Real-time oriented measuring device for construction wide-band noise

Abstract

The invention discloses a real-time oriented measuring device for construction wide-band noise. The device comprises a microphone linear array, a preprocessing module, a space filtering module and a frequency spectrum post-processing module, wherein the microphone linear array is used for measuring a noise time domain signal; the preprocessing module is used for converting the noise time domain signal measured by the microphone linear array into a frequency spectrum in real time; the space filtering module is used for filtering background noise in real time and directionally collecting the noise sent by the construction region; the frequency spectrum post-processing module is used for integrating the collected high-frequency noise frequency spectrum with the low-frequency noise frequency spectrum to acquire the construction wide-band noise. The real-time oriented measuring device can be used for measuring the amplitude of the construction operation noise and background noise in the construction field in real time and accurately mastering the out-of-limits condition of the construction noise in real time and can meet the supervision requirements for automatic monitoring and real-time displaying of the construction noise.

Description

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

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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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