液位控制系统

内容摘要：本系统以AT89C51单片机为核心设计一款简易液位控制系统。该系统主要适用于容器内液位高低的检测，由控制系统、显示系统、报警和电机系统组成。系统具有简单清晰的操作界面，能够显示液位高低，可进行液位预设，到达预定液位后自动关闭电机并时报警功能。系统以硬件软件化为指导思想，充分发挥单片机功能，大部分功能通过软件编程来实现，电路简单明了，系统稳定性高，同时该系统还具有功耗小、成本低的特点，具有很强的实用性。由于该系统所用元器件较少，单片机所被占用的I/O口不多，因此系统具有较强的可扩展性。软件程序均采用C语言编写，便于移植与升级。报告详细介绍了整个系统的硬件组成结构、工作原理和系统的软件程序设计。

关键词：液位控制；AT89C51；单片机

Title of design

Abstract：The system uses AT89C51 microcontroller as the core to design a simple liquid level control system. The system is mainly applicable to the detection of liquid level in a container. It is composed of a control system, a display system, an alarm system and an electric motor system. The system has a simple and clear operation interface, can display the level of liquid level, can preset the liquid level, and automatically turn off the motor when the liquid level is reached, and then alarm function. The system hardware and software into guiding ideology, give full play to microcontroller functions most functions through software programming to implement, simple circuit, high stability of the system, and this system also has the characteristics of low power consumption, low cost, very practical. As the system uses fewer components, the microcontroller is occupied by the I/O port is not much, so the system has a strong scalability. Software programs are written in C language, easy to transplant and upgrade. The report details the hardware structure, working principle and software program design of the whole system.

Keywords：Liquid level control; AT89C51; SCM