STC89C52单片机的液位检测系统设计+电路图.docVIP

STC89C52单片机的液位检测系统设计+电路图 摘要:液体的液位测量在工业生产中非常普遍，应用领域也较为广泛。液位测量的方法根据液位传感器的不同有很多种。随着新型电子技术、微电子技术和微型计算机的飞速发展，单片微型计算机以其信号采集处理精度高、速度快、性能稳定可靠、设置操作方便、造价低等诸多特点而被广泛的应用到液位检测和控制系统中来。本文基于单片微型计算机和超声波测距工作原理，设计出一种以STC89C52单片微型计算机芯片作为主控元件的超声波液位检测系统。该系统具有结构简单，较好的稳定性，操作方便且易于维护等优点。它可以对液位传感器采集的液位信号进行处理并驱动显示、报警和液位控制模块，实现了在封闭环境中对液位的实时检测和自动控制。7394 关键词: 液位检测；单片微型计算机；液位传感器；超声波 Liquid Level Detection Based on 51 Core MCU Abstract: Liquid level detection of liquid is very common in industrial production, and its application field is also extensive. There are many kinds of level measurement methods according to different liquid level sensor. With the rapid development of new electronic technology, microelectronics technology and miniature computers, single chip control system has been widely applied to the liquid level detection and control system because of its many characteristic including high Signal acquisition and processing accuracy, fast speed, reliable performance, convenient operation and low cost and so on. Based on single-chip microcontroller and ultrasonic ranging operational principles, STC89C52 SCM-based ultrasonic liquid level measuring system was designed. The advantages of the system lie in its simple structure, a good stability, convenient operation and easy maintenance and so on. It can deal with liquid level signals which are collected by liquid level sensor and drive display, alarm, liquid level control modules, making liquid level detection and automatic control in a closed environment come true. 4.3.3 显示子程序26 4.4 软件设计总结27 5 调试28 5.1 软、硬件调试28 5.1.1 软件调试28 5.1.2 硬件调试29 5.2 软件电路和硬件电路出现的问题及解决方法30 5.2.1 软件电路出现的问题及解决方法30 5.2.2 硬件电路出现的问题及解决方法30 5.3 调试总结30 6 结论31 致谢32 参考文献33 附录34 1 绪论 1.1 课题研究背景和目的 在现代化的工业生产中，液位测量几乎遍及生产的各个环节。人们在日常生活以及工业生产经常遇到涉及到液位的检测问题，例如饮料、食品加工，居民生活用水的供应、溶液过滤、污水处理和化工生产等多种行业的生产过程中，通常要对液位进行检测。生产生活中所用液体的液位需要保持一个合适的高度，太满会容易溢出从而造成浪费，过少则无法满足生产需求。因此，需要设计合适的检测仪器来自动监测液位高度，以便及时作出调整，使得液位保持在正常水平，以便保证产品的质量和生产效益。这些具有不同背景的实际应用问题都可以简化为对盛装于某容器中的液位进行检测的问题。因此液位成为工业控制过程中一个重