第一章 绪论 ......................................................................................................................1
1.1 病床呼叫系统的概念.............................................................................................1
1.2 呼叫系统的存在价值.............................................................................................1
1.3 呼叫系统的现状.....................................................................................................1
1.4 病床紧急呼叫系统的特点.....................................................................................1
第二章 设计任务及要求..................................................................................................3
2.1 设计任务.................................................................................................................3
2.2 设计要求.................................................................................................................3
2.3 PLC 的选型..............................................................................................................4
2.4 警报灯的选择.........................................................................................................4
第三章 系统总体方案设计..............................................................................................6
3.1 PLC 简介及工作原理..............................................................................................6
3.2 设计方案说明....................................................................................................... 11
3.3 病床呼叫系统的组成及工作方式.......................................................................12
3.4 I/O 分配表............................................................................................................13
3.5 系统接线图设计 ...................................................................................................15
第四章 控制系统的设计................................................................................................16
4.1 控制程序流程图设计...........................................................................................16
4.2 病床呼叫系统时序图...........................................................................................17
4.3 程序设计（如图）...............................................................................................18
4.4 创新设计内容.......................................................................................................24
第五章 程序调试和仿真................................................................................................25
5.1 调试.......................................................................................................................25
5.2 仿真.......................................................................................................................25
第六章 结论与体会........................................................................................................29
致谢 ..................................................................................................................................30
