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One of the most important issue that must be addressed in designing communication protocols for wireless sensor networks (WSN) is how to save sensor node energy while meeting the needs of applications. Recent researches have led to new protocols specifically designed for sensor networks where energy awareness is an essential consideration. Internet of Things (IoT) is an innovative ICT paradigm where...
In recent years a number of organizations have experimented control systems for monitoring the environmental parameters of complex buildings, with the goal of improving well-being, optimizing management costs. These solutions are often characterized by sophisticated, costly technologies that allow to monitor the situation even from remote desks, take proper actions whenever any parameter fails to...
This paper proposes to detect event coverage and determines event sources. Generally, an appropriate sensor node is selected as the relay node for gathering and routing sensory data to sink node(s). When sensory data are collected at sink node(s), the event coverage is detected and represented as a weighted graph. Event sources are determined which correspond to the barycenters in this graph. Experiments...
Mobile crowd sensing enables large-scale sensing of the physical world at low cost by leveraging the available sensors on the mobile phones. One of the key factors for the success of mobile crowd sensing is uploading the sensing data to the cloud promptly. Traditional data uploading strategies leveraging whenever available networks may incur extra data cost, impact phone performance,, drain battery...
Hosting multiple application in a shared infrastructure of wireless sensor networks is a trend nowadays. In this article we propose an energy-efficient query optimization mechanism for supporting multiple applications leveraging our cooperative caching mechanism in shared wireless sensor networks. Specifically, query requests are represented as binary strings, which are reduced to a single one for...
Anthropogenic heat is an important component of the urban energy budget and a major contributor to urban heat island (UHI) formation. This study estimated the anthropogenic heat discharge in Los Angeles County, USA, using remote sensing-based energy balance approach and GIS-based approach, respectively. Both approaches simulated the anthropogenic heat in workday and non-workday. Spatial patterns of...
Aiming at farmland information monitoring in remote mountain areas, using wireless sensor networks (WSNs) and unmanned aerial vehicle (UAV) is a good way to collect the information. However, UAV has some limitations, such as energy, that have limitation on the work time of UAV. Therefore, the path planning for UAV is an important factor in order to gather data correctly. Considering the irregularity...
Phase change memory (PCM) has emerged as a promising non-volatile memory technology. Multi-level cell (MLC) PCM, while effectively reducing per bit fabrication cost, suffers from resistance drift based soft errors. It is challenging to construct reliable MLC chips that achieve high performance, high storage density, and low energy consumption simultaneously. In this paper, we propose ReadDuo, a fast...
Effective Building Energy Management Systems (BEMS) are essential for future smart grids with implemented demand-response concept. Building Automation and Control Systems (BACS) can gather information about power and energy consumption as well as control loads in buildings and dynamically interact with the smart grid. A demand value is crucial in organizing this kind of the BEMS with an active demand...
The most popular method in remote data reading from sensors and meters is the time-driven scheme. However, event-driven schemes seem more efficient, as they reduce the number of samples as well as energy consumption, while achieving the same ability of reconstruction of real continuous waveform from discrete samples with the same accuracy. Even greater benefits can be achieved using event-driven with...
As sensors based applications are deployed, security emerges as an essential requirement. One of the critical issues of wireless sensor technology is limited sensors resources including poor sensors batteries. It leads to sensor vulnerability for battery exhausting attacks. Besides, fast exhausting of sensor battery power is not only explained by intrusions. It can be explained by a random failure...
Research indicates that data gathering in wireless sensor networks using unmanned aerial vehicles is a very efficient solution, with promising results. Because wireless sensors and drones are powered with batteries, the energy consumption is a key factor in assessing the efficiency of a data gathering protocol. This paper addresses the energy considerations for a proposed Medium Access Control (MAC)...
The devices running embedded applications tend to be battery-powered, and the energy efficiency of their operations is an important enabler for the wide adoption of the Internet-of-Things. Optimization of energy usage depends on modelling power consumption. A model-based simulation must consider parameters that depend on the device used, the operating system, and the distributed application under...
This paper proposes an innovative strategy to optimize the energy metering in large and energy-consuming plants such as industrial flour mills. The proposed solution deals with ISO 50001 implementation which represents a critical challenge for many companies because the benefits due to improvements in energy management could be potentially canceled by the costs of an Energy Management System (EnMS)...
Wireless sensor networks (WSNs) give us the opportunity to monitor a variety of real time environmental conditions and it helps to make our lifestyle modernized. Usually, every sensor node (SNd) consists of a small battery which is difficult to recharge. The main problems with this WSN are to provide longer lifetime and to maintain the energy consumption level equal for every SNd. When SNds are deployed...
The paper presents the development of a low cost sensor node for street lighting based on the criteria needed by the industry. The function of the sensor node is to sense or detect the motion or movement of an object or a car. The sensor node will act or response when it detects an object moving past its position or location. The street light will turn on and transmit data to another pole. Once the...
In the Internet of Things (IoT), resources' constrained tiny sensors and devices could be connected to unreliable and untrusted networks. Nevertheless, securing IoT technology is mandatory, due to the relevant data handled by these devices. Intrusion Detection System (IDS) is the most efficient technique to detect the attackers with a high accuracy when cryptography is broken. This is achieved by...
Energy conservation and load balancing of the sensor nodes are the important issues considered in the design of Wireless Sensor Network (WSN). By using clustering approach, the energy consumption of nodes in the network can be decreased thereby increasing its lifetime. In various multi-hop cluster-based routing protocols, nodes nearer to the Base Station (BS) exhaust their energy quickly than other...
In wireless sensor networks data gathering is very important task. Nowadays analysis has been targeted on decreasing the energy consumption of the WSN. To solve this drawback the conception of movable sink is presented. In this approach mobile sink gather the inform the static sensors of the network and transfer it to base station. For efficiently gather the data sink's mobility pattern should be...
Providing complete coverage of sensing field as long as possible and maintaining the connectivity between the nodes is the main motto of the Wireless Sensor networks. The proposed system is implemented to provide maximum connectivity and extension in network-lifetime along with providing secured data transmission which is required for many applications. Maximum connected load balance cover tree algorithm...
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