On-line monitoring device and method for vibration and noise in metro

Abstract

The invention relates to an on-line monitoring device and method for vibration and noise in a metro. The on-line monitoring device wirelessly communicates with a remote monitoring center, and comprises front-end intelligence gathering modules correspondingly arranged at multiple site measuring points, the front-end intelligence gathering modules comprise sound pressure sensors, vibration acceleration sensors, outdoor cameras, NI Ethernet computer cases and industrial grade 4G routers, the NI Ethernet computer cases are correspondingly connected with the sound pressure sensors, the vibration acceleration sensors and the outdoor cameras through data acquisition cards, and wirelessly communicate with the remote monitoring center through the industrial grade 4G routers, the sound pressure sensors are arranged at a horizontal distance of 700 mm away from an outer side steel rail, and the vibration acceleration sensors are arranged at the side wall of a ballast bed 50 mm below the ballast bed surface. Compared with the prior art, the on-line monitoring device has the advantages of high acquisition accuracy, being applicable to noise and vibration sensitive areas, ensuring the stability and safety of the rail and the like.

Description

technical field [0001] The invention relates to the field of track noise reduction technology and vibration control technology, in particular to an online vibration and noise monitoring device and method for subways. Background technique [0002] People pay more and more attention to the vibration and noise caused by the operation of subway trains. Excessive noise and vibration will seriously affect people's normal work and rest, damage physical and mental health, and reduce work efficiency. When the train speed reaches or exceeds a certain critical speed, the subway will induce ground waves to cause strong vibration of the track structure, which will affect the safety and comfort of the subway operation, and in severe cases will cause damage to the track structure and train derailment. . At the same time, the propagation through ballast and roadbed will also cause strong vibration and structural noise of buildings around the track line, and noise radiation will have a grea...

AI Technical Summary

Problems solved by technology

[0003] For the current noise and vibration problems of the subway, there is only regular monitoring and inspection

There is no complete system for all-weather online monitoring and collection of subway vibration and noise, so that the collected data information is not complete, there are certain errors, and effective measures cannot be taken in time

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