基于EtherCAT和LabVIEW的风洞安全联锁及状态监测系统设计

The Design of Safety Interlocking and State Monitoring System Based on EtherCAT and LabVIEW

摘要:

安全联锁与状态监控系统是保障风洞运行安全的重要系统，基于EtherCAT环网实现了风洞联锁和监控信号的实时、可靠采集，构建了多网络融合的联锁与状态监控系统。介绍了系统的硬件组成和软件总体功能，利用TwinCAT2设计下位机安全联锁软件，实现了吹风前和吹风过程中的联锁策略，保障了风洞运行安全；基于LabVIEW开发了状态监测软件，通过TCP/IP、OPC等多种通信协议实现了多网络数据利用，利用LabVIEW DSC多个子模块实现了数据存储与查询功能，利于数据溯源。应用结果表面，系统具有良好的实时性和可靠性，功能完备、界面友好，在使用过程中有效保证了风洞及设备安全，并为设备性能分析提供有效分析手段。

Abstract:

The safety interlocking and state monitoring system is important for wind tunnel to keep safety. The signals about safety interlocking and state monitoring are collected in real-time and reliably through EtherCAT looped network. The system joins in several networks. The equipment components of the system and function of software are introduced. The software of PLC part that makes safety locking strategies before and during blowing come true is designed by TwinCAT2, which protects the safety of wind tunnel. The state monitoring software designed by LabVIEW2015. The system utilizes data from several networks through TCP/IP, OPC and so on, and has the function to store and search data by using several submodule of LabVIEW DSC, which makes the tracing to the source easily. The application results show that the system has good real-time performance and reliability, complete functions and friendly interface. It effectively guarantees the safety of wind tunnel and equipment in the use process, and provides effective analysis means for equipment performance analysis.