摘要
随着智能家居理念的普及，台灯作为日常学习和工作的重要照明工具，其节能性与智能化需求日益凸显。传统台灯多依赖手动开关和亮度调节，存在忘记关灯导致的能源浪费，且无法根据环境光线自动适配亮度，影响用眼舒适度。
基于 STC89C52 单片机的智能台灯设计，整合了 5516 光照监测模块、D203S 人体热释电传感器、DS1302 时钟模块、3 个独立按键、LCD1602 显示屏及 LED 照明模块，实现了照明的自动化与智能化控制。系统核心功能包括：通过 5516 模块实时监测环境光照强度；借助 D203S 传感器检测人体活动，当检测到有人且光照强度低于设定最大值时自动开灯，光照低于最小值时自动调至最亮，在最大值与最小值之间时根据光照自动调节亮度；通过 DS1302 获取时间，支持按键修改；3 个独立按键可实现时间调整、手动亮度控制及模式切换；LCD1602 实时显示光照值、人体检测状态、当前亮度及工作模式。
该系统的实现，有效解决了传统台灯的能源浪费问题，通过自动感应与亮度适配提升了使用便捷性与用眼健康，为智能家居照明设备的低成本智能化改造提供了参考，具有较高的实际应用价值。
关键词：STC89C52；智能台灯；光照监测；人体感应；自动调光；时钟模块
ABSTRACT
With the popularization of smart home concepts, table lamps, as important lighting tools for daily study and work, have increasingly prominent demands for energy efficiency and intelligence. Traditional table lamps mostly rely on manual switching and brightness adjustment, leading to energy waste due to forgotten 关灯，and cannot automatically adapt brightness according to ambient light, affecting eye comfort.
The smart table lamp design based on the STC89C52 microcontroller integrates 5516 light monitoring module, D203S human pyroelectric sensor, DS1302 clock module, 3 independent buttons, LCD1602 display and LED lighting module, realizing automatic and intelligent control of lighting. The core functions of the system include: real-time monitoring of ambient light intensity through the 5516 module; detecting human activity with the D203S sensor, automatically turning on the light when a person is detected and the light intensity is lower than the set maximum value, automatically adjusting to the brightest when the light is lower than the minimum value, and automatically adjusting brightness according to light between the maximum and minimum values; obtaining time through DS1302, supporting button modification; 3 independent buttons can realize time adjustment, manual brightness control and mode switching; LCD1602 displays light value, human detection status, current brightness and working mode in real time.
The implementation of this system effectively solves the problem of energy waste of traditional table lamps, improves the convenience and eye health through automatic induction and brightness adaptation, provides a reference for low-cost intelligent transformation of smart home lighting equipment, and has high practical application value.
Keywords:STC89C52; Smart table lamp; Light monitoring; Human body induction; Automatic dimming; Clock module
目录
第 1 章 绪论
1.1 研究的目的及意义
1.2 国内外发展情况
1.3 本文主要研究内容
第2章 设计思路与方案论证
2.1 主要元器件选择
2.1.1 主控芯片选择
2.1.2 光照监测模块选择
2.1.3 人体感应模块选择
2.1.4 时钟模块选择
2.1.5 按键模块选择
2.1.6 显示模块选择
2.1.7 照明模块选择
2.2整体设计方案
第 3 章 硬件设计
3.1 主控电路模块
3.2 光照监测模块电路
3.3 人体感应模块电路
3.4 时钟模块电路
3.5 按键模块电路
3.6 显示模块电路
3.7 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 LCD1602显示模块子流程设计
4.4 ADC模数转换子流程设计
4.5 时钟模块子流程设计
第 5 章 实物测试
5.1 整体实物测试
5.2 光照监测模块功能测试
5.3 人体感应模块功能测试
5.4 时钟模块功能测试
5.5 按键模块功能测试
5.6 显示模块功能测试
第 6 章 总结与展望
6.1 总结
6.2 展望
致谢
参考文献
附录
附录一：原理图
附录二：PCB
附录三：主程序
