基于VxWorks的高速数据采集系统设计与实现

Design and implementation of high-speed analog data acquisition system based on VxWorks

目前在分时操作系统下,数据采集系统的实时性和稳定性都有待提高,为了解决这些问题,设计了基于Vxworks的高速数据采集系统。采用FPGA协调PCI控制芯片和AD转换芯片的工作,在FPGA内部开辟专用RAM,保证数据的实时更新。同时,还开发了Vxworks系统下的驱动程序。实验结果表明,该方案具有优良的性能,满足军用及航空航天领域的应用需求。

At present, the normal data acquisition system based on time-sharing operating system has many disadvantages, such as real-time character and stability cannot meet the requirements. To resolve these matters, a high-speed analog data acquisition system based on VxWorks was introduced. In the system, FPGA was used for managing the PCI chip and AD chip. Simultaneously, in order to make sure the acquired data is always the latest, the inner RAM of the FPGA stores and u the data. The in military and result shows that, this system has outstanding performance and satisfies the demand aviation.