基于gsm模块家庭报警系统的设计毕业设计.doc

基于GSM模块的家庭报警系统设计 摘 要 随着超大规模集成电路、通信技术、单片机技术的迅猛发展和人们安保意识的日渐增强，利用单片机及其它外围芯片实现自动报警已成为可能，且是一种发展趋势。 本单片机GSM模块，借助最可靠、最成熟的GSM移动网络，以短消息或电话形式，直接把反映到的手机屏幕上。主动式红外传感器 关键词：单片机，GSM模块, 主动式红外探测器，MQ-5燃气传感器 The Design of Home alarm system Based on GSM Modem ABSTRACT With very large scale integrated circuit, communication technology, the rapid development of microcomputer technology, and peoples security awareness increasing, using single chip computer and other peripheral chips to realize automatic alarm has become possible, and is a development trend. This design mainly completed the home alarm system based on GSM module design.Design with STC89C52 single-chip microcomputer as the core, the collocation of the GSM module, using the most reliable, most mature GSM mobile network, in the form of short message or phone, directly reflect the specific early-warning information to the users mobile phone screen.Subject adopts two sensors modules: active infrared detector module, MQ - 5 combustible gas leak detection module.Active infrared sensor module mainly consists of a pair of infrared diode, a launch infrared diode, the other receives, obscured when sending and receiving process, the output level of sensor changes, after dealing with the voltage comparison circuit into a single chip microcomputer, trigger a sound and light alarm.Gas sensor module converts the concentration of the combustible gas in air to the corresponding analog voltage value, after analog-to-digital conversion into single chip microcomputer, when the concentration of combustible gas than alert, trigger a sound and light alarm.After trying to debug the design, eventually realize the function of the well. KEY WORDS: STC89C52，GSM Modem，Active infrared detectors, Combustible gas leak detection前　言 1 第1章 绪论 2 1.1 选题的背景和意义 2 1.2 国内外研究动态 2 1.3 本文主要研究内容与结构 2 1.3.1 研究的主要内容 2 1.3.2 研究内容的结构 3 第2章 系统总体方案 5 2.1 设计要求 5 2.2 设计目标 5 2.3 系统框图 6 第3章 硬件系统设计 7 3.1 单片机最小系统 7 3.1.1 STC89C52单片机 7 3.1.2 单片机最小系统 10 3.2 GSM短信模块 11 3.2.1 SIM