0.6米跨超声速风洞安全联锁控制系统研制

Development of Safety Interlocking Control System for 0.6m Trisonic Wind Tunnel

摘要:

0.6米跨超声速风洞控制系统采用基于现场总线和网络的开放式集散系统，具有运行控制设备多、逻辑关系复杂的特点，为保证风洞复杂系统的状态监控和运行安全，研制了安全联锁控制系统。系统硬件包括应用层上位机、中间层PLC、执行层各设备终端，软件采用共享变量服务器SVE统一管理实现通信；通过硬件电路和ProfiNet连接两种方式的结合，实现了对风洞各设备的状态信息检测和控制指令发送；通过对风洞状态监控、安全保护功能进行分析，采用了三级冗余安全关车策略的关键技术和方法。经调试实现了检测与控制所有与风洞运行安全相关的信息和设备，能够在风洞运行出现异常时，抢占控制权限，控制各设备在安全状态下关车，压力控制精度优于0.5%。经实际应用满足了技术上保护风洞设备和参试人员安全的工程应用。

Abstract:

The 0.6m trisonic wind tunnel control system adopts an open distributed system based on Fieldbus and network, which has many operation control equipments and complex logic relationship,to ensure the state monitoring and operation safety of wind tunnel complex system, a safety interlocking control system is developed. The hardware of the system includes upper computer of application layer, the middle layer PLC, and the device terminals of execution layer. The software uses the shared variable server SVE to manage the communication in a unified manner, the combination of hardware circuit and ProfiNet connection realizes the state information detection and control instruction sending of each device of wind tunnel. Through the analysis of the status monitoring and safety protection functions of wind tunnel, the key technologies and methods of three-level redundant safe shutdown strategy are adopted. After debugging, all information and equipment related to the safety of wind tunnel operation are detected and controlled. When abnormal operation of wind tunnel occurs, the control right can be preempted, and the shutdown of all equipment in safe state can be controlled. The pressure control precision is better than 0.5%. The practical application of the wind tunnel meets the engineering application of protecting the safety of the wind tunnel equipment and the test personnel technically.