摘要：随着科技的飞速发展，我们的生活中手机变成了必须品，几乎每一个人都有一个，但是生活的步伐正在加快，我们有时会对于手机疏于看管，而造成手机的丢失、被盗。相信很多人都曾有过手机丢失的惨痛经历，因为手机丢失而造成的信息丢失和财产丢失会增添很多不必要的麻烦。现在生活节奏变得越来越快，周遍的环境却日益恶化，健忘、疏忽、被窃等原因造成的贵重物品的丢失几乎每天都在上演。因此，为了防范这些意外的发生，你身边需要有一个忠实的保护神，那就是随身佩带一套防丢器，她可以有效保护你的贵重物品免于丢失！  26893
本蓝牙手机防丢器由STC89C52单片机、晶振电路、复位电路、蓝牙模块电路、电源模块和手机接收报警模块组成。首先打开主板蓝牙和手机蓝牙进行配对，配对完成后，单片机通过和蓝牙模块HM-05和串口发送数据，手机蓝牙接收数据。当手机和蓝牙主板的距离超过一定距离时，手机发出报警声，提示手机丢失，马上回去寻找。蓝牙防丢器具有低功耗、稳定性好、超强的抗干扰能力、低成本、性价比高等特性。
毕业论文关键字：STC89C52单片机  手机防盗  蓝牙通信
 Bluetooth Anti-lost System Based on Microcontroller
Abstract：Mobile phone has become a necessity for life in the wake of rapid scientific and technological development so that almost everyone has a mobile phone; but it is often lost or stolen due to fast-paced life. Undoubtedly, many people have suffered from such unnecessary troubles as information loss and property loss caused by lost mobile phone. With increasingly faster living tempo and deteriorating surroundings, loss of valuables resulted from forgetfulness, negligence and steal happens every day. In order to prevent such accidents, you need a loyal patron saint-a tracker which can prevent your valuables from being lost!     
This Bluetooth mobile phone tracker consists of STC89C52 single-chip, crystal oscillating circuit, reset circuit, Bluetooth module circuit, power module and receiving alarm module. Open the main board Bluetooth and match it with mobile phone Bluetooth, the singlechip sends data through Bluetooth module HM-05 and serial port and mobile phone Bluetooth receives data. In case of a certain distance between the mobile phone and the Bluetooth main board, the mobile phone will alarm and remind you of loss and immediate search. The Bluetooth tracker has the advantages of low power consumption, good stability, strong anti-jamming capability, low cost and high cost performance.
 Key words: STC89C52 single-chip  Anti Theft of Mobile phone  Bluetooth 
目录
摘要    1
Abstract    2
1、绪论    4
1.1课题的背景    4
1.2 蓝牙设计的意义    4
2、总体方案设计    4
3、系统方案比较、设计与论证    5
3.1主控制器模块的方案比较    5
3.2蓝牙模块的方案选取    6
3.3电源选取    6
4、芯片资料简介    7
4.1 STC89C52单片机的简介    7
4.2芯片的各引脚介绍    8
5、硬件实现及单元电路设计    8
5.1主控制模块    8
5.2报警模块的设计    10
5.3电源部分的设计    10
6、系统软件设计    11
6.1程序结构分析    11
6.2系统程序流图    11
7、系统的安装与调试    12
7.1安装步骤    12
7.2调试步骤    13
7.3故障的发现与解决    13 基于单片机的蓝牙防丢器系统设计+电路图+源程序:http://www.youerw.com/zidonghua/lunwen_21190.html