基于aduc812单片机的温湿度检测仪毕业设计（论文）.doc

基于ADuC812单片机的温湿度检测仪 摘 要 环境中的温湿度指标是两个重要的物理参数，在许多领域对温湿度测量要求高的场合，都需要精确测量温湿度。针对这一情况，设计一种可靠、实用的检测仪器显得非常重要。 基于ADuC812单片机的湿度检测仪可以实时、准确的测量环境中的温度和相对湿度，并能通过键盘输入设置湿度上下限的值以及进行语音报警，其附有的通信接口可方便地实现与计算机的实时通信。 在整个设计过程中，我们综合参考了国内外同类产品的设计方法，结合用户的实际需求，经研究之后，硬件部分的设计采用了以带有A/D转换器的ADuC812单片机为核心控制器件，以高灵敏度AD590电流输出型二端式集成温度传感器为温度数据获取元件和湿度传感器THS11采集环境中的相对湿度，模拟输入接口接入键盘实现人机交换功能，并用LCD作为显示设备的硬件设计方案。此外，在通信方面使用RS-232串行数据接口与计算机进行数据传输。软件部分则采用采用模块化的方法将其分成几个部分，然后逐模块设计程序，用汇编语言来实现，最终使各部分结合起来协调工作。 该温湿度检测仪的设计，能够完成的温湿度检测，实现主要的温湿度检测功能。 关键词：ADuC812单片机,传感器，LCD，温湿度 MEASURING INSTRUMENT FOR HUMIDITY BASEED ON ADuC812 MICROCONTROLLER ABSTRACT The temperature and relative humidity of environmental condition are two important physical parameters, in industry department as well as the laboratory and so on the petrification, metallurgy, electric power, drugs manufacture, cement requests the high situation to the temperature and relative humidity survey, it appears very important to develop a reliable and practical instrument that can examine the relative humidity of environment. Based on the ADuC812 microcontroller humidity instrument be able to accurate examine environment temperature and the relative humidity on real-time, and user can set the humidity examinant’s range, so it will give a when the real humidity beyond the limiting. It attaches the correspondence connection may conveniently the realization and the computer real-time communication. In the whole design process, we have synthesized referred to the domestic and foreign similar products design method, the union users demand, as well as high Xingjian compared to and so on target, after research, used take included A/D the switch the ADuC812 microcontroller as the core control component, take the high sensitivity warm sensor AD590 as the data gain part and take the humidity sensor THS11 as the data gain part, and took the graphic display device with LCD the hardware design proposal. In addition, has used the RS-232 serial data connection in the serial co