采用单片机技术改进DDL-Ⅲ绘图系统

Improvement of DDL-Ⅱ Mapping System by Using Single-chip Computer

为了延长进口设备的使用年限,获得最佳经济效益,急需用新型绘图仪改造原 DDL-Ⅲ系统的CRT 绘图仪。根据 IEEE-488总线及 GPIB 接口卡的功能特点,在对 DDL-Ⅲ绘图数据采集及数据格式进行分析的基础上,阐述了用 Printrex820绘图仪改造原有 CRT 绘图仪的智能接口卡的软硬件设计过程。

To expand the usage life of import equipment and obtain optimal economic efficiency,a new type of plotting apparatus is badly needed to reconstruct CRT plotter used in DDL-Ⅲ system. Based on the characters of IEEE-4888 bus bar and GPIB interface, data collection and collection format in DDL-Ⅲ system are analyzed,software and hardware design for reconstructing the intelligent interface card used in CRT plotter with Printrex 820 plotting apparatus is described.