基于 DHT11传感器的温湿度采集系统

摘要

针对环境温湿度采集系统对功耗及成本的要求，设计以Cortex-M3为主控芯片，选用DHT11作为温湿度采集传感器，将采集的温湿度数据显示到TFTLCD。如果采集的数据超过要求，蜂鸣器发出报警信号。实验结果表明该系统电路简单，工作稳定可靠。%A temperature and humidity acquisition system is designed by using Cortex-M3 as the main controlling chip and DHT11 as the sensor of temperature and humidity , which meets the requirements of low power consumption and costs .TFTLCD is used to display temperature and humidity values .If the collected data is over requirement , a buzzer sends out alarm signal .Ex-perimental results show that the system works stably and reliably with simple circuit .