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The boundary detection of continuous objects has become an important research challenge in Wireless Sensor Networks (WSNs), where improving the accuracy of boundary and reducing the energy consumption are the primary factors to be considered. To address this challenge, this article proposes a tow-stage boundary area detection scheme in duty-cycled WSNs, and sensor nodes are deployed in a dense fashion...
Wireless Body Sensor Networks (WBSNs) are a low-cost solution allowing remote patient monitoring and continuous health assessment, thus reducing healthcare expenditure. In such networks, sensor nodes periodically collect vital signs and send them to the coordinator for fusion. However, sensor nodes have limited energy and processing resources and transmission is the most power-hungry task. In this...
Several monitoring oriented applications in Wireless Sensor Networks (WSNs) are characterized by the necessity of two data-reporting modes: time-driven and event-driven. The former is used mainly for constantly supervising an area and the latter for event detection and target tracking. By switching between both modes a WSN can improve its energy-efficiency and accuracy of measurement processes, compared...
Low power sensors are emerging to up held the current edge technology. Sensor devices linked to each other via short ranged radios form wireless sensor networks (WSN). In recent development, WSNs are utilized for Internet of Things (IoT) applications like monitoring, automation and control, etc. The data collected is dumped on internet cloud so that easy access to data from remote place is possible...
A large number of sensor nodes are deployed to remote locations and left unattended for a long time in wireless sensor network applications. When a battery-powered sensor node depletes its energy, it is assumed as “dead” and recharging or replacing the battery is not possible in most of the applications. Lifetime of the wireless sensor network depends on the efficient use of available restricted energy...
In Wireless Sensor Networks (WSNs), the efficient use of sensor energy is a crucial point to extend the network lifetime and has been the focus of many industrial and academic researchers, since it is not a trivial task. Several methodologies for clustering, routing and energy saving in WSNs are available in the literature. However, the lack of detailed and crucial information from the analyzed studies...
In recent years, the research about energy waste and CO2 emission reduction has gained a strong momentum, also pushed by European and national funding initiatives. The main purpose of this large effort is to reduce the effects of greenhouse emission, climate change to head for a sustainable society. In this scenario, Information and Communication Technologies (ICT) play a key role. From one side,...
A radial increment WSN routing algorithm(RIRA) is proposed to reduce energy consumption and improve transmission efficiency caused by complex environment and narrow tunnel of deep mine, in which the wired network layout is limited. Multi-hop routing methods between clusters can reduce energy consumption. A weighting formula is constructed to select cluster heads, the greater the weight, the more likely...
WSN for railway environment monitoring is a typical linear wireless sensor network. In order to improve the poor robustness of single path routing protocol, this paper proposes an energy-efficient multi-path routing protocol suitable for narrow strip area along the railway. In this protocol, "One-step-hop" transmission and "two-step-hop" transmission are designed to send packets...
The world's non-renewable energy resources are depleting whilst the atmospheric carbon concentration is increasing. In order to arrest this, it has become mandatory that energy conservation measures be implemented. The Wireless Residential Power Monitoring System is a user-friendly package which monitors energy consumption within households with 100–240 V AC levels and assists with demand side management...
Wireless sensor networks (WSNs) consist of energy limited sensor nodes, which limits the network lifetime. Such a lifetime can be prolonged by employing the emerging technology of wireless energy transfer (WET). In WET systems, the sensor nodes can harvest wireless energy from wireless charger, which can use energy beamforming to improve the efficiency. In this paper, a scenario where dedicated wireless...
Underwater Wireless Sensor Network (UWSNs) have been proposed to monitor underwater regions such as seas and oceans. A typical example of an UWSN consists of a set of underwater sensor nodes and a set of sink nodes that are deployed at the sea surface. Using acoustic transmission, the sensors send their collected data to at least one of the sinks in what is known as the anycast transmission problem...
In large-scale industrial wireless sensor networks (IWSNs), some nodes are likely to be critical to maintain group-connectivity. Prior studies on topology control with critical nodes (CNs) mainly focus on network connectivity inside a group. It is non-trivial to maintain group-connectivity without considering any CNs in group-based IWSNs. Sleep scheduling is one of the approaches to save residual...
The lifetime of a wireless sensor network (WSN) is limited by the lifetime of the individual sensor nodes. A promising technique to extend the lifetime of the nodes is wireless energy transfer. The WSN lifetime can also be extended by exploiting the redundancy in the nodes' deployment, which allows the implementation of duty-cycling mechanisms. In this paper, the joint problem of optimal sensor node...
To solve the problem of high-energy-consumption of Wireless Sensor Network (WSN) nodes and short WSN lifetime, considering the practical underground environment of coal mine, this paper proposes a novel event-driven WSN in the coal mine system. The paper also discusses different working patterns of the proposed event-driven WSN, and switching methods between them. According to the safety regulation...
The reliability of power system matters vital to people's livelihood. Establish insulator leakage current on-line monitoring system can greatly improve reliability of the power system and reduce the maintenance cost of the power system. In this paper, a data routing algorithm for insulator leakage current monitoring system is proposed. Firstly, through to analysis the distribution of insulator in...
Wireless Sensor Network (WSN) comprises a large number of tiny sensor nodes. These nodes are intelligent of sensing and monitoring the environmental or physical condition like temperature, sound, pressure, motion, etc. and communicating with other nodes. Sensor nodes in WSN have limited power and energy constraint hence it becomes necessary to efficiently use these resources. Energy consumption is...
Wireless Sensor Networks in real world context are per se error-prone; motes can be lost, destroyed, corrupted, or stolen. Some scenarios demand a high level of confidentiality and integrity so that an attacker cannot access or alter the secret data. Other setups may require a high level of redundancy so that data from many motes can be recovered by only collecting a few. In this paper we show how...
Internet of things (IoT) integrate the technologies such as sensing, communication, networking and cloud computing in wide range monitoring zone. For applications of IoT, the most appropriate monitoring network is wireless sensor networks (WSN). It is most important to develop energy efficient cluster head (CH) selection scheme to increase the network lifetime of WSNs. It is most crucial to save the...
Health Monitoring is a primary application of the WSN (Wireless Sensor Network). In Wireless Health Monitoring exact data transmission and transmission time are important points for good health monitoring. In Wireless Sensor Network, wireless devices contain good range and capability. In Previous work [17], they are using parallel offloading for wireless Health data transmission. In this Paper, we...
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