基于嵌入式Internet与GPRS的农业温室大棚环境参数监测系统研究

发布时间：2018-03-05 03:20

本文选题：嵌入式Internet　切入点：GPRS　出处：《安徽农业大学》2012年硕士论文　论文类型：学位论文

【摘要】：当今社会正在步入网络时代，Internet已经成为重要的信息传输载体。虽然目前，大部分网络终端仍以PC的形式出现，但是作为计算机应用发展趋势——嵌入式系统正在异军突起，并且已经拥有了大量的8、16、32位嵌入式微控制器的应用产品。嵌入式设备接入Internet正在成为一种趋势，并且显示出强大的生命力和广阔的应用前景。近年来，温室大棚种植为提高人们的生活水平带来了极大的便利，得到了迅速的推广和应用。种植环境中的温度、湿度、光照度等环境因子对农作物的生长起着很大的影响。传统的监测方法是在温室大棚中布置大量的传感器节点，通过RS－485总线将采集信息传输到工控机上进行处理，这种方法需要在温室大棚中铺设通信线路来传递监测信息。但这种方法给现场安装和维护带来了不便，同时也难以广域地查询某地温室大棚内的实时环境数据。移动无线通信技术的发展，实现了农业信息与互联网（Internet）“最后1km”的无缝连接，为远程信息的获取、传输与交换提供了有效的途径，，其中GPRS技术因其具有“传输质量高”、“永远在线”和“通信费用低”等优点，得到了广泛的应用。本文基于嵌入式Internet技术，设计并研究了以PIC16F873A为MCU的温室大棚环境参数（温度、湿度、光照度）采集模块，并以GPRS网络方式接入Internet，实现了在Internet客户端对远程温室大棚内环境参数的实时监测。本文研究的主要工作及取得的成果如下： 1.简要论述了嵌入式Internet技术的现状与发展，介绍了各种嵌入式设备接入Internet方案的特点，选定了以GPRS网络技术将嵌入式设备接入Internet的方案。 2.研究设计了以PC机为上位机，以MCU-PIC16F873A为下位机，基于嵌入式Internet的温室大棚监测系统模型。着重研究和设计了以PIC16F873A为控制核心的下位机——温室大棚自动监测节点。 3.研究利用GPRS网络将嵌入式设备以无线方式接入Internet的模式。嵌入式设备以8位单片机为核心，将GPRS模块透明化——构建温室内环境参数的透明传输，实现低档单片机与远程PC机之间的直接交互。本文的研究结果，为嵌入式Internet技术在远程温室大棚环境参数监测的研究中的一次基础性探索，具有一定的实践意义。
[Abstract]:At present, the Internet has become an important carrier of information transmission. Although most of the network terminals still appear in the form of PC, as the development trend of computer application, embedded system is emerging. The embedded device access to Internet is becoming a trend, and has shown a strong vitality and broad application prospects. In recent years, greenhouse planting has brought great convenience to improve people's living standard, and has been rapidly popularized and applied. The traditional monitoring method is to arrange a large number of sensor nodes in the greenhouse and transmit the collected information to the industrial control computer through the RS-485 bus for processing. This method requires laying communication lines in greenhouses to transmit monitoring information. However, this method brings inconvenience to installation and maintenance on the spot. At the same time, it is difficult to query real-time environmental data in a greenhouse in a wide area. With the development of mobile wireless communication technology, the "last 1km" connection between agricultural information and Internet has been realized, so as to obtain remote information. Transmission and exchange provide an effective way, among which GPRS technology has been widely used because of its advantages of "high transmission quality", "always online" and "low communication cost". Based on embedded Internet technology, this paper designs and studies the collection module of greenhouse environment parameters (temperature, humidity, illumination) based on PIC16F873A as MCU. The GPRS network is used to access the Internet to realize the real-time monitoring of the environmental parameters in the remote greenhouse in the Internet client. The main work and achievements of this paper are as follows:. 1. The present situation and development of embedded Internet technology are briefly discussed, the characteristics of various embedded devices accessing Internet schemes are introduced, and the scheme of using GPRS network technology to access embedded devices to Internet is selected. 2. The model of greenhouse greenhouse monitoring system based on embedded Internet with PC as upper computer and MCU-PIC16F873A as lower computer is studied and designed. The automatic monitoring node of greenhouse greenhouse based on PIC16F873A is studied and designed. 3. The mode of wireless access of embedded devices to Internet using GPRS network is studied. The embedded devices take 8-bit single chip microcomputer as the core, and make the GPRS module transparent to construct the transparent transmission of environmental parameters in greenhouse. Realize the direct interaction between the low-grade single-chip computer and the remote PC. The results of this paper are of practical significance for the research of embedded Internet technology in the study of remote greenhouse environmental parameters monitoring.
【学位授予单位】：安徽农业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP274

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