单片机温湿度检测设计参考论文.docVIP

摘 要 本次设计是采用STC89C54单片机加上低成本的温湿度模块DHT11构成的温湿度检测系统。设计主要由硬件与软件两部分设计构成。硬件方面包括单片机STC89C54、温湿度模块DHT11、显示模块LCD1602、电池电源、I2C存储器以及控制按键等5个部分。此系统完全基于单片机最小系统并进行一定的改进，系统电路简单，工作稳定，调试方便，可以精确到1，因此具有一定实用性。系统提供3中工作模式，可以分别显示温度、湿度、温湿度报警上下限，超出温湿度限定的范围蜂鸣器实现报警。为了方便实用，系统使用3节1.5v电池作为电源，方便使用。软件部分则是本系统所使用的C语言程序。 DHT11数字温湿度传感器是一款含有已校准熟悉信号输出的温湿度复合传感器，它应用专用的数字模块采集技术和温湿度传感技术，确保产品具有极高的可靠性和卓越的长期稳定性。传感器包括一个电阻式感湿元件和一个NTC测温元件，并与一个高性能8位单片机相连接。因此该产品具有品质卓越、超快响应、抗干扰能力强、性价比极高等优点。【关键词】DHT11 温度 湿度 报警 ABSTRACT This design is the STC89C54 single-chip microcomputer and low cost of the temperature and humidity of the temperature and humidity DHT11 module a detection system.Design mainly by the hardware and software design consists of two parts. Hardware including monolithic integrated circuit AT89S52, temperature and humidity DHT11 module, display module LCD1602, battery power supply, the I2C memory and control such as keys in five parts. This system is completely based on single chip minimize system and some improvement, the system circuit is simple, stable work, convenient debug, accurate to 1, so there are some practical. Three of the system to provide the work mode, can show different temperature, humidity, temperature and humidity on the alarm limit,and Beyond the range of temperature and humidity limit buzzer realize the alarm. In order to facilitate the practical, systems use 3 quarter 1.5 v battery as a power supply, convenient use. Software part is the system used by C language program. DHT11 digital temperature and humidity sensor is a contain already calibration familiar with signal output of the temperature and humidity sensor compound, used special digital module collection technology and temperature and humidity sensor technology to ensure that products with high reliability and excellent long-term stability. Sensors including a resistive are wet components and a NTC (temperature sensor, and with a high performance eight single chip connected. So the product has excellent quality, su