四川理工学院毕业设计（论文）基于单片机火灾报警系统设计学生：何凡学号：10021010404专业：自动化班级：2010.4指导教师：范焘何凡：基于单片机的火灾报警系统设计四川理工学院自动化与电子信息学院二O一四年六月四川理工学院本科毕业设计（论文）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；ISD1420I四川理工学院本科毕业设计（论文）ABSTRACTThispaperdesignedafirealarmbasedonsinglechipmicrocomputer,atthesametimeintegrationofvoicechipISD1420,A/Dconverter,temperaturesensorAD590andTGS202gassensors,usingmulti-sensorinformationfusiontechnology,thefiredetectorbasedondetectionandfireaphysical,chemicalphenomenathecombustiongases,smokeparticles,thetemperature,thefirethedetectedsignalistransformedintothefirealarmsignaltothefirealarmcontroller,firealarmandalarmsignal.Thisisanalarmsystemwhichhastheadvantagesofsimplestructure,convenientoperation,lowprice,intelligent,havecertainpracticalvalue.Keywords:Firealarm;AD590;ISD1420;A/Dconverter;II何凡：基于单片机的火灾报警系统设计目录摘要...............................................................IABSTRACT............................................................II第1章引言.........................................................11.1研究背景...........................................................................................................11.2设计的目的和意义............................................................................................1第2章系统设计方案..................................................32.1火灾的产生机理...................................................................................................32.2火灾报警器的类型...............................................................................................42.3技术实现的方法...................................................................................................62.3.1系统硬件结.....................................................................................................62.3.2系统软件方案.................................................................................................7第3章火灾报警系统的硬件设计........................................93.1系统芯片介绍.......................................................................................................93.1.1AD590温度传感器..........................................................................................93.1.2TGS202气体传感器......................................................................................103.1.3ISD420语音芯片...........................................................................................113.1.480C51芯片....................................................................................................133.1.5A/D转换芯片................................................................................................153.1.6数码显示电路...............................................................................................173.2单片机外围接口电......................................
