基于FPGA的交通信息采集系统的设计与应用

DESIGN AND APPLICATION OF TRAFFIC INFORMATION COLLECTION SYSTEM BASED ON FPGA

针对传统基于MCU(Micro Controller Unit)的信息采集系统性能和功耗上的弊端,提出了一种基于现场可编程门阵列(FPGA)的交通信息采集系统的SOPC(System On a Programmable Chip)设计方案。该系统在硬件设计上内嵌了Nios Ⅱ软核处理器,在软件设计中引入了MicroC/OS-Ⅱ实时操作系统,它作为新一代交通信号智能控制机的数据采集前端,实时高效且健壮稳定,已在北京市试点运行取得成功。

To resolve the disadvantages of traditional information collection system based on MCU in performance and power consumption,a design scheme for traffic information collection system based on FPGA is proposed in the way of SOPC.The system embeds Nios Ⅱ soft-core processor in its hardware design and introduces MicroC/OS-Ⅱ real-time operating system in its software design.As a data acquisition front-end of the new generation traffic signal intelligent control machine,it is real-time,efficient,robust and stable,and has succeeded in the pilot run in Beijing.