全球标准分享下载-全场2元
客服微信:1093451816,欢迎大家分享、下载!

ISO解决巨大噪音问题

住在喧嚣街道附近的人都会认同交通噪音是一个严重的麻烦。据世界卫生组织(WHO)的数据显示,交通噪音也会影响我们的健康,导致过早死亡。

在欧洲地区的西方国家,交通噪声污染每年导致超过一百万人丧失健康,使得他们处于亚健康、残疾或早夭的境况。WHO针对这一主题作了报告。但这一问题不仅限于欧洲,因为任何一个有交通区域和车辆使用率较高的国家,都会受此影响。

这个问题的最大诱因之一是轮胎碰到路面时发出的声音。当车速大于等于50km/h时,会产生最糟糕的轮胎/公路相互作用。对于轻型车辆来说,车速达30km/h时,这种状况便会发生。而对于其他安静的电动汽车来说,每一个速度范围内都可能发生。

联合国欧洲经济委员会已经发布了法律文件来控制轮胎噪音。这些文件在大多数的工业化国家都已经实施。然而,路面也是一个重要的变量,它和轮胎、车辆一样影响着交通噪音。

一些国家已经开始在易受高噪音影响的地区修改路面,但仍有很长的路要走。目前协商正在进行,以合法地限制路面产生的噪音,这一举措也得到了汽车和轮胎制造商的支持。

但为了将这些要求付诸实践,我们需要国际标准来统一且可靠地测量和监测道路路面对交通噪音的影响。ISO 1997年发布了第一个标准,但随着技术的进步和需求的变化,ISO在ISO 11819 – 2中颁布了一个新的方法,声学——路面对交通噪声影响的测量——第2部分:近场测量的方法。

乌尔夫.桑德伯格(Ulf Sandberg)是这项新标准的项目负责人,他说“新的研究方法更实用,更容易操作,特别是对于长距离的路面来说。”

这种新方法导致了ISO / TS 11819 – 3关于参考轮胎技术规范的制定。桑德伯格(Ulf Sandberg)解释道:“意识到我们还需要正确识别轮胎来提供可靠的、可再生的数据时,我们正在制定新的ISO 11819 – 2, 并且起草了ISO / TS 11819 – 3。”

然而,制定这些标准的ISO委员会更进一步。最近的研究表明,温度影响轮胎和路面噪声的排放。制定一个新的文件—-ISO / TS 13471 – 1,以说明这是在测量轮胎/道路噪音的时候也同样考虑温度的影响。

“控制道路噪音的需求受到越来越多的关注。例如,欧盟委员会现在要求其成员国定期报告主要道路上的交通噪音排放;如果发现这些交通噪音过大,还要求成员国制定减排计划。”桑德伯格(Ulf Sandberg)说,“这三个新文件为弄清楚路面对噪音污染的影响提供了有效的帮助。”

 

ISO tackles loud traffic noise

Anyone living near a busy road will agree that traffic noise is a serious nuisance. According to the World Health Organization (WHO), it can also affect our health and lead to premature death.

Traffic-related noise pollution accounts for over one million healthy years of life lost annually to ill health, disability or early death in the western countries of the European Region, states a WHO report on the subject. But this problem is not limited to Europe as it affects any country with traffic areas and high vehicle usage.   

One of the biggest contributors to this issue is the sound created when a tyre touches the pavement. The worst type of tyre/road interaction occurs at speeds of, or above, 50 km/h. For light vehicles, it starts at speeds as slow as 30 km/h while, for the otherwise quiet electric vehicles, it happens at every speed range.

The United Nations Economic Commission for Europe has issued legal limits to control tyre noise and these are in place in most industrialized countries. However, road surfaces are also an important variable, influencing traffic noise as much as tyres and vehicles do.

A few countries have started to modify road surfaces in areas vulnerable to high noise, but there is still a long way to go. Negotiations are currently underway to legally limit how much noise a road surface should generate, a move that is also backed by vehicle and tyre manufacturers. 

But in order to put these requirements into practice, we need International Standards to uniformly and reliably measure and monitor the influence of road surfaces on traffic noise. ISO published a first standard in 1997, but advances in technology and changing needs have led to the development of a new methodology in ISO 11819-2, Acoustics – Measurement of the influence of road surfaces on traffic noise – Part 2: The close-proximity method.

Ulf Sandberg, Project Leader for the new standard, says that “the new methodology is much more practical and easier to use, especially for long stretches of road”.

This new method led to the development of technical specification ISO/TS 11819-3 on reference tyres. Sandberg explains: “We were developing the new ISO 11819-2 when we realized that we also needed to identify tyres correctly to give reliable and reproducible data, so we created ISO/TS 11819-3.”

However, the ISO committee developing these standards went even further. Recent research has shown that temperature influences noise emission as much as tyres and road surface. A new document, ISO/TS 13471-1, was developed to account for the influence of temperature when measuring tyre/road noise.

“The need to control road noise is getting more and more attention. The European Commission, for example, now requires that member states regularly report traffic noise emission along major roads and that they develop abatement programmes if these are found to be excessive,” says Sandberg. “The three new documents offer a solid toolbox for identifying the contribution of road surfaces to noise pollution.”

 

赞(0)
未经允许不得转载:标准2025 » ISO解决巨大噪音问题
分享到: 更多 (0)

最全最新的标准分享平台

客服微信:1093451816返回首页