摘要
针对环网结构中数据传输速率低以及可靠性差的问题,提出了一种高速高可靠性分布式采集与传输的设计。设计中以FPGA作为逻辑控制芯片,双通道LVDS作为物理层通信接口,正反码作为差错控制编码方式。在对分布式采集拓扑结构的选型、物理层接口和数据链路层进行讨论的基础上,重点介绍了环网总线结构下分布式数据传输的原理和方法。最后给出了设计的实验结果,验证了本设计的可靠性。该设计具有速度高、可靠性高的特性,并已成功用于某项目中。
Proposed a high-speed,high-reliability distributed acquisition and transmission scheme for the ring network bus structure in the data transmission rate was low and the problem of poor reliability. The design use FPGA as the logic control chip,dual channel LVDS as physical layer communication interface,positive and inverse codes as error control coding. The paper discussed the selection of distributed collection Topology,the physical layer interface and the data link layer,focusing on the principles and methods of distributed data transmission ring network bus struc- ture. Finally,the test result was given to verify the feasibility of the design. The program has a high-speed,high reli- ability features and successfully used in a project.
出处
《自动化与仪表》
北大核心
2014年第1期30-33,共4页
Automation & Instrumentation
基金
国家自然科学基金重点项目(61004127)
关键词
环网总线
分布式采集
高可靠性
低压差分信号
ring network
distributed collection
high reliability
low voltage differential signaling （LVDS）
