|本期目录/Table of Contents|

[1]杨 晓.车载音频设备电磁干扰故障分析与排除[J].电子设计工程,2019,27(22):179-183.
 YANG Xiao.Analysis and elimination of electromagnetic interference of vehicle?mounted audio equipment[J].SAMSON,2019,27(22):179-183.
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车载音频设备电磁干扰故障分析与排除(PDF)
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《电子设计工程》[ISSN:1674-6236/CN:61-1477/TN]

卷:
27
期数:
2019年22期
页码:
179-183
栏目:
电力电子技术
出版日期:
2019-11-20

文章信息/Info

Title:
Analysis and elimination of electromagnetic interference of vehicle?mounted audio equipment
文章编号:
1674-6236(2019)22-0179-05
作者:
杨 晓
(中国西南电子技术研究所 四川 成都 610036)
Author(s):
YANG Xiao
(Southwest China Institute of Electronic Technology,Chengdu 610036,China)
关键词:
地面系统话音无线通信音频设备耦合路径电源隔离单元
Keywords:
ground system voice wireless communication vehicle-mounted audio equipment coupling path power isolation unit
分类号:
TN03
DOI:
-
文献标志码:
A
摘要:
针对某大型地面系统话音无线通信试验中,某型车出现了噪声大、刺耳啸叫的问题,通过搭建独立的音频收发系统、逐一关闭同一平台的其他设备、串件等手段排查,定位干扰源为该车乘员盒,干扰路径为该车电台电源线。经权衡,选取电源隔离单元切断干扰耦合路径的方式,将较难处理的低音频干扰转化成较容易处理的高DC/DC开关频率干扰,并通过模拟试验,验证了此方法对低音频干扰信号具有较高的幅度的隔离作用,从而提高电台通信的话音清晰度,使此车载音频系统话音无线通信质量达到要求。
Abstract:
In the voice wireless communication test of a large-scale ground system, the noise and screaming of the audio equipment of a certain type of vehicle appeared. By building an independent audio transceiver system, closing the other equipment of the same platform one by one, and series of other means, the interference source was located as the occupant box of the vehicle, and the interference path was the power line of the vehicle radio.After weighing, the power isolation unit is selected to cut off the interference coupling path, and the low frequency interference which is difficult to deal with is transformed into the high DC/DC switching frequency interference which is easy to deal with. The simulation test proves that this method has a high isolation effect on the low frequency interference signal, thus improving the voice clarity of radio communication and making the vehicle audio system voice wireless communication quality meeting requirements.

参考文献/References:

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相似文献/References:

[1]代田慧,彭晓宏.应用于音频设备的14-bit Sigma-delta调制器的设计[J].电子设计工程,2016,(22):43.
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备注/Memo

备注/Memo:
收稿日期:2019-04-10 稿件编号:201904065作者简介:杨 晓(1982—),男,四川仁寿人,工程师。研究方向:电磁兼容整改及测试。
更新日期/Last Update: 2019-11-25