摘要
为适应高校程控交换和ARM嵌入式技术的教学需要,设计了以ARM7处理器S3C44B0、实时嵌入式操作系统μC/OS-Ⅱ和图形界面系统μCGUI为基础的嵌入式程控交换实验系统。实验系统包括了时分交换、DTMF双音多频收发等程控交换的多项技术。同时硬件设计中加入了小键盘和STN彩屏,方便实现人机交互。该实验系统已在高校中得到应用,运行结果表明:实验系统运行稳定,能有效加深对程控交换和嵌入式技术的理解。
In order to adapt the teaching requirements of stored program switching and ARM embedded technologies in universities, an embedded stored program switching lab system that is based on ARM7 processor S3C44B0, the real-time embedded operating system μC/OS-Ⅱ and the graphical interface system μCGUI is designed. The experimental system includes many stored program switching technologies, such as timesharing exchange, DTMF doable sound multi-frequency receiving and sending, etc. In addition, in hardware design, small keypad and the STN color screen are included, which facilitates the realization of the man-machine interaction. This lab system has been applied in the universities. The operational results indicate that the system runs stably, and it can effectively deepen the understanding to the stored program switching and the embedded technology.
出处
《自动化仪表》
CAS
2007年第6期6-9,共4页
Process Automation Instrumentation
关键词
嵌入式系统
实时操作系统
程控交换
Embedded system Real-time operation system Stored program switching
