油管静水压试管装置自动控制系统论文2稿Word文档格式.docx

1、学 院 电子信息工程学院 专 业 电气工程及其自动化 年级班别 09级（3）班 学 号 2009401020318 学生姓名 刘 凡 指导教师 孙歆钰（讲师） 2013年 5月 23日目录摘要.2Abstract.31.选题背景.42.方案论证.5 2.1.试压原理.5 2.2控制系统硬件规划方案.6 2.2.1选择压力传感器.7 2.2.2选择A/D转换器.8 2.2.3选择单片机.9 2.2.4选择外部扩展数据存储器.12 2.2.5扩展 I/O端口.13 2.2.6选择键盘/显示器接口芯片.13 2.2.7选择7段LED数码显示器.15 2.2.8 选择打印机.16 2.2.9 选择光电

2、耦合器.163.过程论述.,17 3.1绘制电路原理图.17 3.1.1调理电路.17 3.1.2 A/D转换器引脚的连接.18 3.1.3 单片机AT89C52端口的分配.18 3.1.4 外部数据存储器MK48S80X15.18 3.1.5 扩展I/O端口.18 3.1.6 Intel8279可编程键显接口芯片的连接.19 3.1.7 编写控制程序.21 3.1.8 PCB版图制作.234.毕业设计总结.25参考文献.26致谢.27附录 .28摘要 随着国民经济的飞速发展,钢管被广泛应用于石油化工,锅炉制造等行业, , 它们的普遍特点是常用于高温、高压等恶劣工况下,因此对钢管的质量提出了更

3、高的要求。尤其在油田采油、输油过程中，油管埋于地下，承受高温、高压、强腐蚀，一旦出现裂痕或爆裂，将会影响生产，造成重大经济损失。因此，油管在使用前必须进行静水压试验。静水压试验过程中试压压力高达近100MPa,且油管两端分别加压，很容易产生压力不平衡的状况，过大的压力差会损坏动密封头和其他试验设备，因此需要一套自动控制系统。本文所介绍的静水压试验机控制系统正是为检验钢管的耐压能力而设 计制造的.它是一个多方面为一体的复杂系统,是集机械,电气,液压,传感和自动控制为一体的复杂的机电液一体化设备。 本文所研究的是静水压试管装置的单片机控制关键词:静水压试管装置控制系统;单片机控制Abstract

4、With the rapid development of the national economy,steel pipes are widely used in petrochemical, boiler manufacturing industry, their general characteristics is commonly used in high temperature, high pressure and other adverse conditions, so the quality of steel has put forward higher requirements.

5、Tubing is greatly needed in the processing of the oil recovery and the oil transportation .Because there is high pressure ,high temperature and strong corrosion under the ground ,if the tubing cracks ,it will be serious trouble to maintain.And it maybe brings great damage .So the hydrostatic pressur

6、e testing for tubing is necessary.According to the problem ,a set of the hydrostatic pressure testing equipment for tubing is developed. In the hydrostatic pressure testing, the pressure is nearly 100MPa, and also the pressures are put separately in the two end of the tubing ; it will bring the pres

7、sure error. Too big error will damage the Dynamic Seal and other equipment, so the hydraulic pressure balance system is greatly needed. Described in this article hydrostatic testing machine control system for the test tube is the ability to design and manufacture of pressure of. It is a multifaceted complex system as a whole, is a mechanical, electrical, hydraulic, sensor integration and automation for complex mechanical, electrical and hydraulic equipment integration. In this paper, The design, primarily responsible for part of SCM control