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为了满足UUV拖线阵数据采集传输的低功耗要求,设计了一种低功耗的多通道数据采集节点,选用低功耗FPGA和低功耗、高精度的ADC芯片进行数据采集设计,通过RS-485接口发送节点的采集数据,使用曼彻斯特编码保证串行码流直流平衡,提高了数据传输的稳定性和可靠性,最后给出了多通道数据采集节点具体电路实现方法和软件设计流程。
In order to meet the low power consumption requirements of UUV dragline array data acquisition and transmission, a low-power multi-channel data acquisition node is designed. Data acquisition is designed by low power FPGA and low power consumption, high precision ADC chip. The RS-485 interface sends the collected data of the node, and the Manchester code is used to ensure the DC balance of the serial code stream, thereby improving the stability and reliability of the data transmission. Finally, the concrete circuit implementation method and software design flow of the multichannel data acquisition node are given.