多传感器火灾报警器毕业论文.doc

摘要 据相关统计，随着家用电器的普及，家庭用电量正呈逐年上升的趋势，家庭火灾发生的频率也越来越高，火灾报警器也随之被广泛应用于各种场合。运用多传感器结合单片机能够有效解决灵敏度与报警准确率之间的矛盾，能够达到预期的效果。本设计具有高可靠性低误报率等特点，有一定的实用价值本文首先介绍了火灾影响并介绍了火灾报警系统的发展情况；然后，介绍了一种多传感器火灾报警系统的设计；之后详细讲解了系统的各功能模块硬件及软件设计，软件设计包括针对单片机和传感器的数据采集、系统检测与报警程序的设计；之后对硬件进行了简单的调试，对调试结果进行了一些分析；最后，对整个设计进行了概括性总结。关键词：火灾报警；多传感器；模糊判断 Abstract According to relevant statistics, as household appliances popularization, electricity use is increasing year by year, family fire occurrence frequency family more and more is also high, fire alarm is subsequently been widely applied in all kinds of situations. By using microcontroller can effectively solve the sensor with sensitivity and alarm accuracy, the conflict between can achieve the desired effect. This design has high reliability characteristics such as low misstatement rate, there is certain practical value. This paper discusses the meaning of the topic selection, design ideas, the component selection, system hardware and software debugging. First, it introduces that the fire bring us the impact of daily life and introduces the development of the fire alarm system; Then, this paper introduces a kind of multisensor fire alarm system design project; Then explains the function module system hardware and software design, Hardware including the selection of SCM and sensor, various circuit module design software design of the sensor for SCM and include data acquisition, system detection and alarm program design; After a brief for hardware debugging, to conduct some analysis debugging results; Finally, the whole design this paper summarizes preliminary. Keywords: fire alarm; multi-sensors; SCM; fuzzy judgment 目 录 摘 要 I Abstract II 1前言 1 1.1 火灾报警器的发展及现状 1 1.1.1 火灾探测技术 1 1.1.2 火灾探测器的发展趋势 1 1.2 论文研究的目的及意义 2 1.3 设计工作任务 2 2 系统方案设计 4 2.1 系统主要功能 4 2.2 系统结构与工作流程 4 2.3 小结 5 3 火灾报警系统硬件模块设计 6 3.1 单片机选型 6 3.2 模数转换电路设计 9 3.3 传感器选型 11 3.3.1 温度传感器 11 3.3.2 烟雾传感器 12 3.3.3 一氧化碳传感器 14 3.4 报警与显示电路设计 16 3.4.1 蜂鸣器报警电路 16 3.4.2 SMC1602A液晶显示模块 17 3.5 看门狗简介 19 3.6 电平转换电路设计 21 3.