什么是EMI测试?EMI和EMS以及EMC电磁兼容是什么关系呢?

2021-07-15 13:50:26

随着科技的发展,人们对电磁辐射题目越来越关注了。信赖不管是模块电源厂家照旧电子工程师都对EMC这个名词很了解北京网站建设,由于模块电源和电子产品要过认证,需通过专业的机构做EMC测试。与之相似的名词还有EMI和EMS,它们都跟干扰有关系,那么,三者之间有什么不同吗?

定义区别:

EMI全称Electromagnetic Interference,即电磁干扰,指电子设备在自身工作过程中产生的电磁波,对外发射并对设备其它部分或外部其它设备造成干扰。

EMS全称Electromagnetic Susceptibility,即电磁敏感度,指电子设备受电磁干扰的敏感程度。

EMC全称Electromagnetic Compatibility,即电磁兼容,要求模块电源等电子设备内部没有紧张的干扰源及设备或电源体系有较好的抗干扰能力。

它们的关系是有了EMI而有EMC,知道EMS要求才能实现EMC测试是包含EMI和EMS的。

EMI、EMS和EMC的区别含义:

EMI电磁干扰是合成词,应分别考虑电磁和干扰,干扰是指设备受到干扰后性能降低以及对设备产生干扰的干扰源这俩层意思。第一层意思如雷电使收音机产生杂音、拿起电话后听到无线电声音等。

EMI标准和EMI检测是EMI的哪部分?这是第二层含义,即干扰源,也包括受到干扰之前的电磁能量。电荷假如静止,称为静电(ESD)。当不同的电位向同等移动时,便发生了静电放电,产生电流,电流四周产生磁场。假如电流的方向和大小持续赓续转变就产生了电磁波。电以各种状况存在,我们把这些所有状况统称为电磁。EMI标准和EMI检测是确定所处理的电的状况,决定如何检测与评价。

EMS电磁敏感度是指因为电磁能量造成性能降落的容易程度。假如将电子设备比喻为人,将电磁能量比做感冒病毒,敏感度就是是否易患感冒。假如不易患感冒,说明其免疫力强,也,即抗电磁干扰性强。

EMC电磁兼容性指设备所产生的电磁能量既舛错其它设备产生干扰也不受其它设备的电磁能量干扰的能力。EMC这个术语有其特别很是广的含义,电磁能量的检测、抗电磁干扰性试验、检测效果的统计处理、电磁能量辐射克制技术、雷电和地磁等天然电磁征象、电场磁场对人体的影响、电场强度的国际标准、电磁能量的传输途径、相干标准及限定等均包含在EMC之内。

EMC标准按区域重要分为国际标准(IEC)、欧盟标准(EN)、中国标准(GB/T)等。通用类的EMC标准重要分为居住、轻工业、工业环境等。

随着电气电子技术的发展,电磁环境日渐复杂,产品的电磁兼容性受到企业的正视。今后我司将会继承进步模块电源产品的EMC性能,紧随新技术、新材料、新趋势,为用户提供专业化的产品和服务。

Electromagnetic Interference Testing

Compliance with the United States, Canadian and European Electromagnetic Interference (EMI) rules and regulations is a legal requirement. Except for a very few exempt type of equipment, these regulations apply to any electronic equipment that utilizes or generates timing signals or pluses at a rate in excess of 9 kHz or any equipment designed to intentionally generate and emit RF energy by radiation or induction. EMC Testing is uniquely qualified to ensure that your product can meet these regulatory requirements.

Our engineers, state-of-the-art equipment and field test site assures the manufacturer of accurate product testing to comply with governmental EMI obligations. Our new 3 & 10 meter FCC registered open field test site was designed with the future in mind. It utilizes solid sheet steel ground plane design to provide low deviation field attenuation values in comparison with the theoretically perfect test site. EMC’s investment in solid construction of the test site and equipment means we are prepared for any potential changes in regulatory requirements. It also means the quality of our tests are second to none. Assistance in filing the necessary forms and documentation with the FCC can also be provided.

If necessary, EMC Testing can partner with Innovative Circuits of Corinth, MS to offer possible solutions and effective methods to bring your products into compliance with the legal limits of EMI. Our engineers have years of hands on experience troubleshooting emission failures and many times can fix it on the spot. EMC Testing will do all the work necessary to meet and exceed your expectations! Contact us today.