文档介绍：广西大学行健文理学院
毕业设计说明书
题目:基于nRF24L01的无线信息采
集系统设计与实现
学部: 电气信息学部
专业: 电气工程及其自动化

二〇一三年五月
中文摘要
温度、湿度、光强度是工业、农业生产中最常见也是最基本的参数,常常需要对其采集来进行监控。利用微型处理器进行温度、湿度、光强度的采集,数据分析以及实时监控等方法来保证生产环境、提高生产效率、确保产品质量。为了提高数据采集移动性,降低检测采集成本,本课题设计了基于nRF24L01无线传输模块为核心的无线信息采集系统。
本毕业设计分为采集端和接收端两个部分,采集端包括数据采集、无线发射、液晶显示三个模块;接收端包括无线接收、预警值存储、液晶显示、报警四个模块。本文简要介绍了AT89C52、AT24C02、BH1750、DHT11等芯片,以及 nRF24L01无线传输、液晶等模块,并介绍了系统方案的选择。系统的设计包括了硬件和软件的部分设计,还初步介绍了I2C总线。最后,本文还通过实验验证了不同环境下工作的数据采集精度。实验表明,该系统能够完成对环境数据的实时监测,方便人们对外界环境的了解。
关键词:无线传输数据采集实时监测数据存储
Design and Implementation of Wireless Information Collection System based on NRF24L01
Abstract
Temperature, humidity, light intensity is the mon and basic environment parameters in industrial, agricultural production, acquisition of those parameters are necessary for monitoring and control. Microprocessor could be used for acquisition and real-time display, to ensure the production environment, improve production efficiency and ensure product quality. In order to improve system mobility, reduce system cost, nRF24L01 wireless transmission module was adopted as the wireless microprocessor to build up a wireless information collection system in this project.
This graduation project contained two parts: the collection part and the receiver part. The collection part included three modules: data acquisition module, wireless transmitter and LCD display module; the receiver part consisted of four modules: wireless receiver, data storage module, LCD display and key control modules. AT89C52, the nRF24L01 wireless transmission module, AT24C02, BH1750, DHT11 and LCD module were briefly introduced, and then discussed the choice of system solution. System design contains hardware and software design, the I2C bus was also introduction. At last, this article verified the data acquisition precision under different environments. Experiment showed that the system was able plete real-time monitoring of environmental data to provide the knowledge of remote environment.