基于FPGA的串行多节点数据采集传输系统的应用研究

多节点分布式传感器的数据采集与传输系统有着广泛的应用，其物理层实现主要分为串行及并行两种方式。针对特定的应用场景，选用串行传输的实现方式，设计以FPGA芯片、RS485芯片及AD芯片为核心的硬件平台，使用verilog语言设计FPGA的RTL（Register Transfer Level）逻辑代码，并在Modelsim中完成了功能仿真验证。最终实现了物理层为串行传输、传输层为总线模型的数据采集传输系统，该系统RTL代码设计简单，维护性强，可靠性高，占用芯片资源少，具有一定的工程应用价值。

Application research of multi-node data acquisition and transmission system of underwater towing cablebased on FPGA

The data acquisition and transmission system of multi-node distributed sensors has a wide range of applications, and its physical layer implementation is mainly divided into serial and parallel modes. The serial transmission is adopted for this project, and the hardware platform with FPGA chip, RS485 chip and AD chip is designed. The RTL (Register Transfer Level) code of is designed by Verilog and functional verification is complete in Modelsim. The RTL code of the system is simple in design, strong in maintenance, high in reliability, and occupies less chip resources, and has certain engineering application value.