病床呼叫器的plc控制.doc

中 州 大 学 工 程 技 术 学 院 可编程控制器课程设计 设计题目： 病床呼叫器的PLC控制 专 业： 应用电子 班 级： 应用电子一班 姓 名： 许明艳 学 号： 201225110125 指导教师： 甄敬然 PAGE PAGE 2 目录 目录··························································1 摘要··························································2 第一章 设计任务及要求······································3 1.1任务描述···················································3 1.2任务要求···················································4 第二章 PLC的特点及应用····································4 2.1 PLC的工作原理·············································5 2.2 功能特点···················································5 2.3 可编程逻辑控制器的类型····································5 2.4 通信网络形式·············································6 2.5 PLC的应用特点···········································6 2.6 采用PLC控制的优点········································6 第三章 病房呼叫系统设计········································6 3.1 病房呼叫器示意图··········································7 3.2 病房呼叫器的流程设计······································8 3.3 I/O分配表··················································9 3.4 I/O接线图················································10 3.5 梯形图的程序设计12 3.6 实现结果22 3.7 系统说明22 总结··························································23 参考资料24 摘要 随着科技的发展，智能化的医院建设的将目前国内外先进的计算机技术、通信技术、网络技术、信息技术、自动化控制技术、办公自动化技术等运用在医院中。而目前国内外的呼叫器系统都选用无线网络，受到地域的限制和环境的限制。信号接收不是很好，这样有可能病人会呼叫不到医生，造成病人病情的恶化。 本文设计是病床呼叫系统，主要用于病房的病人有紧急情况时呼叫护士站寻求帮助，护士根据站内指示灯及响铃获取求助信息的来源，并能及时的给其提供帮助。护士在站内发现信号时及时将站内灯及响铃复位。在文中采用的PLC可编程控制器构成的病床呼叫系统结构更简单，更易于管理，可编程控制器病床呼叫系统可以及时，准确的实现病房呼叫管理，具有良好的应用前景。 PLC作为新型控制元件，在生产，生活，医疗，军事等领域都有了较大的使用。而在文中设计病床呼叫器，有利于对医院的发展和方便病人 ，使得医院医疗更人性化，提高医院工作效率。而对此系统更有良好的前景。 Along with the development of science and technology, intelligent hospital construction at home and abroad advanced computer technology, network technology, communication technology, information tec