标题： 基于CPS的可靠图像传输 显示英文标题

标题： Reliable Image Transmission in CPS-based Pub/Sub

摘要： 通信和自动化的发展推动了分布式网络的扩展，这对工业应用中需要可靠图像处理和实时适应性的物联网和 CPS 发展至关重要。 尽管广泛采用，但在高流量场景下间歇性连接条件下，关于 MQTT 协议在图像共享和传输方面的性能研究仍存在文献空白，这限制了其在关键物联网和 CPS 应用中的使用。 在此背景下，本研究考察了利用基于 MQTT 的发布/订阅通信模型的物联网和 CPS 工业系统中实时图像传输的可靠性。 它关注网络中断和高数据流量的场景，通过一系列受控测试平台验证实验评估分布式系统的性能。 实验验证表明，虽然基于 MQTT 的系统在正常条件下能够维持可靠的传输，但其恢复能力取决于故障点，在中断影响协调器节点时可以完全恢复，而在生产者节点或代理节点受影响时则只能部分恢复。 该研究还确认了系统能够防止重复错误，并能很好地适应不断增加的网络需求，加强了其在需要高效且具有弹性数据处理的工业应用中的适用性。 显示英文摘要

摘要： Developments in communication and automation have driven the expansion of distributed networks, essential for IoT and CPS development in industrial applications requiring reliable image processing and real-time adaptability. Although broadly adopted, there is a literature gap regarding the performance of MQTT protocol for image sharing and transmission under high-traffic scenarios with intermittent connectivity, restricting its use in critical IoT and CPS applications. In this context, the present work examines the reliability of real-time image transmission in IoT and CPS industrial systems that utilize the MQTT-based publish/subscribe communication model. It focuses on scenarios with network interruptions and high data traffic, evaluating the performance of a distributed system through a series of controlled testbed validation experiments. Experimental validation demonstrated that while the MQTT-based system sustains reliable transmission under normal conditions, its recovery capability depends on the failure point, with complete restoration occurring when disruptions affect the Orchestrator Node and partial recovery when the Producer Node or Broker are affected. The study also confirmed that the system prevents duplicate errors and adapts well to increasing network demands, reinforcing its suitability for industrial applications that require efficient and resilient data handling.