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本文针对实时控制系统中,经常会遇到如何才使计算机在不间断与外部设备进行数据交换的同时,不影响 CPU 有足够的时间对数据进行分析和处理,作者提出了在设计一个实时控制闭环系统时采用一种新型的 AD/DA 接口板。其特点是在设计上采用增设一辅 CPU 来分担主 CPU 的一部分工作。文中详细地介绍了系统的设计原理和如何解决了两个 CPU 之间的“碰撞”问题。本接口板使用方便,价格低廉,用户可根据各自的需要,选用这种 AD/DA 接口板。
In this paper, real-time control system, often encountered how to make the computer without interruption and external devices for data exchange, without affecting the CPU has enough time to analyze and deal with the data, the author proposed in the design of a real-time control loop The system uses a new type of AD / DA interface board. It is characterized by the design of an additional CPU to share part of the work of the main CPU. The article describes in detail the design principle of the system and how to solve the problem of “collision” between two CPUs. The interface board easy to use, low cost, users can choose according to their own needs, this AD / DA interface board.