基于单片机的水位控制.doc

毕 业 设 计 [论 文] 题 目： 智能水位控制器的设计 学 院： 电气与信息工程学院 专 业： 电气工程及其自动化 姓 名： 学 号： 指导老师： 完成时间： 2013-5-20  摘 要 水资源紧缺已经引起全社会的关注。如何节约用水、有计划地用水已成为电子工作者设计供水系统时必须考虑的问题。自动化控制供水不失为一种行之有效的方法。以往的水位控制多采用老式的浮球装置，会有很大的误差和弊端。而智能水位控制器是近年来开发的一项新技术，它是传感器、硬件、软件等几项技术紧密结合的产物，它的作用是观测和控制容器内的介质多少量，通过液面的高度来掌握体积的多少，从而达到防止超量或空装一级可以掌握存液数量的目的，可用于很多地方进行工业及民用生活控制。该方法采用单片机来对传感器的信号进行处理，输出控制信号，配合外部硬件电路，用晶体管驱动直流继电器，再控制交流接触器来完成对水泵开启、关闭，设计可以根据缺水多少的不同情况智能化地启动不同数量的水泵，即缺水少时少量水泵工作，缺水多时多台水泵同时工作，及时补充水量。这样就可以智能化的自动控制水位的高低，这在生活中将大大节省了人力、物力，是有其开发价值的。 关键词：单片机传感器晶体管直流继电器 Abstract The shortage of water resources has caused the concern of the whole society. How to save water, there are plans to water has become a must be considered in design of water supply system of electronic workers problems. Automatic control of water supply is a kind of effective method. Water level control usually adopts a floating ball device old-fashioned, there will be errors and defects of great. Intelligent water level controller is a new technology developed in recent years, it is the combination of sensor, hardware, software and other technology closely, it is the role of observation and control of the medium in the vessel volume, grasps the volume through the height of the liquid level, so as to prevent excessive or empty loading level can master the liquid storage quantity, can be used for many places for industrial and civil life control.The method adopts the singlechip to signal of the sensor for processing, output control signal, with the external hardware circuit, DC relay drive transistor, to control AC contactor to the completion of the pump opening and closing, design can according to the different situation of the intelligent water how to start a different number of water pump, the less water when a small amount of water pump for a long time, water pumps to work at the same time