"基于S7-200系列PLC的自动投币洗衣机控制系统设计与应用"

ocial, and convenient, is being accepted by more and more people. In densely populated areas, self-service coin-operated washing machines have a very broad application prospect. The fully automatic washing machine control system utilizes the characteristics of the Siemens S7-200 series PLC to control buttons, switches, and other input/output points, achieving the automation of the washing process. Since the time for washing, draining, and spinning is controlled by the timers inside the PLC, changing the parameters of the timers can change the time. By using the analog input/output channels and PID algorithm on the PLC, temperature signals can be collected and controlled to achieve the desired effect. Keywords: S7-200PLC, washing machine, timer, automatic coin insertion 随着时代的发展，社会生活节奏的加快，24小时不间断营业无人值守的自助经营模式因其自主、自助、便利的特性，正被越来越多的人所接受。人口集中居住场所，自助投币式洗衣机具有非常广阔的应用前景。 全自动洗衣机控制系统利用了西门子S7-200系列PLC的特点，对按钮、开关等其他一些输入/输出点进行控制，实现了洗衣机洗衣过程的自动化。由于每遍的洗涤、排水、脱水的时间由PLC内定时器控制，所以只要改变定时器的参数就可以改变时间。利用PLC上具有的模拟量输入输出通道，PID算法，进行温度信号的采集与控制，达到了预期的效果。 关键词：S7-200PLC，洗衣机，定时，自动投币