单片机控制四层教学电梯.pdf
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单片机控制四层教学电梯
[摘要]：本系统采用两片单片机（89C52）作为内外招信号的检测和控制核心。
内外招使用按键按下与否带来的电平的改变来控制对应的单片机输入或输出口
工作。楼层检测使用反射式红外传感器；轿厢负载采用精密压力传感器；速度控
制采用易控的步进电机外加微小误差转子；在竖井的侧面固定了轨道以防止轿厢
的晃动。基于这些完备而可靠的硬件设计，使用了一套独特的软件算法，实现了
电机在运动和加速经及减速过程的精确控制。
[关键词]：单片机；步进电机；A/D转换；555定时器；传感器；C语言编程；流
程图
[Abstract]： Inside and outside this system uses two piece of monolithic integrated
circuits (89C52) to take the move of signal examination and the control core. The
inside and outside move of use pressed key presses down the level change which or
not brings to control corresponding the monolithic integrated circuit input or the outlet
work. Floor examination use reflection type infrared sensor; The sedan theater box
load uses the precise pressure transmitter; The speed control uses easily to control
step-by-steps the electrical machinery in addition light error rotor; Fixed the track in
the shaft side to prevent the sedan theater box rocking. Based on these complete and
reliable hardware design, has used a set of unique software algorithm, has realized the
electrical machinery in the movement and the acceleration after and the moderating
process accuracy control.
[Keywords] ： MCS-51.89C52. Step-by-steps the electrical machinery; A/D
transformation; 555 timers; Schmitt trigger; Sensor; C language programming; Flow
chart
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