【摘要】 本文根据微机控制系统应用于生产过程，其环境恶劣，来自于外部干扰多的特点，提出了应用光电耦合器件实现开关量输入／输出，前向通道，后向通道等的隔离方法，并作了较详尽地讨论和说明。经在多项科研成果中应用，均取得了满意的效果。更多还原

【Abstract】 A computer control system is employed in industry process of ton. Its environment is bad. and there are more outside interference. The design descvifid in this paper is advanced by using photoelectricity coupling devices. These segregation methods of input and output for snitch quantit、passage in front and behind are discrssed in detail. The feasibility has been proved by applical in many scientific research projtcts.更多还原