针对弹载控制器设计中数字I/O端口出现的ESD(electrostaticdischarge)干扰导致端口失效的现象,分析了ESD干扰现象及其机理,结合常规的ESD防护方法,提出了一种基于磁珠和ESD保护器件的弹载控制器数字1/0端口的ESD保护设计方案,保证系统在ESD干扰下数字1/0端口的稳定可靠的工作。最后通过实际工程应用验证了该方案的有效性。

To eliminate ESD disturbance, a novel design approach investigated to protect the digital I/O port of missile controller. Frstly the phenomenon and principles of ESD. Then, a controller designed to accommodate the ESD disturbance by using of magnetic beadThe digital I/O port of missile controller in all states. Finally, the effectiveness of the proposed method demonstrated by experimentation.