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在自动控制的过程中,系统的输入和输出是两个非常关键的因素,它们直接影响以后数据处理的精度和对外部元件的控制精度。概述了PIC单片机的特点及功能;对PIC单片机输入和输出的多种方式进行了详细的研究;阐述了PIC与上位机通讯中的电平转换问题;最后结合开发的张力控制系统介绍了PIC单片机的实际应用,为使用PIC单片机作为自动控制核心提供了参考。
In the process of automatic control, the input and output of the system are two very critical factors, which directly affect the accuracy of data processing and the control accuracy of external components. The characteristics and functions of PIC microcontroller are introduced. The various ways of PIC microcontroller input and output are studied in detail. The problems of level conversion in the communication between PIC and host computer are expounded. At last, the PIC control system is introduced. The practical application of PIC microcontroller for the use of automatic control core provides a reference.