猪舍无线多媒体传感器网络节点设计与实现
发布时间：2019-05-30 03:04
【摘要】：无线多媒体传感器网络技术是一个多学科高度交叉的研究领域,除了要完成无线传感器对简单环境数据的采集功能外,同时要实现多媒体信息的获取与通信等功能,已成为农业物联网中的重要研究与应用技术,可被广泛应用于农业环境监测与控制监控、环境监测、智能家居等领域。对无线多媒体传感器节点设计,主要包括传感器节点设计和汇聚节点设计。根据节点完成的功能不同,选择不同的功能模块,主要功能模块包括:电源模块、无线通信模块、环境感知模块、图像采集模块、太阳能充电模块、串口转WiFi模块。依据节点不同的硬件系统完成相应的软件设计,主要包括主控芯片的休眠唤醒程序设计、无线通信程序设计、图像采集程序设计。在完成硬件和软件设计的基础上,对系统性能进行测试和试验,主要包括:电压下降与丢包率的关系测试、节点采集频率与节点能耗、通信距离与节点高度的关系、发射功率与通测距离的关系等测试。为进一步降低能耗,延长网络生存周期,将改进的LEACH算法引入到搭建的无线多媒体传感器网络中进行仿真和验证试验。将节点的剩余能量和节点与汇聚节点的距离引入LEACH算法簇首选举中,通过理论推导获得网络中的最优簇头数目,并将获得的最优簇头数目通过K值聚类进行分簇。在Matlab中对网络的节点存活个数、剩余能量等方面进行仿真分析,基于搭建的无线多媒体传感器平台进行验证试验,仿真和验证结果表明本研究提出的LEACH-ED算法在网络的生命周期和网络负载方面具有较高的优越性。并在此基础上对节点进行实地运行测试,结果表明本研究设计的猪舍无线多媒体传感器节点能够很好的完成多媒体信息的采集和传输,满足实际应用。
[Abstract]:Wireless multimedia sensor network technology is a highly interdisciplinary research field. In addition to the acquisition function of wireless sensor to simple environment data, it is necessary to realize the acquisition and communication of multimedia information. It has become an important research and application technology in agricultural Internet of things, which can be widely used in agricultural environmental monitoring and control monitoring, environmental monitoring, smart home and other fields. The design of wireless multimedia sensor node mainly includes sensor node design and sink node design. According to the different functions of the node, different functional modules are selected. The main functional modules include: power module, wireless communication module, environment sensing module, image acquisition module, solar charging module, serial port to WiFi module. According to the different hardware systems of the nodes, the corresponding software design is completed, including the dormant wake-up program design of the main control chip, the wireless communication program design and the image acquisition program design. On the basis of hardware and software design, the performance of the system is tested and tested, including the relationship between voltage drop and packet loss rate, the relationship between node acquisition frequency and node energy consumption, and the relationship between communication distance and node height. The relationship between transmission power and measured distance is measured. In order to further reduce energy consumption and prolong the network life cycle, the improved LEACH algorithm is introduced into the built wireless multimedia sensor network for simulation and verification experiments. The residual energy of the node and the distance between the node and the sink node are introduced into the cluster head election of LEACH algorithm. The optimal number of cluster heads in the network is obtained by theoretical derivation, and the optimal number of cluster heads is grouped by K-valued clustering. The number of nodes and the remaining energy of the network are simulated and analyzed in Matlab, and the verification experiments are carried out based on the built wireless multimedia sensor platform. The simulation and verification results show that the LEACH-ED algorithm proposed in this paper has high advantages in network life cycle and network load. On this basis, the field operation test of the node is carried out, and the results show that the wireless multimedia sensor node of the pigsty designed in this study can complete the collection and transmission of multimedia information, and meet the practical application.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP212.9;TN919.8
本文编号：2488458
[Abstract]:Wireless multimedia sensor network technology is a highly interdisciplinary research field. In addition to the acquisition function of wireless sensor to simple environment data, it is necessary to realize the acquisition and communication of multimedia information. It has become an important research and application technology in agricultural Internet of things, which can be widely used in agricultural environmental monitoring and control monitoring, environmental monitoring, smart home and other fields. The design of wireless multimedia sensor node mainly includes sensor node design and sink node design. According to the different functions of the node, different functional modules are selected. The main functional modules include: power module, wireless communication module, environment sensing module, image acquisition module, solar charging module, serial port to WiFi module. According to the different hardware systems of the nodes, the corresponding software design is completed, including the dormant wake-up program design of the main control chip, the wireless communication program design and the image acquisition program design. On the basis of hardware and software design, the performance of the system is tested and tested, including the relationship between voltage drop and packet loss rate, the relationship between node acquisition frequency and node energy consumption, and the relationship between communication distance and node height. The relationship between transmission power and measured distance is measured. In order to further reduce energy consumption and prolong the network life cycle, the improved LEACH algorithm is introduced into the built wireless multimedia sensor network for simulation and verification experiments. The residual energy of the node and the distance between the node and the sink node are introduced into the cluster head election of LEACH algorithm. The optimal number of cluster heads in the network is obtained by theoretical derivation, and the optimal number of cluster heads is grouped by K-valued clustering. The number of nodes and the remaining energy of the network are simulated and analyzed in Matlab, and the verification experiments are carried out based on the built wireless multimedia sensor platform. The simulation and verification results show that the LEACH-ED algorithm proposed in this paper has high advantages in network life cycle and network load. On this basis, the field operation test of the node is carried out, and the results show that the wireless multimedia sensor node of the pigsty designed in this study can complete the collection and transmission of multimedia information, and meet the practical application.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP212.9;TN919.8
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