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1、湖北工业大学商贸学院毕业设计I摘 要随着单片机技术的迅速兴起与蓬勃发展，其稳定、安全、高效、经济等优点十分突出。为了实现对温湿度数据的精确采集，采用了一种基于单片机AT89S52为核心的数据采集系统，该系统具有电路简单，功耗低，抗干扰能力强等优点。该系统数据采集部分分别用到DALLas公司的BS18b20单总线数字温度传感器和 Honeywell公司的湿度传感器HIH3610，AD转换模块采用美国国家半导体公司的ADC0809。然后控制部分采用AT89S52单片机作为控制器，负责对采集到得数据进行处理转换，显示采用共阴极七段译码LED显示，用动态扫描显示方式，节省了I/O,降低成本，提高系统效
2、率，同时这些处理后的数据也可以通过串口和电脑连接实现监控，温度测量范围0100，分辨率0.1。本系统包括系统硬件和软件设计,可靠性高，结构简单，实现了对温湿度的自动调节。系统还与上位机相连接，可以设置自动记录温度、湿度的相关的参数，也可以设置每隔一定的时间自动记录，可用在气象的观察方面。同时, 在设备出现故障的情况下, 语音报警和数显电路的结合,能更好地使值班人员了解到当前温湿度的具体数值, 并提醒维护人员及时采取相应措施。关键词：数据采集系统 传感器 单片机 LED 显示 报警系统湖北工业大学商贸学院毕业设计IIAbstractAlong with the rapid rise of sin
3、gle-chip computer technology with vigorous development, its stability, safety, high efficiency, economic advantages is very outstanding. In order to realize the precise collection of temperature and humidity data. Using a AT89S52 as the core based on single chip data acquisition system, this system
4、has a circuit is simple, low power consumption, strong anti-jamming capability, etc. This system data acquisition part of DALLas company BS18b20 respectively used single bus digital temperature sensor and of Honeywell company humidity sensors HIH3610, AD transform module USES ADC0809 national semico
5、nductor companies. And the use the AT89S52 MCU as controller, for processing and converting the data collected .We use the seven segment LED to display the data, with dynamic scan display mode, this not only saving the I / O, reducing the costs,but slso improving efficiency of the system.And the sam
6、e time, these processed data can also be achieved through the serial port to connect with the computer monitor.This system can detect the range of temperature is:0 100 , and its resolution is 0.1 . The system includes hardware and software, high reliability, and the structure is simple.It can also a
7、djustment the temperature and humidity automaticlly. This system is also connected with the host computer, you can set up to record of temperature and humidity automaticlly, and the related parameters can also be recorded in the specifically intervals .This system can be used in meteorological obser
8、vation. Meanwhile, in the case of equipment failure, the man who was on duty can understand the satae through the voice alarm system and display 湖北工业大学商贸学院毕业设计IIImodule better and fast , and to remind the maintain staff taking timely measures.Keywords：Data acquisition sensor system LED display alarm
9、ing system目 录摘 要 .IAbstract .II目 录 .绪 论 .11 温、湿度的检测技术的发展和现状分析 .11.1 温度检测技术 .21.2 湿度检测技术 .21.3 系统简介 .31.3.1 系统功能介绍 .31.3.2 系统设计简介 .31.4 本章小结 .42 方案选择 .42.1 控制模块 .42.2 输入模块 .42.3 显示模块 .42.4 数据采集模块 .52.4.1 温度传感器模块 .52.4.2 湿度传感器模块 .62.5 本章小结 .6湖北工业大学商贸学院毕业设计IV3 硬件设计 .73.1 主控模块 .73.1.1 AT89S52 主要特性 .73.2 显示模块 .103.3 A/D 转换模块 .113.4 温度采集模块 .123.4.1 DS18B20 的性能特点 .123.4.2 高速暂存存储器 .143.5 湿度采集模块 .163.5.1 HTH-3610 主要特性 .163.6 串口通信模块 .173.7 电源模块 .183.8 报警电路 .193.9 总设计硬件图 .204 系统软件设计 .214.1 系统软件框图 .214.2 系统各模块流程图 .
