"PLC在自动售货机控制系统中的应用"

随着社会进步和机械化程度的不断提高，自动化控制已广泛应用于人们的生活中，给人们带来了很多便利。本论文通过利用PLC自动控制的功能完备、灵活性、通用性好，程序输入方法简单等优点，设计了一种PLC自动控制售货机。自动售货机作为一种高智能化的产品，操作简便，可以弥补人力资源不足的问题。这种自动售货机外形小巧，可以安装在不同的区域，给人们的生活带来了很大的便利。 本论文详细介绍了自动售货机的结构组成，包括投币控制按钮、选择饮料按钮、退币按钮、输出饮料端口、找钱端口和一些指示灯。为了满足设计需求和经济综合因素的考虑，在设计中选择了FX2N-32R型PLC进行控制，这样能够满足输入和输出的控制需求。论文给出了控制系统的软硬件设计，并使用GX7CH软件对梯形图进行输入、调试和仿真，能够完全符合设计需求。 关键词：自动售货机，可编程控制器，梯形图 Abstract: With the continuous progress of society and the rapid development of mechanization, automation control has been widely used in people's lives, bringing convenience to people. This paper uses PLC automatic control with the advantages of complete functions, flexibility, good universality, simplified program input method, and simple operation to design a PLC automatic control vending machine. The vending machine is a highly intelligent product with simple operation, which can fully supplement the shortage of manpower resources. This kind of vending machine has a small size and can be placed in a wide range of areas, bringing great convenience to people's lives. This paper introduces the structure composition of the vending machine in detail, including coin control buttons, beverage selection buttons, refund buttons, beverage output ports, change ports, and some corresponding indicator lights. In order to meet the design requirements and consider the economic comprehensive factors, the FX2N-32R PLC control is selected, which can meet the input and output control requirements. The paper provides the software and hardware design of the control system, and uses the GX7CH software for input, debugging, and simulation of ladder diagrams, which can fully meet the design requirements. Keywords: vending machine, programmable logic controller, ladder diagram