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Video surveillance is one of the promising applications of the Internet of Things paradigm. We see heterogeneous deployment of sensor platforms in a multi-tier network architecture as a key enabler for energy optimization of battery powered high-quality video surveillance applications. In this paper, we propose a heterogeneous wireless multimedia sensor network (WMSN) prototype composed of constrained...
In the future Internet of Things, many common household devices will have communications interfaces added. We investigate energy-efficient design options for such communications interfaces in the Internet of Things through the example of a simple stock control application that may be commercially implemented. We have measured the power consumption of several popular wireless interfaces - 433 MHz module...
WSN-Wireless sensor networks are greatly in focus for the researchers. The use of WSN is foreseen for bringing massive changes in data gathering, processing and broadcasting. One of the most central design concerns in WSN is energy consumption. Hierarchical routing protocols are best acknowledged in respect to energy efficiency. Mobility based clustering (MBC) provides fruitful packet delivery rate,...
Recently, the technology of Home Energy Management System (HEMS) has expanded for the purpose of reducing energy consumption. This paper presents the development of a smart plug with a wireless Zigbee sensor for measuring power consumption of electrical appliances in the HEMS. Experiments were carried out to evaluate the power consumption of a wireless sensor node in a smart plug using only Zigbee...
Recently, Wireless Sensor Networks (WSNs) and its applications have obtained considerable momentum due to its growing usage in different applications. However, security and power limits of WSNs are still important matters especially during routing since the early beginning of this research due to few of previous studies take into consideration security threats and energy consumption at the same time...
Many research topics in recent years have focused on clustering algorithms as a scalable routing protocol in wireless sensor networks. In these algorithms, by the use of data aggregation techniques and reduction in sensors that should make long distance communications, energy consumption in total network lifetime is decreased. One of algorithms proposed in this field is DECSA. Aiming at the problem...
Wireless Sensor Network (WSN) is still a hottest research topic which can be applied to a lot of new research field such as robotic and smart grid. Its not only used for detecting the new environment but also monitoring any situation which has dynamic variation. However, the sensor node is relied on the battery energy that limited the lifetime of entire network. In this paper, we proposed a novel...
This paper presents a low-power speed-scalable 8bit Successive Approximation Register (SAR) ADC implemented in 0.18-μm CMOS. By designing a compact asynchronous controller and a charge-sharing DAC, the power consumption can be linearly scaled with the conversion speed. A maximum power dissipation of 28.4 μW and 0.019 mm2 total area make this ADC ideal for highly integrated wireless sensor nodes. The...
Security is of critical importance for many potential applications of wireless sensor networks. Broadcasting from base station to nodes is very important in the cases such as distributing secure keys in the network or delivering control commands to nodes. However, the sparse distribution and limited resource of nodes bring difficulties to the efficient and reliable broadcast in wireless sensor networks...
The article focuses on the new problem, which became topical for Wireless Sensor Networks (WSN) with energy harvesting possibility and which is in the realization of system and user data restoring for nodes after unexpected power-downs due to the temporal unavailability of harvested energy. Different possibilities for the creation of the restore point and data restoring after power-downs are described...
We study energy-efficient spectrum sensing and transmission for Cognitive Radio (CR) which jointly determines its sensing and transmission durations. Our results quantify the impact of different power consumption components (i.e., sensing, transmission, and idling) on SU's optimal sensing and transmission durations. Our results also show that with a limited power capacity, SU has to strike a balance...
One of the most important problems in wireless sensor network is to develop a routing protocol that has energy efficiency. In wireless sensor networking, power consumption is important aspect. Therefore it is essential to have routing protocols be designed with energy saving in mind. Energy saving, energy efficiency, energy balance are important technologies to prolong service life of wireless sensor...
Virtual Coordinate System (VCS) based routing schemes for sensor networks characterize each node by a coordinate vector of size M, consisting of distances to each of a set of M anchors. Higher the number of anchors, the higher the coordinate generation cost as well as the communication cost. Identifying an effective set of anchors and encapsulating original VCS's information in a lower dimensional...
Power consumption is an essentially important issue and an interesting challenge to prolong the lifetime of wireless sensor network (WSN). Sensors closer to a sink node have a larger forwarding traffic burden and consume more energy than nodes further away from the sink. The whole operational lifetime of WSN is deteriorated because of such an uneven node power consumption patterns, leading to what...
Wireless Sensor Networks (WSNs) are widely used in various applications for tracking or surveillance purposes. Border security monitoring and terrorist attack prevention are just two of many crucial homeland security applications which rely upon WSN technologies. In these applications, a great amount of sensors powered by batteries are deployed in a particular region. They detect events, process and...
The radio applications in wireless sensor networks where the energy constraint is vital are considered. In this context, the impact of cooperative strategies is analyzed thanks to the realistic power model of a real radio transceiver. A system using a two-antenna source, two one-antenna relays and one-antenna destination is considered. Three types of association strategies of Space time coding and...
The behavior of Wireless Sensor Networks (WSN) is nowadays widely analyzed. One of the most important issues is related to their energy consumption, as this has a major impact on the network lifetime. Another important application requirement is to ensure data sensing synchronization, which leads to additional energy consumption as a high number of messages is sent and received at each node. Our proposal...
In this article the results for study of the influence of different microcontroller hardware parameters on the system overall power consumption and thus also on the system lifetime are presented. The influence of the supply voltage, clock frequency and emplacement of the program in the microcontroller memory for MSP430 microcontroller, which is often used nowadays in Wireless Sensor Networks (WSN)...
In wireless sensor networks where nodes are powered by batteries, it is critical to prolong the network lifetime by minimizing the energy consumption of each node. In this paper, the cooperative multi-input-multi-output (MIMO) and data aggregation techniques are jointly adopted to improve energy efficiency in a cluster based wireless sensor network. Using the energy model derived, the average energy...
The research area of Wireless Sensor Networks (WSN) is growing rapidly. WSN technology is making entrance into new application areas, for example industrial control and Critical Infrastructure (CI) environments. Energy efficiency is a highly prioritized goal of communication protocols and application design for WSN. However, the usage of WSN in both industrial and CI environments are starting to require...
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