基于EtherCAT总线的串联型分布式数据采集系统设计

Design of Series-Connection Distributed Data Acquisition System Based on EtherCAT Bus

摘要:

针对海洋工程实验室现场数据采集过程中,数据量大、测点分散、实时性要求高、数据种类不一致的问题,设计了一种基于实时工业以太网EtherCAT总线的串联式数据采集系统;从整体结构、工作原理、主站软件和从站软硬件方面详细介绍了系统的方案设计;在实验水池中,通过采集实际波浪信号对数据采集系统进行了测试;结果表明,系统性能稳定、精度高、实时性好,为分布式数据采集监控系统的研究提供了应用和技术上的参考。

Abstract:

Aiming at the problems of the large amount of data, geographically fragmented acquisition positions, high real-time performance demanding and a variety of data types in the process of data acquisition, we build a series-connection data acquisition system based on EtherCAT bus. The aspects of over-all structure, operating principle, master station software and hardware and software of slave station were introduced in detail. In order to verify the performance, we captured the height of wave in our lab. The experimental results indicate that the system has high reliability and real-time performance. The designed data acquisition system can provide references for the research of distributed data acquisition and control system.