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声功率试验

 
LMS声功率解决方案保障了日益增长的试验与质量控制所需的试验效率。除了精确的试验方法,LMS通过如空气声定量分析与声源定位这样的先进工具与相关服务,来帮助实现目标声功率级。
 

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声功率是由结构或设备产生并辐射出的声能量。这种试验把声源从环境中辨认并量化出来,用于ISO标准认证。除了根据地区法规满足当地市场标准,准确的声功率试验对产品出口销售与品牌战略上有很大的影响。在许多行业中,不超过规定的声功率级是关键指标,而且较低的声功率通常代表着竞争优势。

LMS声功率解决方案保障了日益增长的试验与质量控制所需的试验效率。除了精确的试验方法,LMS通过如空气声定量分析与声源定位这样的先进工具与相关服务,来帮助实现目标声功率级。

声功率试验常用在许多行业中,如家用电器、办公设备、手持式电动工具或工程机械产业。

下面是在声功率试验中所应用的技术:
  • 基于ISO 3741、ISO 3744、ISO 3745、ISO 3746的声压方法
  • 通常用于现场测试、符合ISO 9614系列标准的声强方法
  • 基于麦克风阵列的非标方法,比如全息技术

试验流程取决于使用的技术,每个行业都在其行业标准中定义了特殊要求。 

欧洲噪声排放指引(2000/14/EC)应用于各种户外设备和工程机械产业,要求他们标注设备(噪声标记)或者遵守最高值(噪音限制)。在汽车行业中,发动机和动力总成的试验台架用来在变速工况下测试声功率。在电脑与办公设备行业,根据ISO 7779和ECMA标准的要求,必须测试声功率。在家电行业,IEC 60704为声功率设立了标准。对于HVAC设备行业,需根据ARI 270(空调与制冷协会)ARI575的要求,对声功率级评级。

LMS软件包包括了许多商业化解决方案,满足大多数快速且高效试验的标准要求。LMS Test.Lab平台进一步提供了声功率测试的灵活性以满足特定行业的需求。




特点

  • 满足各行业和客户特殊需求的标准化、客户化的解决方案
  • 关注各行业标准,提高测试效率
  • 集成的MS OFFICE报告


优点

  • 精确,高效的声压级测试
  • 根据具体行业需求,支持众多ISO标准和地方标准
  • 从单一平台的声功率级测量到先进的声工程任务



    Covering a range of industries, LMS application cases let you discover how LMS solutions help our customers solve their real-life engineering challenges. 

    LMS helps BSH Bosch und Siemens Hausgeräte GmbH dish up superior dishwashers

    Siemens.JPGHuge robotic arms move in precise synchronicity as they place the shiny metal sheets into the molds from which they will emerge as stainless steel dishwasher tubs, ready to move to the next station in the impressive BSH assembly line. Located in Dillingen, Germany, it is the biggest dishwasher plant in the world –approx. 2 million dishwashers are produced here annually.





    UTAC accelerates noise and vibration testing with LMS Test.Lab   

    industrial_analysis_laboratory_UTAC2.jpgUTAC, a leading company in testing and certification services, deployed LMS Test.Lab in its environmental laboratory for acoustic testing, citing its testing speed, engineering capabilities, precision, and ease of use as key differentiators. UTAC estimates that testing campaigns run with LMS Test.Lab deliver a 30% time gain compared to tests with other tools. Thanks to LMS Test.Lab, UTAC can offer its customers a precise diagnosis of acoustic problems.



    Sound power testing for ISO certification

    Sound power testing for ISO certification acoustic metric 1Sound power is an acoustic metric that represents the total noise or acoustic power generated by a specific machine or tool. It corresponds to an intrinsic acoustic property of the equipment itself and is not influenced by the environment the equipment is operating in. Sound power values can be used to compare different machines and products in an absolute way, to do competitive benchmarking or to validate the impact of design modifications on a product’s acoustic profile.




    Brochures
    下载 LMS Test.Lab Acoustics 声学试验手册
    Download the paper on Acoustic measurements

    Images

    Sound Power Testing LR 02.jpg Sound power- real time sound power result 160x120.jpg Sound Power Testing LR 04.jpg
    洗衣机的测试需要很长的时间。LMS Test.Lab支持在任何时间间隔下在线计算声功率级。 该软件的灵活性允许实时处理、实时显示声功率和其他数据。 许多户外设备制造商必需遵守EC/2000/14标准,LMS为量化测试和研发分析提供解决方案。




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