无线传感单元PCB的电磁骚扰研究

摘要

In this paper, the electromagnetic disturbance theory is introduced, on the basis of which the PCB of wireless temperature sensor unit models with shielded shell and the electromagnetic disturbance occurring at its pin are simulated to work out the distribution of their electromagnetic field strength and surface current. The paper, therefore, proposes the measures to suppress electromagnetic strength, which provide theoretical reference for the e-lectromagnetic compatibility research for wireless sensor unit in the substation electromagnetic environment.%依据电磁骚扰相关理论,对带屏蔽外壳的无线温度传感单元的PCB及其引脚处的电磁骚扰进行了仿真研究,得到了带屏蔽外壳模型的PCB及其引脚处的磁场强度和表面电流的分布情况,并提出了抑制电磁骚扰的措施,为无线传感单元在变电站电磁环境下的电磁兼容性研究提供了理论参考依据.