scholarly journals Reliability Analysis of Wireless Sensor Network for Smart Farming Applications

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7683
Author(s):  
Marcantonio Catelani ◽  
Lorenzo Ciani ◽  
Alessandro Bartolini ◽  
Cristiano Del Rio ◽  
Giulia Guidi ◽  
...  

Wireless Sensor Networks are subjected to some design constraints (e.g., processing capability, storage memory, energy consumption, fixed deployment, etc.) and to outdoor harsh conditions that deeply affect the network reliability. The aim of this work is to provide a deeper understanding about the way redundancy and node deployment affect the network reliability. In more detail, the paper analyzes the design and implementation of a wireless sensor network for low-power and low-cost applications and calculates its reliability considering the real environmental conditions and the real arrangement of the nodes deployed in the field. The reliability of the system has been evaluated by looking for both hardware failures and communication errors. A reliability prediction based on different handbooks has been carried out to estimate the failure rate of the nodes self-designed and self-developed to be used under harsh environments. Then, using the Fault Tree Analysis the real deployment of the nodes is taken into account considering the Wi-Fi coverage area and the possible communication link between nearby nodes. The findings show how different node arrangements provide significantly different reliability. The positioning is therefore essential in order to obtain maximum performance from a Wireless sensor network.

Author(s):  
А.М. Заяц ◽  
А.А. Логачев

Для мониторинга состояния лесов и лесных пожаров принято использовать различные технические наземные, авиационные и космические средства. Однако применение данных средств часто затрудняется отсутствием в лесу доступа к источникам электропитания и информационным сетям. Единственной на сегодняшний день технологией, позволяющей успешно решать задачи мониторинга состояния лесов и лесных пожаров, обеспечивающей длительное использование системы без необходимости замены ее устройств из-за отсутствия энергообеспечения и их технического обслуживания непосредственно в местах развертывания сети, является технология беспроводных сенсорных сетей. Беспроводная сенсорная сеть - это совокупность миниатюрных необслуживаемых распределенных в пространстве вычислительных устройств, которые снабжены сенсорами и приемопередатчиками сигналов, работающих в радиодиапазоне и образующих самоорганизующуюся систему сбора, обработки и передачи информации. Применимо к мониторингу лесов наиболее подходящей топологией беспроводной сенсорной сети является ячеистая топология, в которой все сенсоры обладают функциями маршрутизации. Маршрутизация позволяет обеспечить возможность самовосстановления сетей в случае выхода из строя некоторых сенсоров при лесных пожарах или других негативных воздействиях, что позволяет достаточно быстро переформировать сеть с новой конфигурацией. Информация, собираемая сетью, передается на шлюз, который выполняет координирующие функции по организации работы беспроводной сенсорной сети, и связан с корпоративной сетью с помощью проводной или беспроводной связи. Благодаря способности узлов ретранслировать сообщения, обеспечивается значительная площадь покрытия территории даже при малой мощности передатчиков, поскольку информация передается от одних сенсоров к другим по цепочке, и в итоге ближайшие к узлу сенсоры сбрасывают ему всю аккумулированную информацию. Предлагается использовать геоинформационные технологии, обеспечивающие разработку специализированных решений для визуализации и анализа данных, что позволит пользователю осуществлять оперативный мониторинг лесных территорий и прогнозировать неблагоприятные воздействия, в том числе лесные пожары. Данная информационная система мониторинга лесов и лесных пожаров с использованием беспроводных сенсорных сетей эффективно и с малыми затратами обеспечивает решение задач контроля труднодоступных лесных территорий, устойчива к отказу отдельных узлов по различным причинам, что позволяет использовать и эксплуатировать сеть на лесных территориях с различными ландшафтными, таксационными и антропогенными параметрами. Monitoring of the state of forests and wildfires is common to use a variety of technical ground, air and space assets. However, using these funds is often hampered by lack of access to sources of electricity supply and information networks. The only technology solution of the problem of monitoring forests and wildfires, which provides long-term use of the system without having to change its device due to lack of energy and maintenance directly in the field of network deployment is a wireless sensor networks. Wireless sensor network - a set of miniature independent distributed computing devices, which are equipped with sensors and transceivers operating in the radio range and forming a self-organizing system of collecting, processing and transmitting information. Applicable to the monitoring of forests the most appropriate topology of wireless sensor network is a mesh topology in which all sensors have routing functions. Routing provides the possibility of self-healing network in case of failure of some sensors in case of wildfires or other negative influences that allows one to quickly rebuild the network with the new configuration. The information collected by the network is transmitted to the gateway, which performs coordinating functions related to the organization of a wireless sensor network and is connected to the corporate network via a wired or wireless connection. The ability of nodes to relay messages provides significant area coverage area, even at low power transmitters, because the information is transferred from one sensor to another, and finally coming to a gateway sensor and dump all accumulated information. We suggested to use GIS technology to ensure the development of specialized solutions for the visualization and analysis of data, allowing the user to perform real-time monitoring of forest areas and to predict hazards. The information system of forest and wildfires monitoring with the use of wireless sensor networks efficiently and at low cost provides a solution to control tasks for inaccessible forest areas and can be resistant to failure of individual nodes, for various reasons, so it can be used to operate the network in forest areas with different landscape, biometrical and anthropogenic parameters.


2014 ◽  
Vol 51 (4) ◽  
pp. 971-993 ◽  
Author(s):  
Xavier Silvani ◽  
Frédéric Morandini ◽  
Eric Innocenti ◽  
Sylvestre Peres

2016 ◽  
Vol 12 (10) ◽  
pp. 86 ◽  
Author(s):  
Jingyi Bo ◽  
Yubin Wang ◽  
Na Xu

<span style="font-family: 'Times New Roman',serif; font-size: 10pt; -ms-layout-grid-mode: line; mso-fareast-font-family: SimSun; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">Combining the characteristics of wireless sensor network, the ant colony algorithm is applied to a wireless sensor network, and a wireless sensor network route algorithm based on energy equilibrium is proposed in this paper. This algorithm takes the energy factor into the consideration of selection of route based on probability and enhanced calculation of information so as to find out the optimal route from the source node to the target node with low cost and balanced energy, and it prolongs the life cycle of the whole network</span><span style="font-family: 'Times New Roman',serif; font-size: 10pt; mso-fareast-font-family: SimSun; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">.</span>


The emergence of sensor networks as one of the dominant technology trends in the coming decades has posed numerous unique challenges on their security to researchers. These networks are likely to be composed of thousands of tiny sensor nodes, which are low-cost devices equipped with limited memory, processing, radio, and in many cases, without access to renewable energy resources. While the set of challenges in sensor networks are diverse, we focus on security of Wireless Sensor Network in this paper. First, we propose some of the security goal for Wireless Sensor Network. To perform any task in WSN, the goal is to ensure the best possible utilization of sensor resources so that the network could be kept functional as long as possible. In contrast to this crucial objective of sensor network management, a Denial of Service (DoS) attack targets to degrade the efficient use of network resources and disrupts the essential services in the network. DoS attack could be considered as one of th


Sensors ◽  
2018 ◽  
Vol 18 (3) ◽  
pp. 820 ◽  
Author(s):  
Alessandro Pozzebon ◽  
Irene Cappelli ◽  
Alessandro Mecocci ◽  
Duccio Bertoni ◽  
Giovanni Sarti ◽  
...  

Author(s):  
Bin Lin

The Internet of Things is another information technology revolution and industrial wave after computer, Internet and mobile communication. It is becoming a key foundation and an important engine for the green, intelligent and sustainable development of economic society. The new networked intelligent production mode characterized by the integration innovation of the Internet of Things is shaping the core competitiveness of the future manufacturing industry. The application of sensor network data positioning and monitoring technology based on the Internet of Things in industry, power and other industries is a hot field for the development of the Internet of Things. Sensor network processing and industrial applications are becoming increasingly complex, and new features have appeared in the sensor network scale and infrastructure in these fields. Therefore, the Internet of Things perception data processing has become a research hotspot in the deep integration process between industry and the Internet of Things. This paper deeply analyzes and summarizes the characteristics of sensor network perception data under the new trend of the Internet of Things as well as the research on location monitoring technology, and makes in-depth exploration from the release and location monitoring of sensor network perception data of the Internet of Things. Sensor network technology integrated sensor technology, micro-electromechanical system technology, wireless communication technology, embedded computing technology and distributed information processing technology in one, with easy layout, easy control, low power consumption, flexible communication, low cost and other characteristics. Therefore, based on the release and location monitoring technologies of sensor network data based on the Internet of Things in different applications, this paper studies the corresponding networking technologies, energy management, data management and fusion methods. Standardization system in wireless sensor network low cost, and convenient data management needs, design the iot oriented middleware, and develops the software and hardware system, the application demonstration, the results show that the design of wireless sensor network based on iot data monitoring and positioning technology is better meet the application requirements, fine convenient integration of software and hardware, and standardized requirements and suitable for promotion.


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