基于FPGA+DSP的数据采集系统设计与实现

摘要:

文章阐述了一种基于FPGA+DSP构架的数据采集系统的设计与实现。该系统中FPGA先进行模拟量、频率量、离散量输入的采集，以及RS-422、ARINC429总线的数据接收工作，然后将采集和接收到的数据按约定数据格式，通过HPI发送至DSP，DSP按协议要求完成数据的运算、组合等处理后，FPGA控制HPI读取处理结果并控制离散量输出模块、RS422、ARINC429总线按照所需的数据格式和通讯周期将数据输出至相对应的系统。该系统具有丰富的接口，能满足多种类、不同时序周期的总线通讯。

Abstract:

The article expounds a design and implementation of a kind of data acquisition system based on the FPGA + DSP architecture. The FPGA collects the analog data, the frequency data, the discrete input data, RS-422 buses data and ARINC429 buses data, then, these data will be sent to the DSP through the HPI. According to the agreement, the DSP finishes the data calculation and combination. The FPGA reads the processing results through the HPI, then the results will be sent to the corresponding systems by discrete output module, RS-422 buses and ARINC429 buses.