自动售货机全文(机械cad图纸)学士学位论文.doc
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2023-06-29
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本科机械毕业设计论文 CAD 图纸 QQ 401339828
I
目 录
1 引言.............................................................................................................................1
2 PLC 的结构与特点.....................................................................................................1
2.1 PLC 的基本结构 .....................................................................................................1
2.2 PLC 的特点 .............................................................................................................1
2.3 PLC 的应用领域 .....................................................................................................2
3 自动售货机的硬件设计............................................................................................2
3.1 控制要求.................................................................................................................2
3.2 光传感器.................................................................................................................3
3.3 数码管显示.............................................................................................................4
3.4 金属硬币的识别原理.............................................................................................5
3.5 硬币的贮存和退币.................................................................................................5
4 自动售货机的软件设计.............................................................................................5
4.1 设计思路 ................................................................................................................5
4.2 总体流程图 ............................................................................................................5
4.3 I/O 口分配..............................................................................................................6
4.4 控制接线图 ............................................................................................................7
4.5 程序开发 ................................................................................................................7
4.5.1 计币系统
............................................................................................................8
4.5.2 比较系统
............................................................................................................8
4.5.3 选择和饮料供应系统
........................................................................................8
4.5.4 退币系统
............................................................................................................9
4.5.5 钱显示和制冷
..................................................................................................10
5 调试..........................................................................................................................10
5.1 系统的连接...........................................................................................................10
5.2 PLC 程序调试......................................................................................................10
6 结论...........................................................................................................................11
参考文献......................................................................................................................11
附录..............................................................................................................................12
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