Tunnel protection door state monitoring system based on sound recognition

Abstract

The invention discloses a tunnel protection door state monitoring system based on sound recognition, and belongs to the technical field of tunnel protection door monitoring. The tunnel protection doorstate monitoring system comprises an optical fiber probe, an output optical fiber, an optical fiber main line, a signal processing part and a voice judgment database which are arranged correspondingto a tunnel protection door; and through matching work of all parts, the vibration situation after arrangement of the tunnel protection door can be fed back in real time, and the real-time state of the tunnel protection door is judged, so that the tunnel protection door is monitored in real time. The tunnel protection door state monitoring system works based on collection and processing of sound signals, is simple in structure and easy and convenient to set, can effectively monitor the vibration state in various states of the tunnel protection door to achieve real-time monitoring during applying of the tunnel protection door, improves the monitoring continuity and accuracy of the tunnel protection door, provides possibilities early judgment and early maintenance for abnormal situations possibly occurring in the tunnel protection door, fully ensures operation safety of the tunnel, and has good application prospects and promotional value.

Description

technical field [0001] The invention belongs to the technical field of tunnel protective door monitoring, and in particular relates to a sound recognition-based tunnel protective door state monitoring system. Background technique [0002] With the continuous development of my country's rail transit construction, tunnels, as the most important part of rail transit, are also showing blowout development. In railway tunnels, caverns are often provided, and protective doors are provided in the caverns, as a fire separation measure to separate the cross passages, evacuation passages and vehicle tunnels. At the same time, when the train passes through the tunnel, due to the large ratio of the cross-sectional area of ​​the train to the cross-sectional area of ​​the tunnel, the length of the tunnel is long, and the speed of the train is fast, the train will generate a large lateral wind pressure in the tunnel, forming a "piston". effect”, which will bring hidden dangers of damage to...

AI Technical Summary

Problems solved by technology

Among them, the former judges the setting state of the tunnel protective door by monitoring the vibration state of each tunnel protective door. This setting form is susceptible to interference from other vibrations, causing misjudgment, and cannot give an alarm to the situation after the protective door falls off; while the latter By installing distributed optical fiber sensors on the tunnel protective door, it is possible to monitor the situation when the tunnel protective door falls off, and determine the position where the protective door falls off. However, this structure can only monitor the state when the protective door falls off, and cannot real-time Monitoring the normal state of the protective door, not to mention the prevention and early warning of the falling of the protective door, so there are certain limitations

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