阅读说明：本技术 一种方舱的降噪方法 (Noise reduction method for shelter ) 是由 张宝彬 郜沁宇 蒋晶 考书婷 侯振宇 于 2020-03-02 设计创作，主要内容包括：本发明公开一种方舱的降噪方法,通过明确被关注点的噪音要求及产生噪音的噪音源、确定每个噪音源噪音指标和修正系数和针对噪音源的传递路径采取降噪措施的步骤实现。本发明对于指挥通信类的方舱,为保障人员语言交流,对方舱的噪音有一定的要求,较低的环境噪音,是作战效能提高的保证,同时提高了方舱的舒适性和品质。(The invention discloses a method for reducing the noise of a shelter, which is realized by the steps of defining the noise requirement of a concerned point and a noise source generating the noise, determining the noise index and the correction coefficient of each noise source and taking noise reduction measures aiming at the transmission path of the noise source. The invention has certain requirements on the noise of the shelter for the communication command shelter and the voice communication of the personnel, has lower environmental noise, is the guarantee of the improvement of the combat efficiency, and simultaneously improves the comfort and the quality of the shelter.)

1. A method for reducing noise of a shelter is characterized by comprising the following specific steps:

the first step is to clarify the noise requirement of the point of interest and the noise source generating the noise

Firstly, according to the requirements of users or the requirements of relevant standards, the noise requirement of the concerned point in the shelter is determined, wherein the concerned point refers to the riding position of passengers in the shelter and the ear height of the position of frequently operated equipment;

secondly, defining the main noise sources in the square cabin, including: power stations, air conditioners, ventilation fans and equipment in the cabin;

second step, determining noise index and correction coefficient of each noise source

According to the principle of noise superposition, the method is expressed by using the formula (1):

the top-down design principle is adopted, so that the noise index requirement L meets the user requirement, and each noise source is assigned with a noise index L_i(ii) a Giving a correction coefficient to different types of noise sources, wherein the correction coefficient is used for distinguishing the weight of the influence of different types of noise sources on the integral noise of the shelter, and the correction coefficient distributed to the noise source with larger influence on the integral noise of the shelter is larger; the correction coefficient is determined according to the noise magnitude and the influence time of the noise source;

thirdly, taking noise reduction measures aiming at the transmission path of the noise source

Even if each noise source can meet the requirement of the corresponding noise index, the noise of the concerned point can not meet the index requirement due to the relatively complex environment in the shelter, and corresponding measures are required to be taken on the noise source and the transmission path thereof for noise reduction treatment; adding a baffle plate on the transmission path of the noise so as to change the transmission path of the noise; sound-absorbing or sound-insulating materials are adhered to proper positions in the shelter, so that the noise of the concerned points is further reduced, and the noise of the concerned points meets the use requirement.

2. A method of reducing the noise of a shelter as claimed in claim 1, wherein L in formula (1) -total sound pressure level, i.e. noise level requirement, L_iThe sound pressure level of the noise sources, i.e. the specification requirement of each noise source.

Technical Field

The invention relates to a noise reduction method, in particular to a noise reduction method of a shelter.

Background

In modern war environments, the noise hazard to the human body is systemic, and can cause changes in the auditory system and production impact on the non-auditory system, and the relatively strong noise in long-term contact can cause pathological changes, the noise in the job site can affect language communication, affect work efficiency and even cause accidents, especially for communication command shelter, enough low environmental noise must be ensured, and the present US GYK MI L-STD-1474D proposes that the basic index of not more than 75dB, namely occasional telephone calls, radio calls or occasional calls within 1.5m distance, should be met, so the communication command shelter must effectively reduce the environmental noise.

The existing noise reduction method comprises the following steps: the noise of the equipment installed in the cabin is not effectively required in the initial design stage, and the vibration reduction and noise reduction design is only carried out on the transmission path of the noise, so that the noise reduction is not targeted, and the noise reduction effect is not ideal.

Disclosure of Invention

The invention aims to provide a method for reducing noise of a shelter, and solves the problems that the prior method has no pertinence in noise reduction and the noise reduction effect is not ideal.

The method for reducing the noise of the shelter comprises the following specific steps:

the first step is to clarify the noise requirement of the point of interest and the noise source generating the noise

Firstly, according to the requirements of users or relevant standards, the noise requirement of the concerned point in the square cabin is determined, and the concerned point refers to the riding position of passengers in the square cabin and the position of frequently operating equipment at the height of human ears.

Secondly, defining the main noise sources in the square cabin, including: power stations, air conditioners, ventilation fans and cabin equipment.

Second step, determining noise index and correction coefficient of each noise source

According to the principle of noise superposition, the method is expressed by using the formula (1):

l in formula (1) -total sound pressure level, i.e. noise index requirement;

L_ithe sound pressure level of the noise sources, i.e. the specification requirement of each noise source.

The top-down design principle is adopted, so that the noise index requirement L meets the user requirement, and each noise source is assigned with a noise index L_i. And simultaneously giving a correction coefficient to the different types of noise sources, wherein the correction coefficient is used for distinguishing the weight of the influence of the different types of noise sources on the integral noise of the shelter, and the correction coefficient distributed to the noise source with larger influence on the integral noise of the shelter is larger. The correction coefficient depends on the noise magnitude and influence of the noise sourceAnd (4) making a determination.

Thirdly, taking noise reduction measures aiming at the transmission path of the noise source

Even if each noise source can meet the requirement of the corresponding noise index, the noise of the concerned point can not meet the index requirement due to the relatively complex environment in the shelter, and corresponding measures are required to be taken on the noise source and the transmission path thereof for noise reduction treatment; adding a baffle plate on the transmission path of the noise so as to change the transmission path of the noise; sound-absorbing or sound-insulating materials are adhered to proper positions in the shelter, so that the noise of the concerned points is further reduced, and the noise of the concerned points meets the use requirement.

The invention has certain requirements on the noise of the shelter for ensuring the language communication of the command communication shelter and the personnel, has lower environmental noise, is the guarantee of the improvement of the combat efficiency, and simultaneously improves the comfort and the quality of the shelter.

Detailed Description

The method for reducing the noise of the shelter comprises the following specific steps:

the first step is to clarify the noise requirement of the point of interest and the noise source generating the noise

Firstly, according to the requirements of users or relevant standards, the noise requirement of the concerned point in the square cabin is determined, and the concerned point refers to the riding position of passengers in the square cabin and the position of frequently operating equipment at the height of human ears.

Secondly, defining the main noise sources in the square cabin, including: power stations, air conditioners, ventilation fans and cabin equipment.

Second step, determining noise index and correction coefficient of each noise source

According to the principle of noise superposition, the method is expressed by using the formula (1):

l in formula (1) -total sound pressure level, i.e. noise index requirement;

L_ithe sound pressure level of the noise sources, i.e. the specification requirement of each noise source.

The top-down design principle is adopted, so that the noise index requirement L meets the user requirement, and each noise source is assigned with a noise index L_i. And simultaneously giving a correction coefficient to the different types of noise sources, wherein the correction coefficient is used for distinguishing the weight of the influence of the different types of noise sources on the integral noise of the shelter, and the correction coefficient distributed to the noise source with larger influence on the integral noise of the shelter is larger. The correction coefficient is determined according to the noise magnitude and the influence time of the noise source.

Thirdly, taking noise reduction measures aiming at the transmission path of the noise source

Even if each noise source can meet the requirement of the corresponding noise index, the noise of the concerned point can not meet the index requirement due to the relatively complex environment in the shelter, and corresponding measures are required to be taken on the noise source and the transmission path thereof for noise reduction treatment; adding a baffle plate on the transmission path of the noise so as to change the transmission path of the noise; sound-absorbing or sound-insulating materials are adhered to proper positions in the shelter, so that the noise of the concerned points is further reduced, and the noise of the concerned points meets the use requirement.