Real-time directional measurement device for construction broadband noise

Abstract

The invention discloses a real-time directional measurement device for construction broadband noise, comprising a microphone line array for measuring noise time-domain signals, and a pre-measurement device for converting the noise time-domain signals measured by the microphone line array into frequency spectrum in real time. Processing module, spatial filtering module for filtering out background noise in real time and directional acquisition of noise emitted from construction area, and spectral post-processing for integrating the collected high-frequency noise spectrum and low-frequency noise spectrum to obtain construction broadband noise module. The device can measure the construction noise and background noise at the boundary of the construction site in real time, grasp the excessive noise of construction work in real time and accurately, and meet the supervision requirements of automatic monitoring and real-time display of construction noise.

Description

technical field [0001] The invention relates to a noise measuring device, in particular to a real-time directional measuring device for broadband noise of construction. Background technique [0002] Many cities in my country are in the stage of large-scale construction. The construction period is long, there are many large-scale equipment, and the noise is sudden and persistent. Many construction sites are adjacent to residential areas, and residents' complaints caused by construction noise are increasing. It is urgent to strengthen the supervision and control of construction noise. [0003] my country stipulates the standard limits and measurement methods of environmental noise emission at the boundary of construction sites. The noise at the construction site has the characteristics of multiple sound sources and a wide frequency range, including not only the mechanical noise inside the fence, the sound of hand-held tools, the noise of construction workers, etc., but also ot...

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Problems solved by technology

[0005] 1. The background noise of the shutdown measurement will affect the construction process, so it cannot be used as a daily continuous monitoring method;

[0006] 2. It is impossible to eliminate the background noise in real time, and it is difficult to accurately grasp the actual excess of construction noise in real time, so it does not meet the regulatory requirements for automatic noise monitoring and real-time display, and is not conducive to the division of noise control responsibilities and the formulation of control measures

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