sm8sfk单片机的交流LED调光控制系统毕业论文.docx

目 录1. 绪论1 1.1 本课题研究的背景和目的1 1.2 本论文研究的主要内容32. stm8s单片机最小系统设计 4 2.1 stm8s单片机电源系统设计4 2.2 stm8s单片机最小系统设计73. 零点检测电路设计14 3.1 零点检测电路设计需要14 3.2 零点检测电路实现154. 旋转编码开关、LED灯与红外设计18 4.1 旋转编码开关18 4.1.1 旋转编码开关工作原理18 4.1.2 开关外围设计电路实现19 4.2 旋转指示LED灯设计20 4.2.1 LED灯指示原理20 4.2.2 实现电路20 4.3 程序设计21 4.4 红外设计23 4.5器件和原理23 4.5.1 发射步骤26 4.5.2 遥控信号接收27 4.5.3 电路连接28 4.5.4 NEC协议解析与编程流程图285. 主电路及驱动电路设计316. 软件开发及流程图编写34 6.1 IAR集成开发环境34 6.2 系统软件设计流程图编写367. PCB 制作398. 实验结果记录和实物照片42参考文献49致 谢50 摘 要 节能减排是我国可持续发展的重要策略，随着节能LED灯的发展，其控制问题显得越来越重要。 本文采用交流电后沿触发方式设计出一款交流LED灯调压调光控制系统。系统采用8位高性价比的stm8s103k3单片机为主控芯片，对输入220VAC进行零点检测，按照旋钮编码开关或红外一体接收电路信号的指令，控制交流LED灯供电周期的切相时间的长短，从而实现LED灯的调压调光控制。本系统的创新点在于采用开关电路作为交流LED灯供电电路的负载，能够克服传统可控硅前沿触发方式的缺点，实现节能。通过实物制作与测试，该控制系统能够实现LED灯的调压调光控制功能，具有操作方便、可靠性高，实用性强，效率高等特点。关键词：stm8s103k3； 交流LED调光； 信号处理； 红外接收； 编码开关ABSTRACT Energy conservation is an important strategy for sustainable development in China, with the development of energy-saving LED lights, the control issues become increasingly important. In this paper, trigger mode of the AC trailing edge is utilized in the voltage regulator AC LED lights dimming control system.System uses eight high cost stm8s103k3 micro-controller as the master chip, Directly to 220VAC input,it is used for zero point detection, in accordance with the rotary encoder switch or infrared signal receiving circuit integrated command, it could control AC powered LED lights cycle the length of time of phase cut in order to achieve LED regulating the lamp dimming control.The innovation of this system is the use of LED light switch circuit as an AC load .Power supply circuit is able to overcome the traditional shortcomings of silicon edge trigger mode, to achieve energy saving. Through in-kind production and testing, the control system can achieve a regulator LED lights dimming control function, with easy operation, high reliability, practicability and high efficiency.Keywords：stm8s103k3; Ac LED dimmer; signal processing; infrared Receiver； code s