毕业设计---基于单片机控制的高楼恒压供水系统

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1、 I 摘摘 要要 随着我国国民经济的快速发展和城市化进程的加快，工农业生产和生 活用水量急剧增加，水资源的节约和合理利用显的极为重要。高楼供水技 术的发展对于水资源的节约和电能的合理利用有着极其重要的意义。 本文介绍了一种基于单片机控制的高楼恒压供水系统。系统以单片机 为核心，通过对变频器和交流接触器的控制，实现高楼全自动恒压供水。 文中对系统的工作原理进行了阐述，并对算法进行了设计。 系统根据用水量的多少由单片机控制投运水泵数目,变频调节水泵电 机转速,保证供水水压的恒定,从而可以有效地防止管网出现超压而引起设 备损坏；变频调速使水泵电机可以实现循环软启动,避免了频繁启动时,启 动电流对供电

2、系统、配电设备的冲击,延长了电气设备、水泵及管网的使用 寿命。这种由单片机来实现的变频调速恒压供水电路,不但使水压恒定,节 电节水,系统维修工作量小；而且占地面积小,成本低, 投资省,操作方便, 运行可靠，非常适合于高层建筑和生活小区供水。 关键词： 单片机 变频器 恒压供水 II THE DESIGN OF SYSTEM CONTROLLED BY SINGLE-CHIP COMPUTER FOR HIGH BUILDING WATER SUPPLY ABSTRACTABSTRACT With the rapid development of national economy and the

3、 acceleratio n of urbanization, industrial and domestic consumption, irrigation require ments in our country have increased enormously. So the saving and reas onable using of water is becoming very important. The development of hydrotechny plays an important role in that. In this paper, I design a h

4、ydrotechny system based on single chip Microcomputer. In order to supply water to high buildings with constant pressure, the whole system, which consist of Micromaster and pressure sensor, is automatically controlled by a single chip Microcomputer. We f ormulate both the systems requirements and str

5、ucture and the theory an d characteristics of constant pressure water supply. The system measure water needed and put into operation by the sin gle-chip microcomputer to control the number of pumps .The electric mo tor was controlled through Micromaster and AC contactor ,which ensure constant water

6、pressure and can effectively prevent the emergence of pip eline equipment caused by overpressure damage. The variable frequence t echnique achieve circular soft start and avoid the wallop of power suppl y system caused by starting current.The useful time of the electric instal lation , pipeline and water pumps .This circuit is not only keeping a co nstant water pressure and a small maintenance workload ,but also a little maintenance workload .Besides ,it need less floor area and costs ,so i