设计说明书
总字数：19000+
摘 要
儿童处于成长的关键时期，不良的坐姿容易导致驼背和近视。传统的儿童书桌高度固定，使得很多儿童由于高度不合适导致坐姿不端正，严重影响了儿童的身体健康。为了有效预防驼背和近视的加剧，国家提出了“科学用眼、预防近视”的指导方针，对现有的书桌进行升降高度、智能补光、智能提醒等措施，使书桌具备监测视力和坐姿等功能。本设计采用STM32作为主控芯片，通过3个传感器分别监测台灯到人的距离、光照强度和环境温度，根据实时状态对坐姿、光照强度和环境温湿度进行调整，使智能书桌的相关参数处于适宜的范围之内，有效的保证学习者的学习激情和身体健康。实物测试表明，该智能书桌的设计，能有效改善传统书桌智能化程度不高的缺陷，使得儿童书桌具有良好的发展前景和现实意义。
关键词：书桌；显示屏；单片机；传感器；坐姿
Abstract
Children are in a critical period of growth, and poor sitting posture can easily lead to hunchback and myopia. The traditional children’s desk height is fixed, which makes many children sit incorrectly due to inappropriate height, which seriously affects children’s health.In order to effectively prevent the aggravation of hunchback and myopia, the state has put forward the guidelines of “scientific eye use and myopia prevention”, and measures such as lifting the height of the existing desk, intelligent light filling, intelligent reminder, etc., so that the desk has functions such as monitoring vision and sitting position. This design uses STM32 as the main control chip, and three sensors are used to monitor the distance from the desk lamp to the person, the light intensity and the ambient temperature, and adjust the sitting position, the light intensity and the ambient temperature and humidity according to the real-time state, so that the relevant parameters of the smart desk are within the appropriate range, and effectively ensure the learning passion and physical health of learners.The physical test shows that the design of the smart desk can effectively improve the defect of the low intelligence of the traditional desk, so that the children’s desk has a good development prospect and practical significance.
Key words: desk; Display screen; Single-chip computer; Sensor; Sitting position
目 录
第1章 绪 论
1.1 发展背景和现实意义
1.2国内外发展现状
1.3 设计功能实现
第2章 系统设计分析
2.1 系统总体设计分析
2.2 元器件选择
2.2.1 单片机的选择
2.2.2 按键的选择
2.2.3显示模块方案选择
2.2.4温湿度检测模块方案选择
第3章 控制系统硬件设计
3.1 单片机最小系统
3.1.1 主控模块电路
3.1.2 晶振电路
3.1.3 复位电路
3.1.4 电源电路
3.1.5 下载电路
3.2 光照强度检测模块电路
3.3 DHT11温湿度检测模块电路
3.4 HC-SR04超声波测水温模块电路
3.5独立按键模块电路
3.6语音播报模块(TTS)
3.7 显示模块电路
3.8继电器调节模块
3.9步进电机模块电路
3.10 LED照明模块电路
第4章 系统程序设计
4.1 编程软件介绍
4.2 系统主流程设计
4.3 独立按键
4.4 超声波检测模块子流程
4.5 步进电机子流程
4.6 温湿度检测模块子流程
4.7 OLED显示流程设计
第5章 实物测试
5.1 实物焊接
5.2 实物总体设计
5.3按键调节高度和角度功能测试
5.4坐姿调节功能测试
5.5照明灯调节功能测试
5.6休息提醒功能测试
5.7风扇降温功能测试
总 结
参考文献
附 录
附录1：原理图
附录2：PCB
附录3：主程序
购买后可查看具体内容！