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Design of multichannel data acquisition system based on Ethernet

机译:基于以太网的多通道数据采集系统设计

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In order to multi-channel image data can be collected at the same time, Data package, Sent to the host computer, a multi-channel data acquisition scheme based on Ethernet transmission is proposed. Using synchronous RS422 bus + FPGA + Gigabit Ethernet hardware platform and multi-channel image data loop acquisition algorithm to achieve multi-channel image data through the synchronous RS422 bus into the FPGA, time-sharing by the FPGA for each road data collection, and then Gigabit Ethernet Network sent to the host computer. In the FPGA, the MAC address, IP address, UDP header and channel number are added to each image data, and the multi-channel data collection algorithm is adopted to overcome the phenomena of image data loss and channel disorder. 8 camera modules as a data source for testing, the results show that each road image data is completely correct to the host computer for display, image data packet loss rate of 0%, repeat rate of 0%, to meet the expected requirements, to achieve the purpose of detection of multi-channel transmission of data.
机译:为了能够同时采集多通道图像数据,提出了将数据包发送到主机的方法,提出了一种基于以太网传输的多通道数据采集方案。利用同步RS422总线+ FPGA +千兆以太网硬件平台和多通道图像数据循环采集算法,通过同步RS422总线将多通道图像数据导入FPGA,由FPGA分时对每条道路数据进行采集,然后千兆以太网发送到主机计算机。在FPGA中,将MAC地址,IP地址,UDP报头和通道号添加到每个图像数据中,并采用多通道数据收集算法来克服图像数据丢失和通道混乱的现象。 8个摄像头模块作为数据源进行测试,结果表明,每条路的图像数据完全正确地显示在主机上,图像数据的丢包率为0 \%,重复率为0 \%,满足预期要求,达到检测多通道数据传输的目的。

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