单片机液位检测及显示电路设计毕业设计论文.docVIP

单片机液位检测及显示电路设计-毕业设计论文 毕业设计（论文）题 目 单片机液位检测及 显示电路设计 专 业 电气工程及其自动化 班 级 学 生 指导教师 2012 年单片机液位检测及显示电路设计专业：电气工程及其自动化班级：电气班作者：指导教师： 职称：副教授答辩日期：2012-06-18摘 要随着社会的进步，生产工艺和生产技术的发展，人们对液位检测提出了更高的要求。由于新型电子技术、微电子技术和微型计算机被广泛的应用，单片机控制系统以其控制精度高，性能稳定可靠，设置操作方便，造价低等诸多特点，被应用到液位系统的控制中来。本文介绍了以LM型液位传感器，A/D转换芯片ADC0809，以及AT89C51单片机作为主控元件的液位检测系统的设计方法。本文分别从液位检测，A/D转换，数码管显示，超限报警等几个方面对硬件电路进行了比较详细的介绍，然后对A/D转换程序，数码管显示程序，超限报警程序等做了比较详细的阐述，并用流程图做进一步的解释。通过软件和硬件的联合调试，实现了在一定范围内对液位的调节，动态显示出液位结果，实现报警，完全实现了任务书上的要求。关键词：液位检测、A/D转换、LM型液位传感器、超限报警AbstractAs society advances, the development of production processes and production technologies,the detection of the level control system have a higher demand. New electronic technology of microelectronics technology and miniature computers is widely used. Single chip control system to set up operations with high control accuracy, reliable performance, convenient,low cost, is applied to the level contral.This article describes the LM-type liquid level sensor and A / D conversion chip ADC0809, and AT89C51 microcontroller as the main control component of the liquid level detection system design methods. This article respectively from the liquid level detection, A/D converter, Digital display, Limit alarm and several aspects of the hardware circuit have conduct a more detailed description. Then the A/D conversion process, Digital tube display program, Limit alarm procedures have a fairly detailed, and using a flow chart for further explanation.Through joint debugging of software and hardware, The basic realization of the regulation on the level within a certain range of liquid level regulation, Dynamically shows the level results, Achieve alarm, Entirely Achieve the requirements of the mission statement.Keywords: the liquid level detection, A/D converter, lm-type liquid level sensor, limit alarm目 录第1章 绪论………………………………………………………………11.1 液位检测系统的