毕业论文：0.4KV MCC系统智能测控保护单元驱动板的设计.doc

2010届测控技术与仪器专业毕业设计（论文） PAGE  PAGE 2 0.4KV MCC系统智能测控保护单元驱动板的设计 摘 要 在工矿企业中，为保证MCC系统生产过程的连续运行的可靠性，作为其重要组成部分的底层测控单元需要配置强大的保护、测量、远动等功能。开发智能MCC系统保护单元对实现其功能发挥着举足轻重的作用。本文首先对智能MCC系统保护单元进行了需求分析，建立了控制系统各因素之间的逻辑关系模型，设计了系统总体框图；其次，对智能MCC系统相关的理论知识进行了深入研究，掌握了异步电机运行的原理，合理选取了电气所需的接触器、无触点开关、熔断器等元器件；最后，基于MCC系统智能测控保护单元功能所需，从人机界面友好、功能完备、使用方便等原则出发，采用AutoCAD和DXP 2004开发工具，设计了0.4KV MCC系统智能测控保护单元驱动板。系统硬件电路完成信号的拾取、处??分析及显示，将传感器测量得到的数据送入控制中心处理，并将处理得到的最终数据通过LCD显示。经对所设计的智能测控系统保护单元驱动板进行多方面考核，进行了相关的实验，证明本设计具有一定的参考价值。 关键词：马达控制中心，智能控制，保护驱动，单片机 2010届测控技术与仪器专业毕业设计（论文） 0.4KV Intelligent MCC MeasurementControl System Protective Unit-Driver Board ABSTRACT In the industrial and mining enterprises, in the production process, to ensure continuous MCC system reliability, as an important part of the bottom control unit need to configure a strong protection, measurement, remote functions.Development of intelligent MCC measurementcontrol system protective unit played a decisive role to achieve its function. To begin with, this paper analyzed the needs of intelligent MCC system protective unit, established a control system model of the logical relationship between factors, designed a block diagram for the system. Secondly, learned the relevant theoretical knowledge in-depth with the intelligent MCC system, mastered the principle of induction motor operation, selected the electrical components reasonably such as contact, non-contact switch, fuse, etc. Finally, based on functional requirements of intelligent MCC measurementcontrol system protective unit, from the principles of friendly man-machine interface, full-featured, easy to use, used development tools like AutoCAD and DXP 2004, designed this intelligent MCC measurementcontrol system protective unit-driver board.The hardware circuit completed the task that pick up, processing, analysis and display all the signal, the monitoring data is sent into the control center. Finally, processed data is obtained through LCD display. After various assessment on th