基于P89LPC920FDH的温湿度控制器  

Temperature and Humidity Control Based on P89LPC920FDH

作　　者：席东河[1] 杨雷[2] 解芳[2] 陈平平[2] 

机构地区：[1]郑州大学物理工程学院,郑州450052 [2]东莞理工学院,东莞523808

出　　处：《微计算机信息》2008年第29期104-105,103,共3页Control & Automation

摘　　要：设计了一种温湿度控制器,该控制器采用P89LPC920FDH单片机为核心。P89LPC920FDH微控制器内部集成有比较器、看门狗定时器、复位电路等功能模块。主控电路板采用微控制器内部的比较器来检测交流市电的过零点,用内部定时器延迟一段时间后向可控硅发触发脉冲来控制交流电的导通角,从而控制加热功率电路等工作达到控制环境温湿度的目的。One kind of humiture controller was designed, P89LPC920FDH microcontroller unit （MCU） is the core of the controller. It has many inner function modules, such as comparator, watchdog , inside replacement circuit, ete. The master control board uses one of the inner comparator of P89LPC920FDH to detect the time when the city alternating current passing zero point. Timing a period of time counted by inner counter, then P89LPC920FDH send a trigger pulse to the controllable silicon to control the lead angle of the alternating current. Then the heating power circuit is controlled and the environment humiture is controlled thereby.

关 键 词：P89LPC920FDH 温湿度控制 红外线 遥控 导通角 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] TP271[自动化与计算机技术—控制科学与工程]