基于现场总线的异步串行通信接口转换系统设计  

Design of asynchronous serial communication interface conversion systembased on field bus

作　　者：潘浩[1] PAN Hao(College of Information Engineering,Huanghuai University,Zhumadian 463000,China)

机构地区：[1]黄淮学院信息工程学院,河南驻马店463000

出　　处：《现代电子技术》2020年第21期17-20,26,共5页Modern Electronics Technique

摘　　要：传统异步串行通信接口转换系统转换过程中,CPU利用率差,转换的数据可靠性不高。为了解决上述问题,基于现场总线设计了一种新的异步串行通信接口转换系统。针对系统硬件和软件进行设计,利用核心控制模块、CAN总线通信接口、PROFIBUS-DP总线通信接口模块、异步串行通信接口转换模块、电源转换模块和总线选择开关模块构成硬件结构,在总架构的基础上给出了拓扑结构,重点设计了核心控制模块和PROFIBUS-DP总线通信接口模块。在硬件结构基础上设计软件程序,并在程序模块基础上研究了软件转换流程。为检测系统性能,设计对比实验,结果表明,基于现场总线设计的异步串行通信接口转换系统能够准确地转换出数据,确保结果的可靠性,CPU利用率高于传统系统。In the conversion process of traditional asynchronous serial communication interface conversion system,the utilization of its CPU is poor and the reliability of converted data is not high.In order to solve the above problems,a new asynchronous serial communication interface conversion system is designed based on field bus.The hardware and software of the system are designed.The core control module,CAN bus communication interface,PROFIBUS⁃DP bus communication interface module,asynchronous serial communication interface conversion module,power supply conversion module and bus selection switch module are used to constitute the hardware structure.On the basis of the general framework,the topology structure is given.The core control module and the PROFIBUS⁃DP bus communication interface module are emphatically designed.On the basis of the hardware structure,the software program is designed,and the software conversion process is studied on the basis of the program module.In order to test the performance of the system,a comparative experiment is designed.The experimental results show that the asynchronous serial communication interface conversion system based on field bus can accurately convert data and ensure the reliability of the results,and the utilization rate of its CPU is higher than that of the traditional system.

关 键 词：异步串行通信 通信接口转换 现场总线 系统设计 控制模块 实验分析 

分 类 号：TN915-34[电子电信—通信与信息系统]