نتایج جستجو برای: sensor network design

تعداد نتایج: 1686314  

Journal: :journal of ai and data mining 2015
a. ghaffari s. nobahary

wireless sensor networks (wsns) consist of a large number of sensor nodes which are capable of sensing different environmental phenomena and sending the collected data to the base station or sink. since sensor nodes are made of cheap components and are deployed in remote and uncontrolled environments, they are prone to failure; thus, maintaining a network with its proper functions even when und...

In this paper we focus on the application of reinforcement learning to obstacle avoidance in dynamic Environments in wireless sensor networks. A distributed algorithm based on reinforcement learning is developed for sensor networks to guide mobile robot through the dynamic obstacles. The sensor network models the danger of the area under coverage as obstacles, and has the property of adoption o...

Journal: :journal of advances in computer engineering and technology 2015
samaneh nazari dastjerdi hamid haj seyyad javadi

network sensors consist of sensor nodes in which every node covers a limited area. the most common use ofthese networks is in unreachable fields.sink is a node that collects data from other nodes.one of the main challenges in these networks is the limitation of nodes battery (power supply). therefore, the use oftopology control is required to decrease power consumption and increase network acce...

Journal: :journal of ai and data mining 2013
mohammad ahmadi livani mahdi abadi meysam alikhany meisam yadollahzadeh tabari

detecting anomalies is an important challenge for intrusion detection and fault diagnosis in wireless sensor networks (wsns). to address the problem of outlier detection in wireless sensor networks, in this paper we present a pca-based centralized approach and a dpca-based distributed energy-efficient approach for detecting outliers in sensed data in a wsn. the outliers in sensed data can be ca...

Journal: :journal of advances in computer research 0

routing in wireless sensor networks (wsns) is a very challenging task due to the large number of nodes, their mobility and lack of proper infrastructure. since the sensors are battery powered devices, energy efficiency is considered as one of the main factors in designing routing protocols in wsns. most of energy-aware routing protocols are mere energy savers that attempt to decrease the energy...

2005
Martin Leopold

This thesis is placed in the context of the Hogthrob project, whose goal is to monitor key aspects of a sow lifecycle using a sensor network. A sensor network is defined as a collection of sensor nodes equipped with processing and communication capabilities. So far, sensor nodes have been designed using commonly available components chosen to accommodate the needs of a general purpose sensor ne...

Recently, wireless sensor network (WSN) is the popular scope of research. It uses too many applications such as military and non-military. WSN is a base of the Internet of Things (IoT), pervasive computing. It consists of many nodes which are deployed in a specific filed for sense and forward data to the destination node. Routing in WSN is a very important issue because of the limitation of the...

A. Patooghy M. Fazeli M. Kamarei

Wireless Sensor Networks (WSNs) offer inherent packet redundancy since each point within the network area is covered by more than one sensor node. This phenomenon, which is known as sensors co-coverage, is used in this paper to detect unauthenticated events. Unauthenticated event broadcasting in a WSN imposes network congestion, worsens the packet loss rate, and increases the network energy con...

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: :JNW 2014
Rui-hui Mu

In order to improve the traditional wireless sensor network resources shortcomings of single, large power consumption, this paper puts forward the optimization algorithm of wireless sensor network resources. And analyzes the network design of wireless sensor network, optimize the algorithm in the rate and the node power consumption and energy saving method, finally do comparison by using two gr...

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