Method and device for active noise reduction for industrial noise treatment

An industrial noise and noise reduction technology, applied in the direction of sound-generating equipment, speech analysis, instruments, etc., can solve the problems of weakening driving force, high price, losing the public market, etc., to avoid the influence of phase difference offset, save electrical devices, simplify The effect of mechanical structure

Active Publication Date: 2015-12-09
云南飞侬科技有限公司
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AI Technical Summary

Problems solved by technology

The high-end and special-purpose orientation and the traditional manufacturing thinking mode make the composition of the active noise reduction device very complicated and the price is very expensive
As a result, it almost lost its market competitiveness and lost the public market
And then seriously weaken the driving force of the public to develop such products

Method used

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  • Method and device for active noise reduction for industrial noise treatment
  • Method and device for active noise reduction for industrial noise treatment
  • Method and device for active noise reduction for industrial noise treatment

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specific Embodiment

[0057] Such as Figure 1-3 As shown, the method of the present invention is described as an example with the blower fan noise control for industrial dust removal system:

[0058] According to production needs, there are at most N production equipment 21 in production, and at least one production equipment 21 is in operation. The system piping system 22, dust collector 23, fan 24, active noise reduction device 25 and exhaust port 26 are designed to meet the production and operation needs of multiple working conditions. According to the production status, there are limited N kinds of working conditions for the fan 24, that is, there are N kinds of noise spectrums, but the noise is relatively stable under the same working conditions. The noise measured at the exhaust port is the exhaust noise, which includes the composite result of noise waves in complex processes such as the combined superposition and interference of various noises in the system.

[0059] 1. Actual measurement...

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Abstract

The invention discloses a method and a device for active noise reduction for industrial noise treatment, aiming at providing the method and the device for the industrial noise treatment which is high in noise processing effect and low in the cost. The method for active noise reduction for industrial noise treatment comprises steps of (1) practical measurement and sampling modeling, (2) industrial personalized modulation, (3) field application simplification, and (4) informatization remote service. The device for active noise reduction for industrial noise treatment comprises a tubular sound insulation body, a secondary sound source protective housing installed inside the sound insulation main body along the axis of the sound insulation main body through a support, two secondary loudspeakers which are installed in the secondary sound source protective housing back to back through a fixed seat, a controller equipped with a personalized modulating subsonic sound code mode and mode switching programming as required in a claim of right, and two flow-guiding sound transmission protective housings which are installed on two ends of the secondary sound source protective housing; and the controller is arranged on the outside of the sound insulation main body and is electrically connected to the secondary loudspeaker.

Description

technical field [0001] The invention relates to the technical field of noise control, in particular to an active noise reduction method and device for industrial noise control. Background technique [0002] Compared with passive noise reduction (that is, passive noise reduction), active noise reduction (that is, active noise reduction) is the most promising technology for noise control. The technology is based on the basic physical principle of anti-phase acoustic interference and destructive interference. The starting point of its application can be traced back to 1933 when the German physicist Pau Lueg obtained the first patent. After more than 80 years, many people have made great efforts to this end, and now there are hundreds of monographs, papers, and nearly 100 patents granted by various countries in the world. However, the application of this technology, especially in the civilian field, is rare. It is believed that there are three main reasons: [0003] 1. Drive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208G10K11/175
Inventor 邝勇兴胡寅王勇刘杰黄继友
Owner 云南飞侬科技有限公司
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