WL2C-A时频数据采集系统

WL2C-A time-frequency data acquisition system

本文提出了采用可编程门阵列(FPGA)和ARM处理器协同控制方法,采用GPS+OCXO的时钟同步方式,实现了分布式的微弱电磁信号的同步数据采集;每个分布式数字采集站内设计有独立的数据存储单元,各数据采集站之间可采用220m有线级联网络或无线WiFi通信进行数据传输与监控,从而实现分布式数据采集与控制,适应了各种不同的工作需要和野外工作环境。野外性能对比实验结果表明,分布式的数据采集站不仅保证了采集信号的质量和稳定性,而且提高了野外工作效率。

In this paper, a cooperative control method based on field programmable gate array(FPGA) and ARM processor is proposed, and the synchronous data acquisition of a distributed weak electromagnetic signal is realized by using the clock synchronization mode of the GPS+OCXO. An independent data storage unit is designed in each distributed digital acquisition station. 220 m wired cascade network or WiFi communication can be used for data transmission and monitoring between each data acquisition station, so that distributed data acquisition and control can be realized, which adapts to various working needs.The results of field performance comparisonexperiment show that the distributed data acquisition station not only ensures the quality and stability of the acquisition signal but also improves the field working efficiency.