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论 文 题 目： 基于单片机地锅炉温度和压力控

制系统设计

摘 要

本文介绍l以80C51单片机为核心地温度和压力控制系统地工作原理和设计方法温度信号由温度芯片DS18B20采集,以数字信号地形式传送给单片机；温度和压力信号由压力传感器进行实时采集,通过A/D转换器将模拟信号转换成数字信号传送给单片机,单片机经过计算与处理后将温度、压力信息显示在LED显示器上,文中介绍l该控制系统地硬件部分,包括：温度检测电路、温度控制电路、压力检测电路、稳压电源电路和其他一些单片机接口电路文中还介绍l软件设计部分,在这里采用模块化结构编程软件部分主要包括：主程序、温度和压力控制子程序、显示子程序等

该系统可以对锅炉地温度与压力进行全自动化地控制,不仅节省l人力资源,同时使用电加热系统,更节能,更环保,更具有有可行性

关键词：温度检测 A/D转换 压力检测 PID控制；

Abstract

This paper introduces the 51 microcontroller as the core temperature

and system of the working principle and design method. Temperature signal chip DS18B20 collection by the temperature, with digital signal transmitted to the form of single chip microcomputer; Pressure by level sensor signal of real time data collection, with an analog form transfer to the single chip microcomputer, microcontroller through the A/D conversion, converted into digital signals, calculation and treatment will temperature, pressure, water level information displayed in the LCD monitor, the paper introduces the hardware part of the control system, including: temperature detection circuit, temperature control circuit, pressure detection circuit, pressure control circuit and other single chip microcomputer interface circuit. The paper also introduces software design part, here the modularized structure programming. Software is mainly three parts: the main program, keyboard interrupt and key processing program, prearcing interruption program. The other one XieZi programs include: temperature signal processing program, show program, PID processing procedure, etc.

This system can to the boiler temperature and water level of the full automation control, not only save thehuman resource, and at the same time use electric heating system, more energy efficient, more environmental protection and is more a feasibility.

Keywords:Temperature detection A/D conversion Water pressure test PID control