单片机火警报警系统毕业设计.docx

随着人们生活水平的提高和安全防范意识的增强，急需开发面向普通居民、价格低廉、运行 可靠的自动报警系统。鉴于住宅电话和移动通讯设备已相当普及，因此利用公共通讯网作为报警 系统的传输媒体是最佳的选择。本文介绍了一种基于公用屯话网，利用单片机8051、DTMF信号收 发芯片MT8880＞集成语音芯片ISD1420,集成温度传感器AD590和气体传感器TGS202等,利用多 传感器信息融合技术，完成语音报警的实用、可靠的单片机语音自动报警系统，着重阐述了该系统 的组成形式及工作原理。基于该系统原理的相关产品已在线使用。实践表明，单片机技术在系统 报警和其它一些自动控制领域中有着广泛的应用前景。 本文设计了 一个简单，适用的单片机火警报警系统，该系统能自动完成对布测点检测，确 认火警后能自动报警，并显示火情点，记录火灾发生时间。 关键词：单片机；传感器；数据处理；报警 Abstract Along with people living standard enhancement and safe guard consciousness enhanceme nt, urge ntly needed developme nt face ordin arily reside nt, low in price, moveme nt reliable auto alarm system .In view of the fact that the residence telephone and the two?way charges for cellular phones equipment quite popularized, therefore uses the public communications net to take alarm systems transmission medium is the best choice. This article in troduced one kind based on the public teleph one n etwork, using monolithic in tegrated circuit 8051, DTMF signal receivi ng and dispatchi ng chip MT8880, integration speech chip ISD1420, integration temperature sensor AD590 and gas sensor TGS202 and so on, uses the multi-sensor in formati on fusi on tech no logy, completes the pronunciation warning practical, the reliable monolithic integrated circuit pronunciation auto alarm system, elaborated this systems composition form and the principle of work emphatically. Based on this system principle related product already online use. The practice in dicated that the mono lithic in tegrated circuit technology has the widespread application prospect in the system warning and other automatic control domain. This article has designed a simplicity, the suitable monolithic integrated circuit fire-alarm alarm system, this system can complete automatically to the cloth measuring point exami nation, con firmed after the fire-alarm, can the auto-alarm, and demonstrates the state spot, the record fire has the time. Key words： Monolithic integrated circuit; Sensor; Data processing; Warning TOC \o 1-5 \h \z