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文章较为详细地介绍了利用上下位机的并行I/O口进行高速实时通信和传输数据的新方法。该方法基于快速响应中断通过上下位机的并行I/O口实现实时通信和传输 ,一次数据通信时间为 5 0 μs左右 ,很好地解决了核聚变实验装置对快速控制的要求。同时该方法也对其他每次传送数据量不大但要求快速响应的实时控制系统的实现具有参考价值。
This paper introduces in detail a new method of using high-speed real-time communication and data transmission between upper and lower computer parallel I / O ports. This method realizes real-time communication and transmission through the parallel I / O port of the upper and lower computer based on the quick response interrupt. The time of data communication is about 50 μs, which solves the requirement of rapid fusion control of nuclear fusion experiment device. At the same time, the method also has reference value for the realization of real-time control system, which does not require large amount of data each time and requires fast response.