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

A monitoring device and subway technology, which is applied to measurement devices, electrical devices, electromagnetic means, etc., can solve problems such as errors and incomplete data information, and achieve the effects of high precision, stability and safety.

Pending Publication Date: 2019-07-19
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
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Embodiment

[0027] Such as figure 1 with 2 As shown, this embodiment provides an online vibration and noise monitoring device for subways. The device deploys a front-end intelligent collection module in areas sensitive to noise and vibrations on each subway line, so that the areas involved in the test points include the station platform , public activity centers, residential areas, factories and other areas that require strict control of vibration and noise. Among them, the noise sensor is arranged at a horizontal distance of 700mm from the outer rail, and the vibration acceleration sensor is arranged at the side wall of the ballast bed 50mm below the ballast bed surface.

[0028] In this example:

[0029] The front-end intelligent collection module includes a noise sensor, a vibration acceleration sensor, and an outdoor camera. The sensing device is connected to a multi-slot Ethernet chassis for signals. The multi-slot Ethernet chassis contains multiple NI 9234 data acquisition cards a...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/06G01H11/08
CPCG01H11/06G01H11/08
Inventor 朱文发林高翔马慧珍张辉张尧王少煌
Owner SHANGHAI UNIV OF ENG SCI
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