以太网分布式测试系统中实时传输技术研究

Study on Real-time Transmission of Distributed Test System Based on Ethernet

介绍了分布式测试系统中通信的特点;分析交换式以太网的工作方式及以太网中端到端延时的因素;针对测试系统中实时传输的要求,利用UDP传输的高效性,提出一种基于UDP用于测试领域的可靠传输协议RUT(Reliable UDP for Test System);通过设置接收缓冲区,发送缓冲区,以及对发送的数据进行确认等措施,保证数据在测试网络中可靠传输;经过测试该传输协议具有较好实时性和可靠性,并应用于工业测控领域。

Distributed test system communication features ware introduced. Analyzed switched-Ethernet work way, and end-to-end communication delay of switched Ethernet. Under the Test system in real-time transmission requirement, a UDP-based for the test field of BUT （ Reliable UDP for Test System） reliable transmission protocol was proposed. By setting receive buffer, sent buffer and data confirming ensure reliable transmission. After testing the transmission protocol has better real-time and reliability, and applied to the field of industrial measurement and control.