一种单片机综合实验系统的设计

为了在实验室模拟工业场合,研究和解决工业现场检测和控制问题,设计了一种基于AT89C51的单片机综合实验系统.以单片机为核心,通过A/D和D/A转换模块实现模拟量的采集和控制,利用按键控制模块完成系统参数设置,利用液晶和可编程时钟等模块进行采集数据和时间等的显示,通过串行通信模块、RS232和RS485总线实现单片机与计算机的通信,通过仿真机在线编写、调试和修改单片机程序.结果表明系统能够进行多路模拟信号的采集、处理、显示、控制和远距离通信,而且采集数据正确率高、通信实时性强,控制可靠.

Design of an Integrated Experiment System Based on SCM

To simulate industrial situations in a laboratory,an integrated experiment system based on AT89C51 is designed for studying and solving detection and control problems at industrial sites.It is based on a SCM,realizes collection and control of analog signals via A/D and D/A conversion modules,completes system parameter setup by a keystoke module,displays collected data and time via a LCD and a programmable clock module,realizes communication between the SCM and a computer by a serial communication module,RS232 and RS485 bus,and compiles,debugs and modifies SCM programs via an emluator.Experimental results show that the system can collect,dispose,display,control,and communicate multi-channel signals.Besides,the collected data are precise,its communication is real-time,and control performance is reliable.