基于单片机C52的温度报警系统

毕业设计(论文)中文摘要

(题目)：基于单片机C52的温度报警系统

摘要：温度是一种最基本的环境参数，人们的生活与环境温度息息相关，随着现代工农业技术的发展以及人们对于生活环境的要求的提高，也迫切需要检测和控制温度。因此对温度的测量与控制具有十分重要的意义。本文把多功能显示系统和单片机有机结合起来，并且在C语言程序的支持下，设计出实时温度显示报警电路。以AT89C52单片机为核心，由温度传感器、时间芯片、液晶、报警器等作为单片机的外围器件。它是一种多功能的数字式电路，它可显示年、月、日、小时、分钟等时间信息，同时也可以显示周围环境等温度信息。单片机通过时钟芯片DS1302获取时间数据和温度传感器DS18B20采集温度，对数据处理后送到液晶1602显示输出。电路采用LCD作为显示器，具有界面良好，功耗低等特点。软件采用C语言来编写目标系统软件，会大大的缩短开发周期，且明显地增加软件的可读性，便于改进和扩充，以研制出规模更大、性能更完备的系统。

经过软硬件结合，所设计的温度控制报警器能完成实时显示以及超温报警功能。

关键词：DS18B20 AT89C52 单片机报警器

毕业设计(论文)外文摘要

Title :The Temperature Alarm system based on Single Chip C52 Abstract: Temperature is one of the fundamental environmental parameters, our life is related to the environmental temperature. With the development of modern agriculture and industry technologies and increasing request of our living environment, the temperature detection and control are needed. So the temperature measurement and control have vital significance. In this design, the multi-functional display system and single chip microcomputer, have combined together, a real-time temperature display alarming circuit is designed with the use of C language program. This design is composed of the single chip AT89C52, temperature sensors, time chip, LCD, alarm device, etc. It is a multi-function digital circuit, it can display year, month, day, hour and minute time information, etc. Also can display environment temperature information, etc. DS1302 chip microcontroller through clock gain time data and temperature sensor DS18B20 collection of data processing temperature, LCD display output delivered after 1602. Circuit adopts LCD display, as with low consumption and good interface. Software C language is used to write the target system software in order to shorten the development cycle, and increase the readability of the software obviously, moreover, easy for improvement and expansion and develop larger and more complete system.

Through the design of hardware and software, the temperature control and alarm system can perform real-time display and over temperature alarm function.

keywords:DS18B20 AT89C52 SCM alarm

目录

目录 (3)

1 引言 (1)

背景及研究内容 (1)

方案比较与选择 (1)

2 主要元器件介绍及电路设计软件介绍 (3)

AT89C52单片机主要特性及引脚功能介绍 (3)

DS18B20温度传感器特性及引脚功能介绍 (5)

DS1302时钟芯片特性及引脚功能介绍 (6)

LCD1602芯片特性及引脚功能介绍 (8)

KEIL C51软件介绍 (9)

PROTEL 99SE简介 (10)

P ROTEUS软件的简介 (11)

3 硬件电路设计 (12)

设计思路 (12)

单元电路设计 (12)

单片机最小系统 (12)

温度传感电路 (13)

时钟控制电路 (13)

报警及显示电路 (14)

4 系统软件设计 (14)

软件设计思路 (14)

主控程序流程图 (15)

部分子程序流程框图 (15)

lcd显示子程序流程图 (15)

时间程序流程图 (17)

温度报警子程序流程图 (18)

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