基于单片机的火灾报警系统设计与仿真

基于单片机火灾报警系统设计

word文档 可自由复制编辑

摘 要

本文设计了一种以单片机为基础，同时集成了语音芯片ISD1420、A/D转换器、温度传感器AD590和气体传感器TGS202等，利用多传感器信息融合技术，火灾探测器通过对火灾发出的物理、化学现象——燃烧气体、烟雾粒子、温度的探测，将探测到的火情信号转化成火警电信号传递给火灾报警控制器，火灾报警器再发出报警信号。这是一种结构简单、使用方便、价格低廉、智能化的报警器系统，具有一定实用价值。

关键词：火灾报警器；AD590；ISD1420；A/D转换器； ISD1420

word文档 可自由复制编辑

ABSTRACT

This paper designed a fire alarm based on single chip microcomputer, at the same time integration of voice chip ISD1420, A/D converter, temperature sensor AD590 and TGS202 gas sensors, using multi-sensor information fusion technology, the fire detector based on detection and fire a physical, chemical phenomena the combustion gases, smoke particles, the temperature, the fire the detected signal is transformed into the fire alarm signal to the fire alarm controller, fire alarm and alarm signal. This is an alarm system which has the advantages of simple structure, convenient operation, low price, intelligent, have certain practical value.

Key words: Fire alarm; AD590; ISD1420; A/D converter;

word文档 可自由复制编辑

目录

摘 要 .............................................................. I ABSTRACT ........................................................... II 第1章 引 言 ........................................................ 1 1.1 研究背景 ............................................................................................................ 1 1.2

设计的目的和意义 ............................................................................................ 1

第2章 系统设计方案 ................................................. 3 2.1 火灾的产生机理 ................................................................................................. 3 2.2 火灾报警器的类型 ............................................................................................. 4 2.3 技术实现的方法 ................................................................................................. 6 2.3.1系统硬件结 ...................................................................................................... 6 2.3.2系统软件方案 .................................................................................................. 7 第3章 火灾报警系统的硬件设计 ....................................... 9 3.1 系统芯片介绍 ..................................................................................................... 9

3.1.1 AD590温度传感器 .......................................................................................... 9 3.1.2 TGS202气体传感器 ...................................................................................... 10 3.1.3 ISD420语音芯片 ........................................................................................... 11 3.1.4 80C51芯片 ..................................................................................................... 13 3.1.5 A/D转换芯片................................................................................................. 15 3.1.6数码显示电路 ................................................................................................ 17 3.2 单片机外围接口电 ........................................................................................... 17 3.2.1 晶振电路 ....................................................................................................... 17 3.2.2 复位电路 ....................................................................................................... 18 3.2.3 信号处理电路 ............................................................................................... 19 3.2.4 A/D转换电路................................................................................................. 21 3.2.5 报警电路 ....................................................................................................... 23 3.2.6 语音报警电路 ............................................................................................... 23 3.2.7 状态指示灯电路 ........................................................................................... 24 3.2.8 数码管显示电路 ........................................................................................... 24 第4章 火灾报警器的软件设计 ........................................ 26 4.1 软件开发环境 ................................................................................................... 26 4.3 主程序流程 ....................................................................................................... 26

word文档 可自由复制编辑