【作者】 安云飞；

【导师】 杨青；

【作者基本信息】 西北农林科技大学 ， 机械设计及理论， 2008， 硕士

【摘要】 “精细农业”的核心是根据作物的实际需要,以最少的投入获取最佳的经济、生态效益,实现农业的可持续发展。然而在整个“精细农业”体系中,面向农业生产者应用的信息获取及通讯技术研究较为匾乏。本文针对当前我国农业生产中信息采集技术相对落后,工作效率较低的现实情况,根据“精细农业”作业中的实际需求,充分利用GSM等成熟的无线通信技术,设计开发了能够对多种农田属性信息进行采集、实现多种数据的融合、并对信息进行处理和无线数传的农田信息传输系统。本研究是高等学校博士学科点专项科研基金项目“基于旱作精细农业的地面遥感研究”(项目编号:200040712018)的一部分。在比较、分析和借鉴现有国内外田间信息获取技术成果的基础上,利用GPS、单片机、GSM、GIS技术,设计了基于GSM网络的田间信息无线远程传输系统,实现了田间信息的实时无线传输;为满足系统的低功耗和方便携带设计要求,建立了单片机作为控制中心、GPS接收机为定位设备,水分测试仪作为田间信息获取传感器,GSM终端模块为信息传输媒体的系统硬件平台;完成了串口电路、液晶显示电路、通讯扩展电路、小键盘电路、电源及稳压电路、GSM模块的系统硬件电路设计。应用模块化设计思想、C语言及汇编语言的相互嵌套,设计了单片机控制模块与GSM模块之间的数据通讯协议,开发了GSM模块与上位机PC机的串行通讯程序;为提高数据后续处理效率,在系统的监控中心部分开发了信息快速转化程序;采用GIS软件完成了田间数据墒情图的制作。对系统的整体设计进行了试验调试,结果表明:本系统可以实现田间信息的远距离无线实时传输。本文对如何进一步完善优化系统功能,提高系统数据传输速度,提出了今后改进的措施。为解决田间信息远距离传输的实时性问题提供了一种有效方法,为田间信息快速采集和处理设备的开发以及精细农业管理决策、智能化变量控制提供了技术支持和信息依据。更多还原

【Abstract】 The core of precision agriculture is to realize the sustainable development of agriculture, and harvest in economic and ecological benefits with the least investment based on the actual needs of crops. However, research on the technology of communication and information needed greatly by producers. This article introduces such a design of system for the farmers. It has three important functions: gathering most kinds of attribute information from farmland, integrating variety kinds of data, processing and propagating information wirelessly.This paper is one part of a research project with the full name of remote sensing and ground research on precision agriculture (Item Number: 200040712018). On the basis of comparison, analysis and information of technology from home and abroad, also with the use of GPS, SCM, GSM, GIS technology, we designed a long-distance transmission system based on the GSM network in the fields, so that we realized the wireless transmission system. In order to meet the low power consumption and portable design requirements, we established a hardware platform with the SCM as a control center, GPS receiver as positioning equipment, water testing as a field sensor, GSM terminal module as the information media. In the end we completed a hardware design of serial circuits, liquid crystal display circuit, the expansion of communications circuits, small keyboard circuit, power and voltage regulator circuit, and GSM module.The test result of the system showed that it is available on the wireless long-distance real-time transmission. The article also analyzed factors that influence speed of transmission and proposed improvement measures. It provides an efficacious device and technical support for the long-distance live transmission, quick gathering of information, decision-making, as well as the intellectualization control of variable factors.更多还原