The resistance spot welding plays an important role in automotive industry. The electrical parameters （power supply voltage, welding current, SCR firing angle and current flow angle） of welding process can reflect t...The resistance spot welding plays an important role in automotive industry. The electrical parameters （power supply voltage, welding current, SCR firing angle and current flow angle） of welding process can reflect the quality of joint and the status of welding equipment, many data acquisition devices designed to collect those parameters have been discussed in many papers, but there is such a deficiency that one computer can only link with an acquisition device. At automobile assembly field, there are hundreds of welding machines working at the same time, so the existing device can not be satisfied with manufacturing demand. To solve the problem, the double-MCU data acquisition device based on Ethernet is discussed in this paper, the data acquisition devices can altogether link with a computer using a HUB, the effective value or the instantaneous value of electrical parameters can be transmitted to the computer over UDP/IP. All the data are read through Ethernet port of a computer using a LabView application, which can process, store and present all data to the user. Finally the experiments prove that the designed Ethernet-based data acquisition system is suitable for practical application.展开更多
ZYNQ-Ultrascale+型器件是Xilinx公司推出的MPSoC(Multi-Processor System on Chip)架构器件,上面集成了多核Cortex-A53处理器以及Ultrscale系列的FPGA(Field-Programmable Gate Array)。对如今越来越复杂的网络环境以及越来越庞大的网...ZYNQ-Ultrascale+型器件是Xilinx公司推出的MPSoC(Multi-Processor System on Chip)架构器件,上面集成了多核Cortex-A53处理器以及Ultrscale系列的FPGA(Field-Programmable Gate Array)。对如今越来越复杂的网络环境以及越来越庞大的网络数据吞吐的管理问题进行了研究,采用了ZYNQ-Ultrascale+型器件作为核心处理器,提出了一种万兆以太网流信息统计架构。通过对以太网链路的数据包进行卸载,组合成流信息进行统计分析,将统计结果传输至主机,能够完成对万兆以太网的管理。将所述的架构应用于实际的万兆以太网监控系统中,支持TCP、UDP、ICMP、ARP等协议的统计,统计延时小于5μs,最高可支持3.2k条流数量。展开更多
文摘The resistance spot welding plays an important role in automotive industry. The electrical parameters （power supply voltage, welding current, SCR firing angle and current flow angle） of welding process can reflect the quality of joint and the status of welding equipment, many data acquisition devices designed to collect those parameters have been discussed in many papers, but there is such a deficiency that one computer can only link with an acquisition device. At automobile assembly field, there are hundreds of welding machines working at the same time, so the existing device can not be satisfied with manufacturing demand. To solve the problem, the double-MCU data acquisition device based on Ethernet is discussed in this paper, the data acquisition devices can altogether link with a computer using a HUB, the effective value or the instantaneous value of electrical parameters can be transmitted to the computer over UDP/IP. All the data are read through Ethernet port of a computer using a LabView application, which can process, store and present all data to the user. Finally the experiments prove that the designed Ethernet-based data acquisition system is suitable for practical application.
文摘ZYNQ-Ultrascale+型器件是Xilinx公司推出的MPSoC(Multi-Processor System on Chip)架构器件,上面集成了多核Cortex-A53处理器以及Ultrscale系列的FPGA(Field-Programmable Gate Array)。对如今越来越复杂的网络环境以及越来越庞大的网络数据吞吐的管理问题进行了研究,采用了ZYNQ-Ultrascale+型器件作为核心处理器,提出了一种万兆以太网流信息统计架构。通过对以太网链路的数据包进行卸载,组合成流信息进行统计分析,将统计结果传输至主机,能够完成对万兆以太网的管理。将所述的架构应用于实际的万兆以太网监控系统中,支持TCP、UDP、ICMP、ARP等协议的统计,统计延时小于5μs,最高可支持3.2k条流数量。
