新一代ARINC429总线监听模块设计技术

New Design Technology of ARINC429 Data Bus Monitoring

在飞行试验中,机载ARINC429总线往往包含重要的试飞数据,采集ARINC429总线是试飞测试系统中重要的一环;以往的ARINC429总线采集技术,一般采用分离元器件构成,造成电路体积大、功耗大,可靠性降低;在新一代网络化采集器创新性预研背景下,提出了一种基于DSP和FPGA架构的通用设计方案,FPGA进行总线协议解析,DSP进行数据的筛选,充分发挥出FPGA的并行优势和DSP的灵活特性;同时,设计了数据采样和传递机制,并在实际工程中得到应用。

In flight test, the key flight test data contained in airborne ARINC429 data bus, it is very important part that acquiring ARINC429 data in flight test system. The previous technology of acquiring ARINC429 data , it consist of various components so that circuit volume , large power consumption and low reliability. In the background of new generation networking acquiring equipment, the new design way of DSP and FPGA put out, bus protocol Parsing by FPGA, data searching by DSP. This way makes good use of FPGA parallel compu- ting and DSP neat features. Meanwhile, data sampling and delivering designed , and also applied in practical flight test engineering.