Intelligent environmental noise and vibration monitoring device and method

An environmental noise and vibration monitoring technology, which is applied in the interdisciplinary fields of traffic engineering and environmental engineering, can solve problems such as high maintenance costs, waste of resources, and inability to change functions

Active Publication Date: 2015-02-04
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, by applying the concept of FPGA-based reconfigurable intelligent instruments, after the current environmental noise test instruments are produced and finalized, problems such as inability to change functions, high maintenance costs, and serious waste of resources can be solved.

Method used

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  • Intelligent environmental noise and vibration monitoring device and method
  • Intelligent environmental noise and vibration monitoring device and method
  • Intelligent environmental noise and vibration monitoring device and method

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Embodiment Construction

[0104] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0105] [1] Sampling data calculation and processing

[0106] 1A sound level: the sound pressure level measured by the A-weighting network, expressed in LA, and the unit is dBA; at this time, the weighting network is solidified in the signal conditioning module as a circuit part; To the system control module, input the programmed FPGA matrix circuit, and use each group of 1024 or 2048 points (the distance between each point is the sampling interval or the reciprocal of the sampling rate) as a frame for digital signal processing and conversion into frequency domain signals, calculated according to the following formula Get the A-weighted sound pressure level value of each frame:

[0107] L A = 10 × lg ( Σ j ...

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Abstract

The invention provides intelligent environmental noise and vibration monitoring device and method. The device and method are characterized in that equivalent traffic flow and vehicle speed and other parameters of the road traffic in the monitoring period can be converted by a recommending device or system while the environmental noise and the road traffic noise indexes can be measured through the general sound level meter or a statistic analyzing device and a plurality of index values of the noise are measured; therefore, the field investigation of the road traffic noise can be performed conveniently; meanwhile, an FPGA (Field Programmable Gate Array) embedded system can be used for continuously expanding other synchronous detection functions of the environmental noise, so as to realize an intelligent system.

Description

technical field [0001] The invention relates to the cross technical field of traffic engineering and environmental engineering, an environmental monitoring system capable of simultaneously monitoring road traffic flow, flow velocity and noise influence, in particular to an intelligent environmental noise and vibration monitoring device and monitoring method. Background technique [0002] In order to study the impact of traffic noise on highways, national and provincial highways, and urban roads, in the technical specifications and methods of environmental monitoring, in addition to the 20-minute and continuous 24-hour day and night equivalent continuous noise level and statistical sound level that must be monitored for environmental noise In addition to impact and pollution indicators such as noise, it is also necessary to measure traffic status indicators such as traffic volume and speed at the time when noise occurs. However, this requirement generally requires some additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
Inventor 张继萍
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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