摘要
在复杂工业制造场景中,视觉检测系统的广泛应用使得工业通信网络需同时承载高带宽视频流和高实时性控制数据流。传统以太网在该混合流量下常出现明显的时延与抖动,难以满足确定性通信要求。针对厚板剪切线典型工业场景,设计一种融合开放平台通信统一架构(OPC UA)协议和时间敏感网络(TSN)调度机制的通信架构。该架构采用C/S模型,结合IEEE 802.1AS时钟同步与802.1Qbv时间感知调度技术,对关键控制数据流进行静态时隙分配与优先级控制,以满足工业场景对通信确定性的严格要求。为系统性评估其性能,引入基于源时间戳与客户端接收时间差的非侵入式时延测量方法,并构建平均时延、峰值抖动、最大瞬时变化、RTP抖动与标准差等多维性能评估指标。在高强度UDP背景流干扰的实验环境中测试表明:所提通信架构在端到端时延稳定性和抖动抑制方面均显著优于传统以太网。以1 Gb/s UDP背景负载为例,相比普通交换机网络,平均端到端时延降低约5.02%,峰值抖动和最大瞬时变化分别降低约66.19%和71.05%,实时传输协议抖动与端到端时延标准差分别降低约24.92%和21.61%。该研究不仅为OPC UA与TSN融合架构在高负载工业现场的实际部署提供了定量评估方法,也为工业以太网协议向更高实时性和确定性方向的演进提供了技术依据。
In complex industrial manufacturing scenarios,the widespread adoption of visual inspection systems require industrial communication networks to simultaneously handle high-bandwidth video streams and high real-time control data streams.Traditional Ethernet often exhibits significant delay and jitter under such mixed traffic,making it difficult to meet deterministic communication requirements.Targeting a typical industrial scenario in a thick-plate shearing line,a communication architecture integrating the OPC UA protocol and time-sensitive networking(TSN)scheduling mechanisms was designed.A C/S model was employed in the architecture,combined with IEEE 802.1AS time synchronization and 802.1Qbv time-aware scheduling techniques to ensure static time slot allocation and priority control for critical control data streams,thereby meeting stringent determinism requirements in industrial communications.To systematically evaluate its performance,a non-intrusive delay measurement method based on source timestamps and client-side reception time differences was proposed,and a multi-dimensional performance evaluation framework including average delay,peak jitter,maximum instantaneous variation,RTP jitter and standard deviation was established.Experimental validation under conditions with high-intensity UDP background traffic demonstrates that the proposed architecture significantly outperforms traditional Ethernet regarding end-to-end delay stability and jitter suppression.For a 1 Gb/s UDP background load,compared with a conventional switched network,the mean end-to-end delay is reduced by approximately 5.02%;the peak-to-peak jitter and the maximum instantaneous variation decrease by about 66.19% and 71.05%,respectively;furthermore,the real-time transport protocol jitter and the end-to-end delay standard deviation are reduced by around 24.92% and 21.61%,respectively.The results provide quantitative assessment methods for the practical deployment of OPC UA and TSN integrated architectures in high-load industrial environments and offer technical support for the evolution of industrial Ethernet protocols towards higher real-time performance and determinism.
作者
王新迪
王双园
王全胜
殷宏彬
解子凡
WANG Xindi;WANG Shuangyuan;WANG Quansheng;YIN Hongbin;XIE Zifan(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Research Institute,Baoshan Iron&Steel Co.,Ltd.,Shanghai 201999,China)
出处
《机床与液压》
北大核心
2026年第5期191-197,共7页
Machine Tool & Hydraulics
关键词
OPC
UA
时间敏感网络
时延测量
通信性能评估
监控系统
OPC UA
time-sensitive networking(TSN)
delay measurement
communication performance evaluation
monitoring system
