PLC在地铁列车洗车自动控制系统中的应用+梯形图
关键词： 自动洗车；PLC控制；顺序动作
Automatic control system application of the subway wash Based on PLC
Abstract：Programmable logic controller referred to PLC, which is a kind of micro-processing technology, based on the control of processing rules stored in the memory, used to control the switch including the control parameters based or including control logic, electromechanical motion control, or process control and other industrial control areas of new industrial control devices. Since the PLC's reliability, versatility, programming convenience, the automatic car wash system control is simple, anti-interference ability, reliable design cycle is short, easy to modify and save a lot of intermediate relays, time relays, easy to install wiring , and when the washing machine process requirements change, generally do not need a lot of changes to the hardware control circuit can be realized simply by changing the software program, and can monitor the state of the site inspection and modification. This selection of the Siemens S7-200 models of PLC. Describes the process of the subway automatic car wash, hardware options, software selection and program design and so on.
Keywords: automatic washing machine; PLC control technology; sequence of actions
目录
1绪论 1
1.1课题背景 •• •• 1
1.2课题研究的意义 1
1.3国内外列车清洗设备及趋势 • 1
1.4国外列车清洗现状••2
1.5列车洗车发展趋势 •3
1.6 PLC的发展及应用前景 •3
1.6.1 PLC的国内外的发展 • 3
1.6.2 PLC未来的发展趋势 • 5
1.6.3 PLC的应用领域 5
1.7地铁列车清洗工艺•6
1.8本文主要工作•7
2控制系统组成结构••8
2.1地铁洗车系统主要功能••8
2.2地铁洗车自动控制系统设计• 8
2.2.1自动控制系统具体构成•• 8
2.2.2电控系统总体布局•• 9
2.2.3供水系统构成9
2.2.4地铁清洗机外部控制图• 10
3 地铁自动洗车机的硬件系统设计11
3.1 PLC的选型11
3.2限位开关工作原理及选择••13
3.3传感器的选择•• 15
3.4泵的选择•• 15
3.4.1清水泵的选择•• 15
3.4.2高压冲洗泵的选择• 15
3.5接触器的选择• 16
3.6过载保护装置• 17
3.7电磁阀的选择 18
4地铁自动洗车系统软件设计19
4.1地铁洗车工作流程 19
4.2地铁自动洗车控制系统I/O地址的分配•• 20
4.3地铁自动洗车控制系统I/O接线图••21
5地铁洗车自动控制程序设计 22
5.1 梯形图的总体结构分析•• 22
5.1.1 PLC控制系统梯形图的特点 22
5.1.2梯形图的结构分析•• 22
5.2地铁自动洗车控制系统梯形图•• 24
6总结•30
致谢 31
参考文献 32
1 绪论