一种ARINC825总线通信接口可靠性设计方法研究

随着航空电子技术的进步，民航客机电子系统逐渐向着数字化、复杂化的方向发展，对设备间通信的可靠性有着更高要求。在分析ARINC825总线协议标准后,提出使用STM32F207单片机和商用CAN控制器，设计了一套低成本双链路冗余的ARINC825通信接口，使用“时间触发总线调度”技术对通信接口可靠性进行分析。实验表明，设计的ARINC825协议通信接口方案具有较高的可靠性，能够满足飞机驾驶舱控制通信要求。

Research on Reliability Design Method of ARINC825 Bus Communication Interface

With the development of avionics technology, the avionics system of civil aviation airliner is developing towards digitization and complication, so the reliability of communication between equipments is required to be higher. After analyzing the standard of ARINC825 bus protocol, designing a low-cost dual-link redundancy ARINC825 communication interface with STM32F207 single chip computer and commercial CAN controller. The reliability of the communication interface is analyzed by using time-triggered bus scheduling technology. The experimental results show that the ARINC825 protocol communication interface scheme has high reliability and can satisfy the communication requirements of airplane cockpit control.