毕业设计（论文）-中央泵房自动控制设计（全套图纸）.doc

目录 全套完整版CAD图纸，联系153893706 1绪论·························································· 1 1.1 引言······················································ 1 1.2 课题来源·················································· 1 2泵控系统设计与分析············································ 3 2.1 系统总体概述·············································· 3 2.2 系统控制要求·············································· 3 2.3 系统总体设计方案·········································· 5 2.4 泵控系统硬件选型·········································· 9 2.5 由微机-PLC网络构成的远程检测设计·························15 3 外部设备选用·················································18 3.1 传感器的选用··············································18 3.2 阀的选用··················································32 3.3 其它外部设备选用··········································33 4 泵控系统软件设计·············································35 4.1 泵控系统TD200组态········································35 4.2 系统PLC软件设计··········································42 4.3 上位机检测软件设计········································48 5 系统接线说明·················································51 5.1 手动控制接线··············································51 5.2 PLC控制接线··············································53 结束语·························································56 致谢···························································57 参考文献·······················································58 附录A·························································59 附录B························································· 62 附录C························································· 91 附录D·························································94 附录E·························································117 第一章 绪论 1.1 引言 传统的自动控制大多为常规的继电器带动接触器控制，其控制器通常为电位器之类，是基于电气原理的纯电气自动控制，属于模拟控制方式。如一位式的模拟控制方式，这种控制方式精度低，可靠性差，除了一些精度要求不高的场合外，现阶段一般很少采用。 随着集成技术的迅猛发展，以微处理器为核心的单片机、PLC、工控机迅速渗透到工业控制的各个领域，产生了计算机自动控制。计算机自动控制的控制器是各种类型的计算机（包括单片机、工控机及PLC等），其最大的优点是控制器能够存储并辨识特殊的语言（程序），根据程序的控制思想发出各种指令，控制