基于STM32的智能儿童坐姿矫正仪的设计

基于STM32的智能儿童坐姿矫正仪的设计(论文16000字)
摘要：由于青少年绝大多数缺少自控能力和纠姿意识，坐姿监督和纠正成为了儿童活动和学习最迫切的需要。本设计采用超声波传感器和红外光电传感器作为测距元件，以STM32单片机为主控核心，实现了一个智能儿童坐姿纠正系统。该系统具有超声波测速、报警、WIFI传输、报警计数、复位等功能，同时具有低功耗、灵活安装快、多角度测量等特点。相对于传统的纠姿仪功能比较单一，安装比较不够方便，本设计可以根据儿童的身高身材进行调整传感器的高度和位置。经实验测试表明，在孩子独自学习时仪器能够及时报警纠正错误坐姿，然后通过WIFI发送报警情况给家长，家长事后可以进行教育和提醒，极大地提高了坐姿监督和纠正的准确性和实用性。
关键词：坐姿纠正、单片机STM32、测距、多角度、WIFI传输。

Design of intelligent children sitting posture correction instrument based on STM32
Abstract：As the vast majority of adolescents lack of self-control and correct attitude, posture supervision and correction has become the most urgent needs of children's activities and learning. The design builds a smart children sitting correction system by using ultrasonic sensors and infrared photoelectric sensors as ranging components, whose main control core is STM32 microcontroller. The system has the functions of ultrasonic velocity measurement, alarm, WIFI transmission, alarm count, reset, etc. It also has the advantages of low power consumption, flexibility, fast installation and multi angle measurement. Compared to the traditional tactile with the relatively simple instrument function, which is not enough convenient, it can adjust the height and location of the sensor basing on the height of the child's body. The results of experiment show that the instrument can timely alarm to correct the wrong posture when the children learn alone, then the situation of alarm will be sent to the parents through the WIFI message. After the alarm, the parents can remind their children to take care of posture. It improves the quality of correcting the posture greatly.

Keywords: posture correction; STM32; ranging; Multi angle; WIFI transmission.
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目 录
1.绪论    1
1.1研究背景及意义    1
1.2国内外的研究现状    1
1.3 本课题内容    2
2.系统总体设计    4
2.1 总体电路的设计    4
2.2 系统硬件选择    4
2.2.1主控芯片的选择    4

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2.2.2 传感器的选择    6
2.2.3 WIFI模块的选择    7
3.系统硬件电路的设计    8
3.1传感器电路设计    8
3.1.1光电开关传感器    8
3.1.2超声波传感器    9
3.2电平转换电路    9
3.3单片机主控模块    9
3.3.1单片机最小系统    9
3.3.2报警模块    10
3.3.3复位电路    11
3.4 WIFI通讯模块    12
3.5 稳压滤波电路的设计    12
3.6 PCB布线图的设计与制作    13
4.系统软件设计    15
4.1系统软件总体程序 设计    15
4.2分模块程序设计    15
4.2.1单片机程序的设计    15
4.2.2光电测距程序    16
4.2.3 超声波测距程序    17
4.2.4蜂鸣器报警程序    19
4.3 WIFI通信模块程序设计    19

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4.4 ONENET中移物联网平台    19
5.系统调试及用户实验    21
5.1硬件的焊接    21
5.2 硬件实物安装    21
5.3超声波传感器测距调试    22
5.4平台结果    24
5.4.1查询流程    24
5.4.2查询结果    24
5.5误差分析    25
6.结论    26
参考文献    27
致谢    28
附件一    29
附件二    29 [资料来源：http://think58.com]