基于stc89c52单片机的粮仓温湿度的系统设计-本科毕设论文.doc

学号： 常 州 大 学 毕业设计（论文） （2012届） 题 目 学 生 学 院 专业班级 校内指导教师 专业技术职务 校外指导老师 专业技术职务 二○  基于STC89C52单片机的粮仓温湿度的系统设计 温湿度作为一个重要的物理量是粮食仓库中最普遍、最重要的工艺参数之一。随着科学技术的不断更新温湿度测量的准确性要求不断提高,因此温湿度检测也成为一个重要的研究课题。 STC89C52是一种低功耗、高性能CMOS8位微控制器，具有 8K可编程Flash 存储控器。DHT11数字温湿度传感器是一款含有已校准数字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与卓越的长期稳定性。 关键词:温湿度；STC89C52；DHT11传感器；  Temperature and Humidity of Granary System design based on STC89C52 Microcontroller Abstract: Temperature and humidity as an important physical quantity, is one of the most common food warehouse, the most important process parameters. As the times progress, social development, science and technology constantly updated, the accuracy of measurement of temperature and humidity requirements continue to improve, so the temperature and humidity testing has also become an important research topic. The design is based on single-chip digital signal high sensitivity and controllability, as well as digital temperature and humidity sensors can produce the performance of digital signal, design a control system STC89C52 as the core, Including the microcontroller, temperature and humidity testing, keyboard and display, the alarm circuit, system software, and other parts of the design. STC89C52 a low-power, high performance CMOS8 bit microcontroller with 8K programmable Flash storage controller. DHT11 digital temperature and humidity sensor is a composite Sensor contains a calibrated digital signal output of the temperature and humidity. Application of a dedicated digital modules collection technology and the temperature and humidity sensing technology, to ensure that products with high reliability and ex