毕业论文-基于单片机的园林景观灯设计.docxVIP

基于单片机的园林景观灯设计摘要本文介绍了一种基于单片机的园林景观灯照明系统，给出了该系统的控制流程、硬件设计以及软件设计。此系统采用STC12C2052AD作为控制中枢；利用人体恒温特性，使热释红外传感器,通过检测人体所反射的特定的红外线波长来采集人体热释电传感信号；利用光敏电阻来测量周围环境光强信号。将得到的模拟信号经过STC12C2052AD内置的AD转换模块转换后变成数字信号并传送到控制中枢，单片机对比预设的阀值范围产生不同占空比的PWM波，运用PWM脉冲调制器来驱动LED园林景观灯，实现根据是否有人通过以及外环境光强不同，控制景观灯亮度；并且加入了人机互动模块通过按键来进行LED园林景观灯的人工控制。从而实现了对园林景观灯系统的智能和节能控制。此园林景观灯照明系统设计简单、电路可靠，既能充分利用LED灯的优势，又可以减少能源消耗，实现环保功能。关键词: 单片机,光强,热释电,AD转换,节能Landscape Lamp design based on MCUElectronic Information and Technology Program11-2 Mandy Gao SupervisorChen jingAbstractIn this paper, a landscape lamp lighting system based on single chip microcomputer, gives the control process of the system, hardware design and software design. This system adopts stc12c2052AD as control center; Constant temperature characteristics of the human body is used by pyroelectric infrared sensor for detecting human body reflected certain infrared wavelength to gather human pyroelectric sensor signal; Using photosensitive resistance to measure the ambient light intensity signal. Will receive analog signals through stc12c2052AD built-in AD conversion module converted into digital signal and transmitted to the control center, microcontroller contrast the preset threshold range of different duty ratio of PWM wave, using PWM pulse modulator to drive LED landscape light, implementation according to whether someone through and light intensity in the external environment, landscape lamp brightness control; And join the human-computer interaction module through the buttons for LED landscape lamp artificial control. So as to realize the intelligent and energy-saving control of landscape lamp system. This landscape lamp lighting system is simple and reliable circuit design, can make full use of the advantages of LED lights, and can reduce energy consumption, achieve environmental protection function.Key words：MCU,light intensity,Pyroelectric transducer,AD Transition,saving目录1 绪论11.1 背景及目的11.1.1园林景观照明设计的原则11.1.2 园林景观的照明对象11.2国内外已有的研究成果——三种园林景观照明控制系统21