摘 要随着时代的进展,社会生活节奏的加快, 24 h 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宽阔的应用前景。 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，开关等其它一些输入/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AbstractWith the development of the times, the social life rhythm accelerate, 24 h uninterrupted operating unattended self-help management mode due to its characteristic of independent, self-help, convenient, is being accepted by more and more people. Residential population is concentrated, self-service coin operated washing machine has a very broad application prospects.Through the design of the system, the Siemens S7-200 series features an in-depth understanding of PLC. Automatic washing machine control system using PLC Siemens S7-200 series features, buttons, switches and other input/output point for control, enabling washing machines laundry process automation. Since each washing, drainage, dehydrated from PLC internal timer control, so as long as the parameters change timer can change time. On the use of PLC with analog input and output channel, PID algorithm, for temperature signal acquisition and control, achieve the expected results.Keywords:S7-200PLC washing machine timing Self-service coin目 录摘 要..............................................................................................................................IABSTRACT..................................................................................................................II第一章 绪论....................
