基于低功耗设计的便携式温湿度采集器

文档编号:TX198 文档字数:15125,页数:61

摘要
随着电子业的迅速发展和便携式设备的广泛应用，全球能源危机与金融风暴的来临，低功耗设计已成为嵌入式设计的主流思想。温度、湿度是日常生活、工业应用最常关注的两个指标。传统使用温度计，干湿球采集数据的方式已经产生越来越多的弊端，与现代化的工业控制技术不相适应。本课题设计采用一体化数字温湿度传感器SHT10作为数据采集器，主控使用宏晶科技的低压单片机STC89LE52RC。温湿度传感器将采集到的信号送回单片机里面进行相关处理，并在液晶LCD上显示。通过用户的需求，用户可以有选择地将采集到的数据储存在设备中。通过设备使用RS232总线与PC机连接，在PC端使用VC软件编写的上位机，可以读出储存在设备里面的数据，方便用户分析处理。
该仪器定位于便携式产品，因而，是否具备功耗低、寿命长的特性便成为产品能否推广的首要指标。本设计注重地对电源管理、待机功耗等业界关注课题，进行相关讨论与研究，并提出了与用户紧密结合，在系统层面上进行绿色设计的重要性。

关键字：低功耗  便携式  STC89LE52RC  温湿度传感器  上位机

Based on low-power design of the portable temperature and humidity measuring instrument
Abstract
With the rapid development of electronic industry and the commonly use of the portable equipment, low power design becomes the mainstream in embedded design. International financial crisis largely impacts the whole world economy, which make it more necessary to maintain this design thinking. In the most concerning of daily life and industry application, there are two basic norms: temperature and humidity. However, the data gathering process by traditional thermometer and wet and dry bulb hygrometer meets more and more problems, meeting no requirement of modern industry control technology. Thus, this analysis conducts on the design taking the integration digital temperature-humidity sensor SHT10 as data collector. Hongjing Technology’s low-voltage single-chip STC89LE52RC is used as Master Controller, sending collected signal back to single-chip, processing the relevant procedures. At last it is shown on the LCD. User can selectively store the collected data into the equipment with this design. Moreover, with the connection between RS232 bus and PC, WINCC, wrote by VC software in PC, can read the data which is stored in the equipment. So it is very convenient for user to analyze the data.
This equipment focuses on the portable products. Thus, the main point that whether the products can be promoted depends on whether it is low energy consumption and long time use. This study concerns much on the design of power management, standby power and other industry topics, related discussion and research, and proposed a closely integrated with the user in the system level up to the importance of green design.

Key word: low power consumption  portable  STC89LE52RC  WINCC 
temperature and humidity sensors

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目录
第一章 前言 1
第二章 系统结构及功能介绍 2
第三章 方案论证与比较 1
第四章 单元模块设计 4
第五章 系统的软件设计 20
第六章 系统测试 28
第七章 结束语 29
参考文献 30
致谢 31
附录 32

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