摘  要随着经济的发展，汽车作为一种便捷和舒适的日常交通工具逐渐走进千家万户。但近年来时常发生幼小儿童被丢忘在汽车内的事件，重者导致儿童窒息而死，伤亡安全事故频频发生,车载人员安全事故给人们敲响了警钟。本课题设计了基于GSM汽车人员报警系统，它能很好避免惨剧地发生。汽车安全报警系统主要由STC89C52C单片机、GSM 无线通信模块 TC35i 、MPU-6050三轴加速度陀螺仪模块、红外人体传感器、声音传感器和DS18B20 温度传感器等组成。当速度传感器监测到车辆停止时，通过红外人体传感器检测车内的人员情况、温湿度情况。当检测汽车停止、车内有人，并且温度、分贝超过限定值时，单片机则自动控制 GSM 模块向手机发送短信并拨打电话，实现报警。通过实验验证了本系统运行稳定、抗干扰能力强、灵敏度高、安全性强，可以实现警情地实时传送，可以有效避免安全事故地发生。77652

该论文有图15幅，表2个，参考文献17篇。

毕业论文关键词：GSM模块（TC35i）  STC89C52单片机  MPU-6050三轴加速度陀螺仪  人体传感器    DS18B20 

Automotive person alarm system based on GSM  module

Abstract Vehicle had come into the thousands of families and bringed convenient and comfortable，with the development of automotive industry。But children choking casualty accidents has occured frequently in recent years，safe and reliable of cars are knocking the alarming clock。Based on GSM Crew members car alarm systerm is designed in the project, which can efficiently avoid the tragedy。 Auto safety alarm system is constituted by the SCM（Single chip microcomputer）STC89C52C single-chip,GSM module (of TC35i),MPU-6050 three-axis accelerometer,Infrared sensor;DS18B20 temperature sensor;voice sensor and so on。 Carefully explains that gathers periphery information through monolithic integrated circuit’s on  sensor ． Then realizes the monolithic integrated circuit and the GSM module correspondence，phone transmission note for SIM card 。When the auto stopped ,some people in the car and the temperature exceeds the limit value，the microcontroller will automatically control the GSM module to the phone to send SMS or make calls．Experiments show that the system is stable and reliable,strong anti-interference capacity,high sensitivity,strong security, which can transfer alarm information in time and avoid the emergence of the  security accident effectively。

Key Words: GSM module (of TC35)  STC89C52C single-chip  MPU-6050 three-axis accelerometer  Infrared sensor  DS18B20 temperature sensor  SMS alarm

目  录

摘要Ⅰ

Abstract-Ⅱ

目录Ⅲ

图清单-Ⅳ

表清单-Ⅳ

1 绪论-1

1。1课题背景-1

1。2课题目的-1

1。3课题前景-2

2 系统方案设计3

3 系统硬件设计5

3。1 51单片机5

3。2 GSM模块9

3。3 DS12B80温度传感器11

3。4人体红外传感器14

4 软件设计16

5 总结-19   

致谢21 

参考文献22

图清单

图序号 图名称 页码

图2-1 系统原理图 4

图3-1 STC89C52最小系统 6

图3-2 STC89C52的引脚图 8

图3-3 GSM模块初始流程图 9

图3-4