自《中国制造2025》被提出来,为达到产业互联一体化的目标,在生产实际中需要一个能实现工厂管理的信息交互平台。工业控制设备通常采用现场总线,如控制器局域网络(Controller Area Network,CAN)总线或485总线等,均采用短帧通信方式,不...自《中国制造2025》被提出来,为达到产业互联一体化的目标,在生产实际中需要一个能实现工厂管理的信息交互平台。工业控制设备通常采用现场总线,如控制器局域网络(Controller Area Network,CAN)总线或485总线等,均采用短帧通信方式,不满足组网需求,希望采用长帧或易组网的通信协议。本课题以此为背景,依托强大的嵌入式技术,开发出一个信息采集及转发的工业物联网关,采用CAN总线作为工厂现场控制总线,以太网作为管理层网络,在此设计基础上可扩展达到工业4.0所提倡的信息互联和高效管理,实现信息服务一体化。展开更多
A scheme of transmission control protocol/Internet protocol（TCP/IP） network system based on system-on-programmable chip（SOPC） is proposed for the embedded network communication. In this system, Nios processor, Eth...A scheme of transmission control protocol/Internet protocol（TCP/IP） network system based on system-on-programmable chip（SOPC） is proposed for the embedded network communication. In this system, Nios processor, Ethernet controller and other peripheral logic circuits are all integrated on a Stratix Ⅱ field programmable gate array （FPGA） chip by using SOPC builder design software. And the network communication is realized by transplanting MicroC/OS Ⅱ （uC/OS Ⅱ ） operation system and light weight Internet protocol（LwIP）. The design idea, key points and the structures of both software and hardware of the system are presented and ran with a telecommunication example. The experiment shows that the embedded TCP/IP network system has high reliability and real-time performance.展开更多
With the development of Ethernet systems and the growing capacity of modem silicon technology, embedded communication networks are playing an increasingly important role in embedded and safety critical systems. Hardwa...With the development of Ethernet systems and the growing capacity of modem silicon technology, embedded communication networks are playing an increasingly important role in embedded and safety critical systems. Hardware/software co-design is a methodology for solving design problems in processor based embedded systems. In this work, we implemented a new 1-cycle pipeline microprocessor and a fast Ethemet transceiver and established a low cost, high performance embedded network controller, and designed a TCP/IP stack to access the Intemet. We discussed the hardware/software architecture in the forepart, and then the whole system-on-a-chip on Altera Stratix EP1S25F780C6 device. Using the FPGA environment and SmartBit tester, we tested the system＇s throughput. Our simulation results showed that the maximum throughput of Ethemet packets is up to 7 Mbps, that of UDP packets is up to 5.8 Mbps, and that of TCP packets is up to 3.4 Mbps, which showed that this embedded system can easily transmit basic voice and video signals through Ethemet, and that using only one chip can realize that many electronic devices access to the Intemet directly and get high performance.展开更多
文摘自《中国制造2025》被提出来,为达到产业互联一体化的目标,在生产实际中需要一个能实现工厂管理的信息交互平台。工业控制设备通常采用现场总线,如控制器局域网络(Controller Area Network,CAN)总线或485总线等,均采用短帧通信方式,不满足组网需求,希望采用长帧或易组网的通信协议。本课题以此为背景,依托强大的嵌入式技术,开发出一个信息采集及转发的工业物联网关,采用CAN总线作为工厂现场控制总线,以太网作为管理层网络,在此设计基础上可扩展达到工业4.0所提倡的信息互联和高效管理,实现信息服务一体化。
基金Applied Programof Basic Research of Tianjin(08JCYBJC14700)
文摘A scheme of transmission control protocol/Internet protocol（TCP/IP） network system based on system-on-programmable chip（SOPC） is proposed for the embedded network communication. In this system, Nios processor, Ethernet controller and other peripheral logic circuits are all integrated on a Stratix Ⅱ field programmable gate array （FPGA） chip by using SOPC builder design software. And the network communication is realized by transplanting MicroC/OS Ⅱ （uC/OS Ⅱ ） operation system and light weight Internet protocol（LwIP）. The design idea, key points and the structures of both software and hardware of the system are presented and ran with a telecommunication example. The experiment shows that the embedded TCP/IP network system has high reliability and real-time performance.
文摘With the development of Ethernet systems and the growing capacity of modem silicon technology, embedded communication networks are playing an increasingly important role in embedded and safety critical systems. Hardware/software co-design is a methodology for solving design problems in processor based embedded systems. In this work, we implemented a new 1-cycle pipeline microprocessor and a fast Ethemet transceiver and established a low cost, high performance embedded network controller, and designed a TCP/IP stack to access the Intemet. We discussed the hardware/software architecture in the forepart, and then the whole system-on-a-chip on Altera Stratix EP1S25F780C6 device. Using the FPGA environment and SmartBit tester, we tested the system＇s throughput. Our simulation results showed that the maximum throughput of Ethemet packets is up to 7 Mbps, that of UDP packets is up to 5.8 Mbps, and that of TCP packets is up to 3.4 Mbps, which showed that this embedded system can easily transmit basic voice and video signals through Ethemet, and that using only one chip can realize that many electronic devices access to the Intemet directly and get high performance.
