A method of Avionics System for Fixed Wing UAV

According to the reliability requirement for Unmanned Aerial Vehicle (UAV), heterogeneous dual redundancy design is adopted to improve the reliability of avionics system. For UAV avionics system, serial port and low-speed bus interface are mostly used to realize interconnection, point-to-point connection between equipment, poor resource sharing, and poor reconfigurability and scalability of avionics system. An open avionics system architecture with multi bus structure is proposed, which solves the poor scalability of the typical RS422 star interconnection structure, improves the scalability of the system and meets the strong real-time requirements of avionics system.