摘要
本设计以AT89C55单片机为核心,采用16C554A实现串口扩展,主要应用RS-485标准和MODEM串行通信技术,解决了与多个从机之间的通信问题。实践表明,该系统可以极大地降低软件的开销,并提高系统效率。
In this scheme, 16C554A is adopted to expend the serial port of single-chip microcomputer , meanwhile AT89C55 is used as the core chip of the communication controller. The design can realize communication between host and slave computers through RS - 485 and MODEM serial communication interface. So that communication burden of PC will be relieved. The experiments show that this system can guarantee not only high transmission reliability, but also real - time controlling by the application of communication controller.
出处
《传感器世界》
2009年第11期36-38,共3页
Sensor World
