Rectification scheme of electromagnetic compatibility radiation emission for mine-used personnel location system
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摘要: 按照欧洲标准EN 301 489-1中的电磁兼容性要求，矿用人员定位系统在国外应用必须通过辐射发射测试。针对该要求，对矿用人员定位系统进行了辐射发射测试，分析了辐射噪声的形成原因，并提出了整改方案：对于时钟信号引起的辐射发射超标，在PCB布线时缩短时钟信号走线长度，减少过孔，加大走线宽度和线间距，同时两边铺设接地线进行屏蔽，减小时钟线的回流面积；针对不同时钟电路，采取低通滤波、共模抑制等措施降低辐射信号发射。测试结果表明，整改后的人员定位系统最大峰值频点功率比EN 55032标准CLASS A要求值低13.086 dB，比CLASS B要求值低3.086 dB，满足出口要求。Abstract: According to requirement of electromagnetic compatibility in European Norm EN 301 489-1, mine-used personnel location system must pass radiation emission test when it is applied in foreign countries. For the requirement, radiation emission test for mine-used personnel location system was carried out, and causes of radiation noise was analyzed. The following rectification scheme was put forward: for the radiation emission caused by the clock signal, shorten the length of clock signal line during PCB routing, reduce the number of vias, increase the alignment width and line spacing, and laying ground wire on both sides to shield, so as to reduce return area of clock line; for different clock circuits, low-pass filter, common mode suppression and other measures were adopted to reduce radiation signal transmission. Tests results show that the maximum peak frequency power of the personnel location system after the rectification is 13.086 dB lower than requirement of EN 55032 standard CLASS A and 3.086 dB lower than the requirement of EN 55032 standard CLASS B, which can meet the export requirements.
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期刊类型引用(1)
1. 王展. 矿用红外温度传感器抗电磁干扰设计. 煤矿机电. 2023(06): 15-19 . 
百度学术
其他类型引用(1)
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