温湿度智能监控系统的设计毕业设计成品精要.doc

摘要 在大型的生产车间、广场、仓库等环境监测传感器的应用日益增大，尤其是温度和湿度两个数据的监测最为典型，随之而来的就是对检测数据的显示及统一的监控系统的产生。然而，目前的温湿度监控管理方法还存在效率低、浪费人工、采集技术指标低，精度不够等一些问题。 本设计是为了实现用单片机进行温湿度测量与控制，通过在LCD上实时显示室内环境的温度和相对湿度。系统采用了集温湿度传感器A/D转换器为一体的DHT90传感器芯片，通过单片机AT89C52进行显示。其它模块包括了时间电路和报警电路，实时显示测定的值，并且在温湿度超过设定值时激活报警。 本文介绍了基于ATMEL公司的AT89C52系列单片机的温湿度实时测量、控制系统以及显示系统的设计，介绍了硬件结构原理，并分析了相应的软件的设计及其要点，包括软件设计流程及其程序实现。 系统结构尽量趋于简单、实用，以提高测量精度和效率，降低成本。 关键词：温湿度测控 DHT90传感器 AT89C52单片机 LCD  Abstract In the large-scale production workshop, square, warehouse and other environmental monitoring sensor application is increasing, especially the temperature and humidity of the two data monitoring is the most typical, followed by the detection of data display and unified monitoring system. However, there are some problems such as low efficiency, waste of manpower, low technical indicators, and some problems in the current temperature and humidity monitoring management. This design is to realize the temperature and humidity measurement and control with single chip microcomputer, through real-time display of indoor environment temperature and relative humidity in LCD. The system uses a set of temperature and humidity sensor A/D converter as one of the DHT90 sensor chip, through the single-chip AT89C52 display. Other modules include the time circuit and alarm circuit, real-time display of the measured value, and when the temperature and humidity exceed the set value of the activated alarm. This paper introduces the design of the temperature and humidity measurement, control system and display system of AT89C52 series single-chip microcomputer based on ATMEL, introduces the principle of hardware structure, and analyzes the design of the software. System structure is simple, practical, in order to improve the measurement accuracy and efficiency, reduce costs. Keywords: temperature and humidity control, DHT90, LCD, AT89C52  一、本课题所涉及的问题在国内(外)的研究现状综述? 本课题内容主要是设计和构建粮仓温度湿度监控系统，主要用于实时监测仓库中的温湿度，并能有效地对仓库的温湿度进行自动监测调节及超温报警。? 本系统主要运用于粮食仓库中。我们知道粮食在存储期间，