基于单片机的温湿度监测与控制重庆邮电大学.docVIP

基于单片机的温湿度监测与控制 摘 要 本次设计是采用MSC-51系列单片机中的AT8951和DHT11的低成本的温湿度的检测系统。单片机、温湿度传感器、显示模块、报警器以及键盘等部分由温湿度传感器及字符型液晶模块构该系统电路简单、工作稳定、集成度高，调试方便，测试精度高，具有一定的实用价值。【关键词】AT89S51 DHT11  ABSTRACT This design is the use of MSC-51 Series MCU AT89S51 and DHT11 in the low-cost temperature and humidity detection system. This design includes the design of hardware and system software design. Hardware circuit includes a microcontroller, temperature and humidity sensors, display module, the alarm and the keyboard 5, the DHT11 temperature and humidity sensor and 1602 constitute a system of character LCD module display module, the system circuit is simple, stable, high integration, commissioning Convenient, high precision, has some practical value. Temperature and humidity control circuit in which the temperature and humidity sensors and compare the value of the preset temperature alarm circuit, the user input required pre-default value, when the actual temperature and humidity measurements of temperature and humidity is greater than the preset value, an alarm signal (bee Buzzer beep). Software part includes the main program, display routines, subroutines side temperature and humidity The design uses the DHT11 temperature and humidity sensors is a digital output with a calibrated temperature and humidity combined sensor, the sensor includes a resistance and a sense of the original wet NTC temperature measurement devices, and with a high-performance 8-bit microcontroller connected. Therefore, the product has excellent quality, fast response, anti-interference ability, high cost and other advantages. AT89S51 is a low consumption of item-level, high-performance CMOS8 bit microcontroller, because of its powerful features and low price, so use it in many fields. 【】Temperature measurement Humidity measurement AT89S51 DHT11  目 录 前 言 1 第一章 工具简介 4 第一节C语言 4 一、C语言的优点 4 二、C语言的缺点 4 第二节 Proteus 4 第三节 Protel 5 一、软件特色 5 二、仿真特点 5 第四节 本章小结 5 第二章 设计任务分析及方案论证 6 第一节 设计任务要求和温湿度控制的发展 6 一、设计