摘要
针对某些监控系统实时性要求高、长距离通信、节点众多、成本高等问题,利用XY·CN总线和虚拟仪器技术设计了一个嵌入式监控系统。该系统包含3个部分:PIC单片机分节点,ARM主节点和PC机。PIC单片机分节点将现场采集到的数据通过XY·CN现场总线发送给ARM主控节点,并接收总线的控制命令控制现场设备。ARM主节点通过XY·CN现场总线将各个分节点的数据收集并处理,然后通过以太网将数据发送至上位机。上位机采用在PC机上运行的虚拟仪器,用于存储、显示各个节点的数据。所设计的系统采用双绞线通信,并采用总线供电,具有实时性好,低成本,扩展灵活等特点。
A new embedded supervising and control system based on XY · CN bus is designed to meet the actual demand in high real-time requirement,long distance communication,numerous network nodes and cost saving. The system consists of three parts： PIC MCU sub nodes,ARM master node and PC. PIC MCU sub nodes send the field data to ARM master node and receive the command to control field devices. ARM master node collects the sub node data by XY·CN bus and processes it. Then the processed data are transferred to monitor computer by Ethernet. The monitoring computer is a computer running virtual instrument. It is used to store and display the data of each node. The system uses twisted pair communication and bus power supply. The designed system has the characteristics of good real-time,low cost,flexible expansion and so on.
出处
《实验室研究与探索》
CAS
北大核心
2017年第8期158-160,共3页
Research and Exploration In Laboratory
基金
北京理工大学第十批教育教学改革项目(2013-074)
关键词
监控系统
XY·CN总线
虚拟仪器
嵌入式
supervising and control system
XY·CN bus
virtual instrument
embedded systems
