基于GM812X芯片的多串口扩展技术应用  

Application of the Technology of Multiple Serial Ports Expansion Based on GM812X Chip

作　　者：冯显英[1] 褚良敏[1] 

机构地区：[1]山东大学机械工程学院,济南250061

出　　处：《自动化仪表》2006年第6期64-65,73,共3页Process Automation Instrumentation

摘　　要：综合介绍了当前使用的各种串口扩展方案,同时也对新出的国产串口扩展芯片GM812X的工作原理及特点作出了较为详细的说明。最后针对棉花业中对多串口数据采集的需要,结合此芯片的特点建立了一个多串口数据采集及条形码自动生成系统,系统可以满足各种环境下的串口数据采集。系统的成功应用表明该方案具有结构简单、成本低、开发使用方便等特点。Various strategies for serial port expansion currently used are introduced, and the working principle and characteristics of China-built serial port expansion chip of GM812X chip are presented in detail. Aiming at the need for data acquisition from multiple serial ports in cotton industry, a multi-serial-port data acquisition and bar code auto-generation system is built by combi,fing the features of the chip. The serial port data acquisition under any condition is satisfied in the system. Successful application shows that the system features simple structure, low cost and convenient development and application.

关 键 词：串口扩展 数据采集 条码生成 单片机 

分 类 号：TP211.51[自动化与计算机技术—检测技术与自动化装置]