According to specific requirements of automated distribution system for an aircraft, a high expandability and reliability ARINC429 communication card is designed. The function of logic control and global clock distribution is achieved by FPGA technology. Also, the combination of HI-8582 protocol chips and multi-channel switches constitutes a dynamically configurable multiple transmit/receive channel to simplify the complexity of hardware. Hybrid redundancy and high current protection technology improve reliability of the communication card, and the board driver based on VxWorks is developed. The board can achieve ARING429 bus system-related functions and work stably%针对目前先进飞机自动配电系统的要求,设计了一款扩展性和可靠性好的ARINC429通信板卡.运用FPGA技术完成接口逻辑控制和全局时钟分配(倍频或分频),采用HI-8582协议芯片和多路开关相互配合构成可动态配置的多收/发通道,简化了硬件电路复杂度；使用混合冗余和大电流保护技术提高了通信可靠性,同时开发了基于VxWorks的板卡驱动.在某飞机配电地面系统中的测试结果表明,该板卡能够实现ARINC429总线系统的相关功能,运行稳定、波形良好,有一定的推广意义.
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