中低速磁浮列车间隙传感器的电磁兼容设计
The EMC Design of the Gap Sensor beneath Middle/Low-velocity
Maglev Train
摘要 分析了传感器可能受到的电磁干扰类型,在结构和电路上,分别针对抑制静电、脉冲群和浪涌干扰的不同特点,提出了涂敷导电酯或加入导电弹性衬垫、安装铁氧体磁环、并联X电容、采用瞬变干扰吸收器件进行钳位吸收等措施。测试结果表明:各种干扰基本被控制,符合设计要求。
关键词 中低速磁浮列车;电涡流传感器;电磁兼容
Abstract Electromagnetic interference which the sensor may suffer is analyzed.
According to the characteristics of ESD, EFT and surge signals, measures such as
coating conductive ester or installing elastic gasket into the aperture,appending ferrite
bead, paralleling X-capacitance and applying transient voltage suppressor, are
proposed.The results of the tests indicates that the interference could be suppressed
basically, which can meet the design requirements.
Keywords middle/low-velocity maglev train; eddy-current sensor; electromagnetic
compatibility
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