高性能导航计算机的ARINC 429总线通讯研究与实现

针对现代导航系统的需要,设计并实现了一种基于TMS320C6713和SC28L198的新型高性能导航计算机,该系统集成了高精度AD采集、8路异步串口通讯以及ARINC 429通讯等多源数据采集通讯功能;重点阐述了ARINC429总线通讯模块的实现方法,详尽分析了中断响应的时序处理,通过对中断信号的判断与处理,利用CPLD实现了429模块4收2发的全双工通讯;该导航系统经过检验,可完整实时的收发数据,减轻了DSP的通讯负担,提高了系统的运行效率;该系统已经在某型无人机半物理仿真导航系统中得到成功应用.

Implementation and Research of ARINC429 Data Bus Communication in a High Performance Navigation Computer

A kind of implementation of high performance navigation computer based on TMS820 C6713 and SC28L198 is introduced in the thesis. The system integrated the functions of high accuracy AD data acquisition, 8 channels asynchronous serial data transmission and ARINC429 data bus communication. The author gives an implementation of the ARINC429 data bus communication module, and particularly analyses the interrupt response timing. Through the research of the interrupt signal responding, the author realizes a ARINC 429 data bus communication module with 4 receiving and 2 transmitting channels. Now, this computer has been checked up that can send and receive data fully and truly, and it is used successfully in one type of pilotless aircraft hardware-in-the-loop simulation system.