Application Research On SOPC Technology For Road Traffic Information Acquisition

Aiming at the transmission of mass data and switching in of multipath and different type sensor in urban road traffic conditions obtaining technic,a new sensor network structure is proposed base on reconfigurable traffic information acquisition and soft sensing model research project.In this paper,the zigbee is used as lower layer network and the Ethernet is regarded as upper layer network,the FPGA is used to construct SOPC system to realize the information collection and processing.For satisfying the functional requirement of the compound node,this thesis worked on the development by the use of SOPC technology.First,finish the design and debug of SOPC hardware system,include the design and selection of processor,Flash, SDRAM and UART soft core.Second,the selection of RTOS,the realization ofμC/OS kernel,the design of compound node tasks.Third,the development of function module,include the Ethernet module,UART communication module,real-time clock module and I~2C bus module.Verified the Ethernet communication module,UART communication module and real-time clock module of the compound node prototype by sufficient experiments. Recurring the acquisition of sensor data and Zigbee communication by my fellow, realized the whole process of acquisition,processing and transmission,formed a completed prototype system,layed the first stone for further development.