汽车电子的电磁兼容检测技术探讨.docx

汽车电子的电磁兼容检测技术探讨 Discussion of EMC Test Technology for Automotive Electronics 涂辛雅 王益平 章瀚臣 杭州远方仪器有限公司 EMC电子测量研究所 Cinya Tu Yiping Wang Hanchen Zhang EVERFINE INSTRUMENT CO.,LTD Institute of EMCElectronic Measurement 摘要—随着汽车电子技术的飞速发展，汽车自动化、智能化程度日益提高，各种电子设备广泛应 用于汽车动力控制系统、安全控制系统、车身电子系统、娱乐通讯系统中，对汽车行驶的安全性、可靠性、舒适性、节能减排性起着至关重要的作用。由于汽车电气设备数量、种类的不断增加， 工作频率的不断提高，汽车内电磁环境日益复杂，由此带来了新的电磁兼容（EMC）问题。本文结 合汽车电子电磁兼容（EMC）检测的必威体育精装版发展趋势及相关的国际标准，系统地介绍了汽车电子的 EMC 测试标准及测试项目，并重点阐述了传导发射、辐射发射、大电流注入、瞬态抗扰度测试技术。 Abstract : With the rapid development of automotive electronics technology, also the increasing improvement of automobile automation and intelligent, kinds of electronic equipment are widely used in power control system, security control system, automobile body electronic system, as well as entertainment and communication system of automobile which play an important role in the safety, reliability, comfort, energy conservation and emission reduction of automobile driving. Due to the increasing of the quantity and type of electronic equipment for automobile, and the continuous improvement of the working frequency, the electromagnetic environment inside automobile is increasingly complicated, thus it also brings new problems of electromagnetic compatibility (EMC). Based on the latest developing trend of automotive electronics EMC test and relevant international standards, this paper introduces the EMC test standards and test items of automotive electronics, and mainly expounds on the conducted emission, radiation emission, BCI and transient immunity test techniques. 关键字：汽车电子，电磁兼容(EMC)，电磁骚扰(EMI)，电磁抗扰度（EMS） Key words: automotive electronics, Electromagnetic Compatibility (EMC), Electromagnetic Interference (EMI), Electromagnetic Susceptibility (EMS) 引言 人们对汽车安全性、舒适度、环保性能要求的不断提升极大地促进了汽车电子技术的飞速发展，如今汽车产业60%～70%的技术创新都是由汽车电子技术推动的。越来越多的传统机械系统被电子系统所取代，汽车电子在新能源汽车中的价值占比高达 47%。汽车电子被广泛应用的同时， 我们应该密切关注到汽车上的电子设备和器件，特别是半导体逻辑器件对电磁干扰十分敏感，经常会发生汽车内部电子设备相互干扰的情况。当电磁干扰发生时，轻则导致电子设备功能劣化， 重则导致功能失效，严重威胁汽车安全行驶。因此，电磁兼容性能成为考量汽车