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People spend most of their time indoors. This is why indoor air quality is one of the key factors affecting our health, activeness and quality of life. Buildings we are living in should give us comfortable and healthy conditions. Buildings equipped with HVAC-systems often operate using default settings with no automation installed causing problems in indoor air quality and building structures. In...
Wireless Sensor Networks (WSNs) are sensor based networks that are widely used in various critical applications and require the network to have a prolonged lifetime. However, these networks rely on battery-operated sensors that cause the network to be resource-constrained. Therefore, there is a continuous urge to efficiently exploit the network's energy, and henceforth, prolong the network lifetime...
In the process control field, nodes of WSN are deployed to receive the data. Efficient data collection is difficult and it depends on routing, power supply and remote location of node. To overcome the routing problem a new Bio-Inspired mechanism Ant Star Fuzzy (ASF) is proposed. ASF is a reliable and dynamic protocol, capable to provide energy efficient, data collecting routing structure in WSN. Network...
Nowadays, wireless sensor networks attract researchers because of their popular applications in the military, communications, intelligence and medical aspects of vitality. Wireless networks can provide solutions to a lot of major problems in the world as they are low-cost, limited energy services, and there must be mechanisms to raise the efficiency of energy consumption to ensure a long lifetime...
In this paper the energy-efficient method for controlling the transmitters power of wireless sensor networks modules is proposed. Its high efficiency is achieved by the capacitive voltage divider for output stages.
Wireless sensor network is a set of independent transducers with communication infrastructure for recording and monitoring at different locations. The monitoring parameters are energy, temperature, humidity, pressure, direction and speed of the node in the WSN. The main challenges of WSN are efficiency, scalability, heterogeneity, reliability, robustness, privacy and security. Many researchers are...
In this paper, we investigate the relay nodes (RNs) deployment optimization to improve the energy efficiency in wireless sensor networks (WSNs). First, the energy dissipation model of multi-hop relay transmission scheme with random RNs deployment under a given BER requirement is established. Then, we present the optimal RNs deployment to minimize the energy dissipation, which the position of RNs,...
The underwater wireless remote sensors convey messages in a range, where there is no possible human intervention. It is difficult to replace the battery in order to sustain energy in an acoustic environment. Moreover, considering the environment, solar energy cannot be used to recharge for batteries. These sensors are required to be awake for an extended period, taking in consideration that they have...
Since more than a decade, wireless sensor networks is a very attractive field in computer science and networking. Battery management is a crucial issue in the area of wireless sensor networks. The communication between a source node and a destination one may fail if both nodes are located inside a deep shadow-fading zone. Relay-selection strategy has been used in order to extend amplify-and-forward...
IEEE 802.15.4-2015 is the third revision of IEEE 802.15.4 Standard for Low-Rate Wireless Networks. The standard presents Time Slotted Channel Hopping (TSCH) Medium Access Control (MAC) protocol, which provides high reliability and low power consumption to various industrial applications. Despite the effectiveness and the importance of the TSCH protocol, the standard leaves out of its scope in defining...
In wireless sensor networks (WSN), energy consumption is one of the crucial issues. It is very important to conserve energy at each sensor node to prolong a network lifetime. The main challenge in WSN is to develop an energy efficient algorithm to minimize energy consumption during transmitting information from deployed sensors up to the cloud resources. Many researches have been studied the designing...
Several atypical hierarchical routing protocols have been proposed among which grid-based routing protocols are an efficient way of disseminating data towards a mobile sink. The network is partitioned into a virtual equal-sized grids. The proposed protocol, Mode-Switched Grid-based Routing (MSGR) for Wireless Sensor Networks selects one node per grid as the Grid Head. The routing path to the sink...
This paper investigates and optimizes the performance of simultaneous wireless information and power transfer (SWIPT) in wireless sensor networks over Nakagami-$m$ fading channels. In the considered system, there is one mobile reader ($R$ ), which is equipped with one transmit antenna and one receive antenna, and a group of passive sensors. The information delivery includes two stages: 1) $R$ ...
The fast development of wireless sensor networks has made a chance to accumulate and remove enormous measure of data from Wireless Sensor Networks. WSN is efficient instrument that empowers its clients to nearly screen, comprehend and control application handle. WSN consist of huge number of heterogeneous sensor hub spread over the extensive territory and help for wireless sensing and data processing...
Wireless sensor networks are very suitable for remote sensing and monitoring tasks. Sensor nodes being battery operated devices and other limited resources present many challenges for protocols in WSNs. Researches are being continuously conducted with the purpose of combating these issues. Clustering in WSNs aim to distribute the energy load of the nodes by assigning some aggregator nodes or cluster...
A Wireless Sensor Network (WSN) plays a very important role within the future wireless communication domain due to its intelligence, low cost and small size. With the wireless interfaces, these will communicate with one another just in case of cooperative communication in single or multiple hops. Multiple nodes are required for co-operative communication where the Stable Enable Protocol (SEP) and...
WSN(Wireless Sensor Network) is an application specific network. There is no general optimized solution for WSN problems. It depends upon application, resource availability. Structural health monitoring (SHM) using wireless sensor networks has drawn considerable attention in recent years. It is an active area of research that can autonomously and proactively assess the structural integrity of buildings,...
The use of Wireless sensor network is to monitor an area for event detection. The sensor node have some limitation like the sensor node associated with battery power and generally it is not possible to recharge or replace battery of sensor due to large number of sensor node, node distribution in remote, desert or hostile areas etc. The energy consumption of sensor node appears a lot of challenges...
A typical wireless sensor network contains large number of wireless nodes with sensing, data conditioning and communication capabilities [1]. All these processes consume energy for which they have to rely on their onboard batteries. Replacement and recharging of these batteries is difficult. So several strategies have been implemented to compute the energy efficiency[2] of wireless sensor network...
Wireless sensor networks and target tracking are two great parts of research among the researchers, in that some of selective sensor will keep tracking interesting targets under surveillance. In target tracking, sensors are deployed in many applications such as campus security, surveillance, habitat and health care monitoring. Information can be transmitted in an ad hoc multi-hop form via internet...
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