基于低功耗蓝牙技术防丢器的设计与实现

基于低功耗蓝牙技术防丢器的

设计与实现

Design and Implementation of Lose Control Device Based on BLE

摘要

随着社会的进步，现代生活节奏的加快，在快节奏的都市生活中，人们外出的机会也越来越多，很多人常常会丢三落四，常常会记不清楚把手提包、钱包、手机等重要物品放在哪里。更要命的是有时候带孩子上街，稍不留意孩子就跑丢了。随身带的手提包、钱包、手机等重要物品有时候也不免被小偷盯上。为了防止这样的事情发生，人们可能直接将贵重物品挂在胸前、手腕上或者拴在腰上，或者直接塞进口袋。岂不知这样对自身的形象和舒适性产生很多影响。

于是电子防丢失报警器应运而生，它设计小巧玲珑，便于携带，广泛用于手机、钱包、箱包、小孩等贵重物品（人）的防偷及防丢失之用。其距离在一定范围内可以任意调节，具有防丢、寻找、警音（或附带振动）等功能，省电，环保，性能稳定可靠。方便适用，生活中必不可少。

本次课题针对的对象是老人（或小孩），旨在采用低功耗蓝牙技术，在老人意外走失时，防丢器能及时发出报警信息，让家人能通过手机接受到这一信息，以便采取相应措施防止老人走失，避免家人担心。

关键词：低功耗蓝牙 CC2540芯片防丢器

Abstract

With the progress of the society, to accelerate the pace of modern life, in the fast-paced city life, people go out opportunity also more and more, many people often forgetful, often can not remember the handbag, wallet, mobile phones and other important items to be placed in where. Awfuller is sometimes the kids in the street, a little attention the child ran away.Carry a handbag, wallet, mobile phone and other important items are sometimes not thieves eyeing. In order to prevent the occurrence of such things, people may direct the valuables hanging in the chest, wrists or tied around the waist, or directly into his pocket. Have a lot of influence on their own do not know such image and comfort.

So the electronic anti lost alarm came into being. It is designed with small and exquisite, easy to carry, widely used for stealing and loss prevention in the prevention of mobile phones, wallets, bags, children and other valuables (person). The distance in a certain range can be adjusted, with anti lost, search, alarm sound (or incidental vibration) and function, energy saving, environmental protection, stable and reliable performance. Easy to apply, essential in life.

The topic for the object is the old man (or child), aims to use low power Bluetooth technology, in the old man accidentally lost, anti lost device can issue timely warning information, let the family can be via mobile phone to receive this information, in order to take corresponding measures to prevent the old man lost, avoid family worry.

Keywords:Low Power Bluetooth CC2540 chip lose control device

目录

摘要................................................................I Abstract............................................................II 绪论. (1)

1 蓝牙技术背景 (2)

2 BLE 特点 (3)

3 BLE 结构概述 (4)

3.1 体系结构 (4)

3.2 物理层PHY规范 (6)

3.3 链路层LL规范 (6)

3.4 HIC 规范 (7)

3.5 主机规范 (8)

4 防丢器 (10)

4.1 原理 (10)

4.2 功能 (10)

5 硬件设计 (12)

5.1 防丢器的硬件设计 (12)

5.2 蓝牙芯片的选型 (12)

5.3 CC2540 芯片模块的设计 (14)

5.4 设计中采取的抗干扰措施 (15)

6 软件设计 (16)

7 测试 (20)

结论 (21)

致谢 (22)

参考文献 (23)