基于C8051单片机的ARINC429总线数据处理设计

Design on Data Processing for ARINC429 Data Bus Based on C8051 Singlechip

ARINC429数据总线在航空设备中得到广泛应用,通常用来传输惯导信息。基于C8051F043单片机、可编程逻辑器件CPLD和ARINC429接口芯片设计出一套电路。单片机对不同指定地址的读写操作通过CPLD配合输出一系列的复合逻辑信号,可实现对ARINC429接口芯片的灵活配置,对ARINC429总线数据的动态操作,以及ARINC429总线数据和异步串行数据的相互转换。结果表明,该电路可实现ARINC429总线数据的稳定传输和转换。与其他ARINC429接口电路相比,具有实现简单和易于集成的优点,拥有广阔的应用前景。

ARINC429 data bus is widely applied in avionics facility, usually for inertial navigation information transnfission. A circuit is designed based on C8051F043 singlechip, CPLD and ARINC429 interface chip. With the cooperation of CPLD, a set of composited logic signals are generated when the singlechip read or write some appointed addresses, which can be used to configure the ARINC429 interface circuit flexibly, operate the ARINC data bus dynamically and convert the ARINC429 bus data to and from the UART data. The experiment results show that the ARINC429 data transmission and conversion are both stable. Compared with the other ARINC429 interface circuit, the given scheme is agile to realize and easy to be integrated. The circuit can be widely used for ARINC429.