机载电子设备雷电防护模块的实现和应用

Implementation and application of lightning protection module for airborne electronic equipment

随着飞行器技术的发展,很多电子设备用于飞机航电系统中,由于雷电能量巨大,产生电磁干扰威胁飞机中电子设备正常工作。雷电防护功能是机载电子设备设计的重要指标。文章提出机载电子设备对外电气接口雷电防护设计方法,包括能量计算机工程实现。防护对象包括数据线接口及离散接口。利用瞬态电压抑制管电气特性防止浪涌脉冲,提出E3M模块为机载设备雷电防护手段设计方法,根据各类信号电压配置E3M模块上TVS管型号参数达到防雷要求。

With the development of aircraft technology,many electronic devices are used in aircraft avionics system.Due to the huge energy of lightning,electromagnetic interference (EMI) is generated,which threatens the normal operation of electronic devices in aircraft.Lightning protection function is an important index of airborne electronic equipment design.This paper presents the design method of lightning protection for external electrical interface of airborne electronic equipment,including the realization of energy computer engineering.The protection objects include data line interface and discrete interface.Using the electrical characteristics of transient voltage suppression tube to prevent surge pulse,the design method of e3m module as lightning protection means for airborne equipment is proposed.According to various signal voltages,the TVS tube model parameters on e3m module are configured to meet the lightning protection requirements.