毕业论文：教室电铃的PLC自动控制.doc

摘?要 本文介绍一种用三菱PLC控制学校的作息时间控制系统，详细地阐述了系统组成、系统硬件接线和系统软件设计，并详细介绍了系统工作原理。该系统具有外设电路配置简单、扩展方便、操作容易、可靠性高、实用性强等特点，集电铃、路灯、宿舍楼道照明灯、教室楼道照明灯、广播、宿舍大门开启关闭、宿舍网络连接断开，实现了作息时间无人控制的自动化、科学化管理与操作。 关键词：作息时间控制 PLC I/O接线 软件设计 Abstract This article introduced that one kind the daily schedule controlsystem which controls with PLC, elaborated in detail the systemcomposition, the system hardware wiring and the system softwaredesign, and introduced the system principle of work in detail. Thissystem has the peripheral device electric circuit disposition to besimple, the expansion is convenient, the operation is easy, thereliability is high, usability strong and so on characteristics,collection electric bell, street light, dormitory lamp, classroomlamp, music broadcast automatic control in a body, , has realized the daily schedulenobody control automation, the scientific management and theoperation. ? key word：Daily schedule control; PLC; I/Owiring; Software design 目 录 摘要……………………………………………………………………………………………………….……..I Abstract…………………………………………………………………………………..………………..….II 目录………………………………………………………………………………………………………….….III 引言…………………………………………………… …………………….……………...….1 一、PLC的应用领域、发展方向及未来展望…………………………………………………… ……2 1.1 PLC的应用领域…………………………………………………………………………2 1.2可编程控制器的发展方向…………………………………………...............1.3 PLC未来展望…………………………………………………………….. …………...…...3 二、作息时间控制系统的方案论证………………………………………..................................4 2.1 方案论证…………………………………………………………………………………..4 2.2 控制要求…………………………………………………………………………………..5 三、作息时间PLC控制系统程序设计…………………………………………………….….....6 3.1输入输出点分配……………………………………………………………………….…..6 3.2作息时间控制器连接图……………………………………………………………….…..7 3.3作息时间控制系统的程序设计…………………………………………………….……..7 四、作息时间PLC控制系统硬件设计………………………………………………………….12 4.1硬件设计图…………………………………………………………………………...…..12 4.2硬件焊接注意………………………………………………………………………….....12 4.3焊接操作步骤………………………………………………………………………….....13 4.4实物图………………………………………………………………………………...…..13 五、测试………………………………………………………………………………………….15 六、总结……………………………………………………………………………