单片机的锅炉液位控制系统.docVIP

摘 要 本文主要设计了一种锅炉液位控制，它作为控制器，通过单片机，压力传感器和模数转换器等硬件系统和软件设计方法实现具有液位检测报警和控制双重功能本系统在设计中主要有水位检测、温度检测、压力检测、按键控制、水位控制、显示部分、故障报警等几部分组成来实现控制。主要用位传感器检测位，用温度传感器来检测水温，用个控制按键来实现按健控制，用三位7段LED显示器来完成显示部分，用来控制泵的，用压力传感器检测锅炉内部压力并且通过模数转换把这些信号送入单片机中。把这些信号与单片机中内部设定的值相比，以判断单片机是否需要进行相应的操作，即是否需要开启水泵，来实现对液的控制,从而实现单片机自动控制液的目的。本设计用单片机控制易于实现锅炉液位、温度和压力的控制,而且有造价低、程序易于调试、一部分出现故障不会影响其他部分的工作、维修方便等优点。ABSTRACT Designed in this paper is a boiler liquid level controll system, which STC89C52 as a controller, through hardware and software design ,such as STC89C52 single chip, temperature sensor,pressure sensor and ADC, a system of digital display, reach to liquid level detection and alarm dual function control.  The design of the system are mainly include the water level detection, temperature detection, pressure detection, key control, water level control, display, fault alarm, such as a few parts to achieve the level control. Detection of the main level with the water level sensors, temperature sensors DS18B20 is used to detected water temperature, with three control buttons to achieve the health control, with three 7 LED display to complete the display, using MOC3041 TRIAC to control the circulating pump switch ,with pressure sensors detect the internal pressure of the boiler. Through analog-to-digital conversion take these signals into the single chip. These single-chip signal and the internal set of values compared to determine the need for the corresponding single-chip operation, namely, the need to open the pump to achieve the level of control, thus in order to achieve the purpose of automatic control by single-chip solution. The design is easy to implement single-chip boiler liquid level control, temperature and pressure control, and its low cost and easy to debug the procedure, part of the failure will not affect other parts of the work, maintenance convenience, and so on. KEY WORDS:stc89c52 Single chip microcomputer, level control,display,alarm 目录 第一章 绪论 1 1.1锅