本文選題：MSP430F149　切入點：Modbus　出處：《重慶三峽學院》2017年碩士論文　論文類型：學位論文

【摘要】：農(nóng)業(yè)物聯(lián)網(wǎng)的應用將能解決農(nóng)業(yè)生產(chǎn)管理中廣域空間的信息獲取,高效可靠的信息傳輸以及面向不同應用的智能決策等一系列技術問題,是傳統(tǒng)農(nóng)業(yè)升級向現(xiàn)代農(nóng)業(yè)的助推器和加速器。在農(nóng)業(yè)生產(chǎn)過程中,溫度、濕度、光照度、CO2濃度以及其他養(yǎng)分等多種自然環(huán)境因素共同影響著農(nóng)作物的生長,傳統(tǒng)農(nóng)業(yè)生產(chǎn)的粗放式管理中憑借人的感知能力和經(jīng)驗對上述環(huán)境因素進行管理,無法實現(xiàn)最適宜農(nóng)作物生長的環(huán)境條件。為了克服傳統(tǒng)農(nóng)業(yè)管理中存在的問題,現(xiàn)代農(nóng)業(yè)的智能化管理必需擁有一套實用、可靠、可長期監(jiān)測的農(nóng)業(yè)環(huán)境監(jiān)測系統(tǒng)。因此,本文設計了基于MSP430的農(nóng)業(yè)環(huán)境監(jiān)測系統(tǒng),該系統(tǒng)能夠?qū)崟r的準確獲取農(nóng)作物生長中的環(huán)境參數(shù)信息并對這些信息進行遠程監(jiān)測。論文首先詳細闡述本設計的研究背景、農(nóng)業(yè)環(huán)境監(jiān)測技術發(fā)展現(xiàn)狀和未來發(fā)展趨勢,在系統(tǒng)需求分析的基礎上給出了系統(tǒng)的總體結構設計。根據(jù)設計要求,以MSP430F149單片機、CC1101無線收發(fā)芯片為核心,搭載溫度傳感器、濕度傳感器、光照度傳感器、CO2濃度傳感器構建了采集農(nóng)業(yè)生產(chǎn)環(huán)境信息的傳感器硬件節(jié)點,設計了傳感器采集電路及其相關采集程序;結合Modbus傳輸協(xié)議特點,設計了主節(jié)點和從節(jié)點之間的星形組網(wǎng),并完成了主節(jié)點和從節(jié)點之間的無線傳送程序設計,通過CC1101無線收發(fā)芯片實現(xiàn)了基于433MHz的主節(jié)點和從節(jié)點之間的數(shù)據(jù)傳輸,實現(xiàn)了實時環(huán)境數(shù)據(jù)的遠程監(jiān)測和顯示功能。通過多次實驗室環(huán)境下的系統(tǒng)測試,無線傳感器節(jié)點可以正常構建無線網(wǎng)絡,采用Modbus通訊協(xié)議的星形組網(wǎng)實驗能夠正常穩(wěn)定的工作,采集數(shù)據(jù)的精度符合要求,可以可靠地進行數(shù)據(jù)無線傳輸,實現(xiàn)了遠程監(jiān)測的功能。
[Abstract]:The application of the agricultural Internet of things will solve a series of technical problems such as wide area information acquisition, efficient and reliable information transmission and intelligent decision making for different applications in agricultural production management. It is a booster and accelerator for the upgrading of traditional agriculture to modern agriculture. In the process of agricultural production, temperature, humidity, light intensity, CO2 concentration, and other nutrients affect the growth of crops. In the extensive management of traditional agricultural production, the environmental factors mentioned above can not be realized by human perception and experience. In order to overcome the problems existing in traditional agricultural management, the most suitable environmental conditions for crop growth can not be realized. The intelligent management of modern agriculture must have a set of practical, reliable and long-term monitoring agricultural environment monitoring system. Therefore, the agricultural environment monitoring system based on MSP430 is designed in this paper. This system can obtain the environmental parameter information of crop growth in real time and monitor it remotely. Firstly, the research background of this design, the present situation and future development trend of agricultural environmental monitoring technology are described in detail in this paper. Based on the requirement analysis of the system, the overall structure design of the system is given. According to the design requirements, the core of the system is the MSP430F149 single chip microcomputer CC1101 wireless transceiver chip, which carries temperature sensor and humidity sensor. The sensor hardware node for collecting the environmental information of agricultural production is constructed by using the light intensity sensor / CO2 concentration sensor, and the sensor acquisition circuit and its related acquisition program are designed, and the characteristics of the Modbus transmission protocol are combined with the design of the sensor hardware node. The star network between master node and slave node is designed, and the wireless transmission program between master node and slave node is designed. The data transmission between master node and slave node based on 433MHz is realized by CC1101 wireless transceiver chip. The remote monitoring and displaying function of real-time environment data is realized. Through the system test in the laboratory environment, the wireless sensor node can construct the wireless network normally. The star network experiment using Modbus communication protocol can work normally and stably, the precision of collecting data meets the requirement, and the wireless data transmission can be carried out reliably, and the function of remote monitoring is realized.
【學位授予單位】：重慶三峽學院
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP274;S126

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