact surfaces ...

AI Technical Summary

Problems solved by technology

When the excitation frequency is close to the natural frequency of the miter door, it will cause the door body to resonate, resulting in stress concentration, which will affect the steel structural components such as the door body, AB rod, back tie rod, top hinge, and bottom hinge of the ship lock miter door. have a destructive effect

When the structural damage accumulates to a certain extent, it will cause serious consequences such as the breakage of the AB rod / back tie rod and cracks in the deep water area of ​​the door body, which will not only affect the safety of navigation, but also bring serious social impact and economic losses

[0003] In order to ensure the safety of the ship lock structure, at present, regular suspension of navigation and manual maintenance and six-year overhaul are adopted, which not only affects the channel transportation, but the most important thing is that manual inspection cannot achieve real-time monitoring, and there is a possibility of missed inspection, which poses a great safety hazard

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