摘要随着时代的变迁，现如今越来越多的家庭选择独生子女，导致人老几代以一个孩子为中心的社会现象越发普遍，儿童也成为了一个家庭的核心。与此同时，拐卖儿童的社会不法行为也在层出不穷，多少家庭因此由幸福走向悲痛。科技产品的设计与制造，向来以社会需求为导向，手环类移动设备的广泛流行，使得儿童在监护人不知情的情况下走失或被带走的可能性得以降低。
在本次手环设计中，信号接收器端的主机选用了KL25单片机作为主控芯片，蓝牙芯片BLK-MD-BD04-B作为设备间的通信模块，制作了一个儿童防失散手环，在儿童超出预定距离的情况下，主控芯片KL25通过GPIO控制蜂鸣器提醒父母。实现了当儿童走出预定范围后，信号接收端提醒父母，儿童超出预警范围，从而协助父母监管子女的动向，并在父母未察觉到危险时进行提醒。
在进行多轮测试后，此次设计已经达到了防止儿童在父母未察觉其动向的情况下走失的功能，更能有效的提醒父母儿童已经超出可控范围。77253
该论文有图6幅，表3个，参考文献12篇。
毕业论文关键词：蓝牙 KL25 蜂鸣器
Children anti-lost alarm wristband design
Abstract As time passes by,there are more and more families who choose to have only one child。As a result,there is a more widespread social situation that paying close attention to the child among older generations。Children become the central of the family。At the same time,an illegal behavior called trafficking in children emerges in endlessly。Many families go into hell from happiness。The designing and producing of technology products are always based on requirement of society。The popular trend of mobile bracelet decreases the possibility of lost and trafficker of children in the situation that their guardians don’t know。
In this bracelet design,the host computer of the signal receiver chooses KL25 as master chip and Bluetooth chip BLK-MD-BD04-B as communication module between facilities。Then the anti-trafficker bracelet for children born。In the situation of the children beyond the proposed distance,the master chip KL25 would alarm the parents through GPIO controlled buzzer。It achieves the result that when the children go out of the proposed distance,the signal-receiving terminal may alarm the parents in order to help the parents monitor their children,as well as warns them before the danger happens。
After many terms of detect,this design achieves the function that avoid children trafficking when their parents don’t know。It may also remind them that their children beyond their control area。
This dissertation would include 6 diagrams,3 tables and 12 references。
Key Words: Bluetooth KL25 Buzzer
目 录
摘要Ⅰ
AbstractⅡ
目录Ⅲ
1 绪论 1
1。1研究背景和意义-1
1。2主要工作内容-1
2 系统开发的相关技术与工具2
2。1C语言简2
2。2CCODEWARRIOR2
3系统需求及设计方案-4
3。1整体设计方案-4
4系统硬件设计-6
4。1微控制器MCU6
4。2微控制器KL25的最小系统-6
4。3蓝牙模块8
4。4UART模块功能概述及编程-10
4。5TPM定时器12
4。6蜂鸣器电路-13
5 结论13
5。1总结14
5。2不足之处-14
5。3儿童防失散报警手环的发展趋势-14
参考文献15
致谢-16
1绪论
1。1研究背景和意义
孩子作为家庭的核心，也是父母的希望与未来。然而，近年来，拐卖儿童案件屡现报端。分析大多数儿童丢失案件，父母及看管人的疏忽给了不法分子以可乘之机，从而从家长的眼皮下将孩子带走，从而让看管人后悔莫及，痛心疾首。作为孩子的看管人，很难做到每时每刻都把目光都放在孩子身上，难免会因为周边发生的一些事情而分散注意力，放松警惕。本课题拟设计款儿童防失散报警手环，可以协助监护人看管孩子，能够在孩子被带离时发出警报提示监护人，从而避免发生儿童丢失的惨剧。当前，智能便携式穿戴设备产业已经成为备受各方关注的新兴行业。但以儿童为导向，协助监护人看管儿童的防失散便携式设备产品依然处在空白，而该领域，却存在着巨大的潜在市场需求，本课题拟设计一款儿童防失散报警手环，来更好的关注儿童安全问题。 KL25单片机儿童防失散报警手环的设计:http://www.youerw.com/tongxin/lunwen_88761.html