人体智能调向电风扇毕业论文精要.doc

摘 要 在炎炎夏日里，当我们需要改变活动位置时，时常需要手动调整风扇的摇头范围以确保送风的精确性。另一方面，即使在夏季，许多地区都存在昼夜温差大的现象，尤其给小孩的健康带来不小的威胁，此时若有温控调速的功能便能大大提高风扇的人性化。本课题便是基于以上两个问题来设计人体智能调向电风扇。 本系统采用STC89C52单片机作控制器， E18-D50NK检测人体，通过单片机控制步进电机来带动风扇摇头从而跟踪人的位置，以此实现风扇智能调向。同时采用DS18B20温度传感器，根据检测到的温度与预设温度进行对比，通过两者间的差值了来决定风扇的开、关以及风速的大小，并用LCD显示当前的实际温度与预设温度，预设温度可以利用按键进行调节。本系统最终可以实现感应人体并调向送风以及温控调速的功能。 关键词 风扇智能调向；温控调速；单片机 Abstract In the summer, especially under the trend of global warming, how to effectively lower the temperature of the environment has become the hotspot of scientists’ study. Although various types of air conditioners can cooling more quickly, considering about environmental protection, price and flexibility, eletric fan still has the advantages. However, if you want to make the eletric fan to stay competitive in a number of cooling appliances, there are several problems should be solved and improved. Intelligent orientation of fan and temperature-controlled speed regulation are two aspects of it. This design uses STC89C52 MCU as controller, E18-D80NK to detect human body, stepper motor as a device which simulates fan shaking. When detecting the human body, stepper motor that controlled by the MCU adjusts orientation intelligently. And using DS18B20 as temperature sensor. To controll the fan turn on or turn off by comparing the detected temperature and the preset temperature according to different results, and wind speed as well. At the same time using the LCD to display the current actual temperature and the preset temperature. The preset temperature can be adjusted by using the buttons. Key words Intelligent orientation of fan Temperature-controlled speed regulation MCU 目录 摘 要 I Abstract II 第1章 绪论 1 1.1 研究背景 1 1.2 研究现状及发展趋势 1 1.3 研究的主要内容 2 第2章 人体智能调向电风扇具体方案 3 2.1 总体思路 3 2.2 方案论证 3 2.2.1 单片机选择 3 2.2.2 红外传感器选择 4 2.2.3 温度传感器选择 4 2.2.4 调向装置选择 5 2.2.5 步进电机驱动芯片选择 5 2.2.6 显示模块选择 6 2.3 本章小结 6 第3章 系统硬件设计 7 3.1 系统组成框图 7 3.2 控制模块电路 7 3.3 红外传感器模块电路 8 3.4 温度传感器模块电路 8 3.5 步进电机模块电路 9 3.6 显示模块电路 10 3.7 本章小结 10 第4章