plc毕业设计：基于PLC控制的全自动洗衣机控制系统.doc

基于PLC控制的全自动洗衣机控制系统 摘要 可编程程序控制器功能强大，可靠性高，应用面广，使用方便，在现在自动控制领域应用极其广泛。现在的全自动化洗衣机只要选择好水位，打开水龙头，放入衣服，洗涤剂，接通操作开关，后面的全是洗衣机自动完成。因此，完全可以用可编程序控制器智能化控制。在全自动洗衣机中，洗衣机洗涤，脱水程序是由以单片机为中心控制系统工作的。首先由于单片机的指令系统相对复杂，编写洗涤，脱水程序相对复杂。其次，在设计控制系统硬件时，要有多种电路保护装置，这样增加了硬件的复杂性，隐含了较高的故障率，无形的增加了维护成本费用。在工业控制系统中广泛运用的PLC能克服单片机的缺点，他是整体模块，集中了驱动电路，检测电路和保护电路以及通讯联网功能。因此在运用中，硬件也相对简单，提高控制系统的可靠性，另外它的编程语言也相对简单。根据全自动洗衣机的工作原理，利用可编程控制器PLC控制的原理、特点及其控制洗衣机的特点。 关键词：全自动，PLC控制，智能化 Abstract Programmable process controller, a powerful, high reliability and wide application, easy to use, in the now very wide application of automatic control.Now fully automated washing machine a good choice as long as the water level, turn on the tap, put clothes, detergent, turn operation switch, behind the washing machine are all done automatically. Therefore, the PLC can use intelligent control. In the fully automatic washing machine, washing machine washing, dewatering program is centered by a single chip control system to work. Firstly, the MCU instruction set is relatively complex, the preparation of washing, dehydration process is relatively complicated. Second, in the design of control systems hardware, to how the circuit protection device, which increases the hardware complexity, implied a higher rate of applause, invisible increased maintenance costs. In the industrial control system PLC is widely used to overcome the shortcomings of single chip, he is the whole module, focused on the driver circuit, detection circuit and protection circuits, and communications networking. Therefore, in the use of hardware is relatively simple, improve the control system by high resistance, while it is relatively simple programming language.?According to the working principle of automatic washing machines, programmable controllers PLC control principles, characteristics and control of washing machine features. Keywords: automatic, PLC control, intelligent 引 言 随着生活水平的日益提高，人们已经不在满足半自动洗衣机的 洗涤方式，改为全自动洗衣机。全自动洗衣机从结构上分有波轮式，搅拌式，滚筒式，目前，国内市场上销售的大都是波轮式和搅拌式。