基于Modbus的RS-485总线通信体系的流量控制协议研究

发布时间：2018-04-30 14:17

本文选题：RS-485总线 + Modbus协议　；参考：《兰州理工大学》2014年硕士论文

【摘要】：RS-485总线在工业中得到极其广泛的应用。针对基于Modbus协议的RS-485总线通信体系在需求大量信息传输中出现的拥堵问题,本文研究了基于Modbus的RS-485总线网络的流量控制协议的解决方法,利用流量控制协议来进行有效解决因传输大量信息所造成的拥堵问题。本文深入研究了Modbus通信协议和流量控制协议的相关问题,取得的研究成果如下： (1)根据Modbus协议和流量控制协议的通信原理和工作流程,采用模块化方案设计,分别改进了Modbus通信协议的详细模块化设计和流量控制协议的详细模块化设计,具体的模块化应承担的工作任务,为Modbus协议和流量控制协议的融合提供了条件和有利的基础。 (2)将量子信息论中量子纠缠态应用于流量控制协议中的滑动窗口通信协议,提出了基于量子纠缠的滑动窗口量子通信协议。从量子信息论出发建立量子信道,以量子纠缠提出滑动窗口量子通信协议的通信过程,进而具体的性能分析有效表明滑动窗口量子通信协议能够有效提高通信效率。 (3)结合Modbus协议和流量控制协议的模块化设计,提出了基于Modbus和流量控制的融合模块解决方案。将流量控制协议融合到Modbus协议中以解决Modbus通信网络中将出现的网络拥塞问题。同时以串口通信技术为基础,采用流量控制协议中双速率三色标记算法,构建了主机和从机的协议栈,模拟实现了Modbus通信。本课题主要是基于RS-485总线的工业通信系统应用,对于提出的协议还需进行必要的测试以及在各种工业设备上进行实时通信检验。只有得到广泛的检测与应用,才能发现不足并进行完善,从而确保能够协议的普适通用性。
[Abstract]:RS-485 bus is widely used in industry. In order to solve the problem of congestion in RS-485 bus communication system based on Modbus protocol, this paper studies the solution of RS-485 bus network traffic control protocol based on Modbus. Traffic control protocol is used to solve the congestion problem caused by the transmission of a large amount of information. In this paper, the related problems of Modbus communication protocol and flow control protocol are deeply studied, and the research results are as follows: 1) according to the communication principle and workflow of Modbus protocol and flow control protocol, the detailed modularization design of Modbus communication protocol and the detailed modularization design of flow control protocol are improved, respectively. The specific task of modularization provides a favorable basis for the fusion of Modbus protocol and flow control protocol. 2) A sliding window communication protocol based on quantum entanglement is proposed by applying quantum entangled states in quantum information theory to flow control protocols. Based on the quantum information theory, the quantum channel is established, and the communication process of the sliding window quantum communication protocol is proposed by quantum entanglement. Furthermore, the concrete performance analysis shows that the sliding window quantum communication protocol can effectively improve the communication efficiency. 3) combining the modularization design of Modbus protocol and flow control protocol, a solution of fusion module based on Modbus and flow control is proposed. Traffic control protocol is integrated into Modbus protocol to solve the network congestion problem in Modbus communication network. At the same time, based on the serial communication technology, the protocol stack of host and slave is constructed by using the two-rate tricolor marking algorithm in the flow control protocol, and the Modbus communication is simulated. This paper is mainly about the application of industrial communication system based on RS-485 bus. It also needs to carry out necessary tests for the proposed protocol and real-time communication test on all kinds of industrial equipment. Only when it is widely detected and applied can it be found and perfected to ensure the universality of the protocol.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN915.04

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