摘要
首先指出利用与逻辑门构建非总线型对等式网络的设计方案不可实现,详细介绍利用与逻辑门构建总线型对等式网络的改进设计方案,分析了其失败的原因;最后借助总线型芯片MAX487构建了总线型网络,给出了标准化的RS485网络连接器的电气设计方案,利用总线时隙法解决了总线争用问题,给出了网络终端"即插即用"功能实现的软件解决方案,绘出了系统软件的编程思路,最后借助仿真软件,成功验证了网络系统设计。
It is pointed out that the design scheme of constructing non-bus peer-to-peer network with AND logic gates is impossible to achieved.The updated scheme of bus-type peer-to-peer network with AND logic gates is given in detail.However,it is failed either.With the chip of MAX487,network is constructed.The schematic diagram of RS485 network connector is given.Time slot of dealing with bus competition is provided.The implementation method of plug and play system of the network is recommended.The programming method of system software is recommended.Finally,the feasibility of network system is verified by simulation software.
作者
李浩
凡明春
陈邹铭
李长艳
LI Hao;FAN Ming-chun;CHEN Zou-ming;LI Chang-yan(College of Mechanical and Electrical Engineering,Shougang Institute of Technology,Beijing 100144,China;College of Mechanical and Electrical Engineering,Shougang Technicial College,Beijing 100144,China;Jiadianfengxiang Network Technology Co.,Ltd.,Beijing 100013,China)
出处
《电子设计工程》
2020年第5期176-180,共5页
Electronic Design Engineering
