基于MSP430的农业环境监测仪设计与实现

发布时间：2018-03-22 09:54

本文选题：MSP430F149　切入点：Modbus　出处：《重庆三峡学院》2017年硕士论文　论文类型：学位论文

【摘要】：农业物联网的应用将能解决农业生产管理中广域空间的信息获取,高效可靠的信息传输以及面向不同应用的智能决策等一系列技术问题,是传统农业升级向现代农业的助推器和加速器。在农业生产过程中,温度、湿度、光照度、CO2浓度以及其他养分等多种自然环境因素共同影响着农作物的生长,传统农业生产的粗放式管理中凭借人的感知能力和经验对上述环境因素进行管理,无法实现最适宜农作物生长的环境条件。为了克服传统农业管理中存在的问题,现代农业的智能化管理必需拥有一套实用、可靠、可长期监测的农业环境监测系统。因此,本文设计了基于MSP430的农业环境监测系统,该系统能够实时的准确获取农作物生长中的环境参数信息并对这些信息进行远程监测。论文首先详细阐述本设计的研究背景、农业环境监测技术发展现状和未来发展趋势,在系统需求分析的基础上给出了系统的总体结构设计。根据设计要求,以MSP430F149单片机、CC1101无线收发芯片为核心,搭载温度传感器、湿度传感器、光照度传感器、CO2浓度传感器构建了采集农业生产环境信息的传感器硬件节点,设计了传感器采集电路及其相关采集程序;结合Modbus传输协议特点,设计了主节点和从节点之间的星形组网,并完成了主节点和从节点之间的无线传送程序设计,通过CC1101无线收发芯片实现了基于433MHz的主节点和从节点之间的数据传输,实现了实时环境数据的远程监测和显示功能。通过多次实验室环境下的系统测试,无线传感器节点可以正常构建无线网络,采用Modbus通讯协议的星形组网实验能够正常稳定的工作,采集数据的精度符合要求,可以可靠地进行数据无线传输,实现了远程监测的功能。
[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.
【学位授予单位】：重庆三峡学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP274;S126

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