摘要:随着节能环保观念的深入人心,传统照明的低能效越来越难以接受。因此,LED成为了最佳的选择。本次设计围绕LED的驱动,设计了一个能够实现电流可调的恒流LED驱动电源。并且,本设计与当前热门的物联网技术相结合,不只局限于恒流电源这一点,而是通过Wi-Fi模块,将控制芯片接入互联网,以架设在阿里云的Web服务器交互,因而使用者可以用手机应用远程监控嵌入式系统的状态,并可以远程控制嵌入式系统的状态,包括切换开关,调节亮度等。本文从硬件选择、电路设计、嵌入式操作系统和应用程序的实现,服务器与手机端应用的实现等方面,依次展示了完成一个物联网项目的完整步骤。77910
毕业论文关键词: 恒流;LED;物联网;远程控制
Research and Development of 50W LED Constant Current Power Controller
Abstract:As the concept of energy conservation and environmental protection being supported by more and more people, the low-energy-efficiency traditional lighting is not a valuable way to research。 Therefore, LED has become the best choice of illumination。 This design is about a LED driver, which is designed to achieve an adjustable constant current LED power driver。 In addition, this design is not limited to constant current power only。 Through the Wi-Fi module, the controller will access to the Internet, and interact with the Web server which is set up in Aliyun。 Thus we can use a mobile phone application to monitor and control the status of the embedded system remotely。 This paper discussed the hardware selection, circuit design, embedded operating system and application implementation, server and mobile terminal application programming and other aspects。 It showed all the details to achieve an IoT project。
KeyWords:CC;LED;IoT;Remote Control
目录
1 绪论 1
1。1 课题背景及意义 1
1。3 本文主要研究内容 3
2 LED驱动电路 4
2。1 LED的驱动方式比较 4
2。1。1 恒压驱动 4
2。1。2 恒流驱动 4
2。1。3 小结 4
2。2 LED恒流驱动的实现 5
2。3 电路参数计算 6
2。3。1 电路原理图 6
2。3。2 低压停机(UVLO)功能 6
2。3。3 过压保护值设定 7
2。3。4 LED电流设置 7
2。4 保护电路 7
3 控制电路实现 8
3。1 控制电路电源 8
3。2 主控MCU