نتایج جستجو برای: sensor nodes

تعداد نتایج: 304328  

A.A. Baradaran

In this paper, an algorithm , based on genetics and auxiliary nodes, to reduce energy consumption in wireless sensor networks has been presented. In this research, by considering some parameters as energy and distance, a target function has been created, which is more optimum comparing to other methods. In this research cluster head is selected by genetic algorithm. In RAWSN algorithm a new tec...

Key distribution is an important problem in wireless sensor networks where sensor nodesare randomly scattered in adversarial environments.Due to the random deployment of sensors, a list of keys must be pre-distributed to each sensor node before deployment. To establish a secure communication, two nodes must share common key from their key-rings. Otherwise, they can find a key- path in which ens...

Wireless Sensor Networks (WSNs) comprising of tiny, power-constrained nodes are getting very popular due to their potential uses in wide applications like monitoring of environmental conditions, various military and civilian applications. The critical issue in the node is energy consumption since it is operated using battery, therefore its lifetime should be maximized for effective utilization ...

Journal: :journal of advances in computer research 2014
reza mohammadi seyyed yahya nabavi reza javidan

underwater acoustic wireless sensor network (uawsn) use acoustic signalsto transmit data. acoustic signals in underwater environment have high bit errorrate, long propagation delay and limited bandwidth. another constraint in uwasnis energy. due to these constraints, design of energy and bandwidth efficient andpropagation delay aware mac protocol is a great challenge in uwasn.underwater sensor ...

Journal: :international journal of smart electrical engineering 0
iman khandani electrical engineering department, islamic azad university, central tehran branch reza sabbaghi-nadooshan electrical engineering department, islamic azad university, central tehran branch fardad farokhi electrical engineering department, islamic azad university, central tehran branch

wireless sensor networks(wsn) have unique properties that distinguished them from other wireless networks and have special challenges. not-chargeable, not-changeable and limited power supplies of sensor nodes is the most important challenge of this networks, and if the power supply of node expired, a part of data maybe lost. because of the importance of covers in wireless sensors, in this work ...

Hooman Kashaniana Negar Chitgar,

The industrial Internet of Things (IoT) is aiming to interconnect humans, machines, materials, processes and services in a network. Wireless Sensor Network (WSN) comprises the less power consuming, light weight and effective Sensor Nodes (SNs) for higher network performance. Radio Frequency Identification (RFID) and sensor networks are both wireless technologies that provide limitless future po...

ژورنال: محاسبات نرم 2013

To increase reliability and fault tolerance in wireless sensor network, using spare nodes is a useful method. In this article, we survey the influence of using single-type and multi-type spare nodes on the fault tolerance in the low density. To achieve this, we use single-type and multi-type spare nodes and construct the network reliability graph for one, two and three-node densities. Then, we ...

2006
Marcos Augusto M. Vieira Adriano B. da Cunha Diógenes Cecilio da Silva

Wireless sensor networks are networks of large quantities of compact microsensors with wireless communication capability. Emerging applications of data gathering range from the environmental to the military. Architectural challenges are posed for designers such as computational power, energy consumption, energy sources, communication channels and sensing capabilities. This work presents the cur...

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