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本文讨论了在数据采集系统中实现数据传送的几种方法,通过给出一个用于瞬态过程测试和控制的数据采集和处理系统的设计实例,介绍了这种由 Z80—CPU 控制的数据采集系统的基本结构及控制过程,并提出了一种由软件控制的使主机内存扩展超出原最大存贮量的重叠地址存贮技术,解决了过程控制程序 ROM 体分割系统工作内存空间的问题。从而使该测试系统能够完成对多个问题的处理和控制。本文还叙述了系统监控程序的基本流程。
This article discusses several ways to implement data transfer in a data acquisition system. By presenting a design example of a data acquisition and processing system for transient process testing and control, the Z80-CPU-controlled data acquisition The basic structure of the system and the control process are presented. A software-controlled overlay address storage technology that expands the host memory beyond the original maximum storage capacity is proposed, which solves the problem of working memory space in the process control program ROM body partitioning system. So that the test system to complete the handling of multiple issues and control. This article also describes the basic process of system monitoring program.