毕设液晶温湿度显示.docVIP

液晶显示温湿度计硬件设计 摘　　要 温度与湿度和人们的生活息息相关。在工农业的生产、环境保护、国家边防、气象检测预报和科学研究等领域，经常需要对环境的温度和湿度进行测量和控制。因而精确测量温湿度对于生产和生活是非常重要的。但传统的温湿度计本身的精度不高，又不宜读取数据，因而易产生误差。 现要实现单片机控制的液晶温湿度显示计，采用SHT10温湿度传感器和AT89C52相连，实现对温湿度的测量。89C52内置8位中央处理单元、256字节内部数据存储器RAM、8K片内程序存储器（ROM）32个双向输入/输出（I/O）口、3个16位定时/计数器和5个两级中断结构，一个全双工串行通信口，片内时钟振荡电路。AT89C52单片机是此次设计的主控器，它与测量电路以及显示电路相连，将测量电路测得的数据进行处理并传输到显示电路上，判断测量结果是否超出额定限度，如果是则实现报警功能。 关键词：AT89C52单片机；LCD1602液晶显示屏；STH10温湿度传感器 LCD TEMPERATURE AND HUMIDITY METER HARDWARE DESIGN ABSTRACT Temprature and humidty are very close to people’s lives. In the field of production of industrial,enbironmental protection,national bodrder, weather forecasting and scientific research,often reauire measure and control the temperature and humidity of the environment. Thus accurate measurement of temperature and humidity for the production and life is very important .But the accuracy of traditional hygrometer itself is not high, they should not read the data, and thus easy to have a error result. Now to achieve a LCD display of temperature and humidity which controlled by single-chip, Using SHT10 temperature and humidity sensors and connected AT89C52, realize the measurement of temperature and humidity. 89C52 central processing unit built-8, 256-byte internal data memory RAM, 8K on-chip program memory (ROM) 32 bidirectional input / output (I / O) ports, three 16-bit timer / counter and five two interrupt structure, a full duplex serial port, on-chip clock oscillator circuit. AT89C52 SCM is the master of this design, it is connected to the measuring circuit and the display circuit, the measuring circuit for processing the measured data and transmitted to a display circuit, determines whether the measurement result exceeds the rated limit, an alarm function if it is then . Key words: STH10；temperature and humidity compensation；AT89C52；LCD1602 目　　录 １　绪论 1 1.1　课题来源和意义 1 1.2　目的和意义 1 1.3　发展现状 2 ２　整体设计 3 2.1　方案设计思路 3 2.2　方案选择 3 2.3　设计流程 3 2.4　软件环境 4 2.4.1　PROTEUS软