The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
As Location-Based Services (LBSs) are widely used in smartphone applications, Global Positioning System (GPS) becomes one of the main sources of a smartphone's energy consumption. This paper presents an energy-efficient positioning scheme for smartphones called EEPS (Energy-Efficient Positioning Scheme). EEPS adaptively performs the positioning of a smartphone considering the interesting regions of...
Seismic imaging is the primary technique for subsurface exploration. Traditional seismic imaging techniques rely heavily on manual labor to plant sensors, lay miles of cabling, and then recover the sensors. Often sites of resource or rescue interest may be difficult or hazardous to access. Thus, there is a substantial need for unmanned sensors that can be deployed by air and potentially in large numbers...
Multiple unmanned aerial vehicles (UAVs) are increasingly applied for surveillance tasks such as disaster management and environmental monitoring. Due to limited battery capacity and bounded wireless communication, small-scale UAVs pose fundamental challenges for achieving persistence. We propose an offline path planning algorithm that ensures that the UAVs can always reach the base station to replace...
In mobile user interaction scenarios, gesture recognition applications often process inertial sensor data and run continuously to reduce latency. In this paper, we evaluate real-life efficiency gains of gesture detection on-loading onto microcontroller-based sensor subsystems (sensor hubs). To this end, we implement smartphone wakeup gestures in two ways: (1) running on the Application Processing...
In this paper describes the design, development and construction of a low power consumption sensor node for remote monitoring of the quality environment. The system was developed in the INICTEL-UNI, as part of the project "Telemetry system for monitoring natural resources and the environment in Peru". The sensor node is implemented with themethodology of development iterative and incremental...
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...
Electric Bicycles (EBs) provide a promising sustainable mobility solution. Despite the huge number of research and development activities, the battery pack is still the Achilles' heel of electric vehicles. The dilemma arises between energy content, weight and cost of the batteries. A potential remedy is Regenerative Braking (RB). The main idea of RB is to recover the highest possible amount of kinetic...
Fly-back converter has proved a promising option for effective bidirectional active cell balancing in series connected battery stacks. The stack could be organized as a number of subsets to facilitate an interleaved connection across consecutive subsets at the high-voltage side of transformers so that the voltage rating of components will be reduced accordingly. This structure features expandable...
The number of connected devices — also known as Internet of Things (IoT) — is exponentially increasing. Such sensors and devices also appear in transportation systems giving some intelligence to roads, equipment and vehicles. Nowadays, it is possible to communicate with the environment in order to have better everyday services. Furthermore, the number of registered — public or private — Electric Vehicle...
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...
Wireless sensor networks (WSNs) typically have a massive number of the sensor devices. The battery-powered (BP) sensor devices are the conventional type that has low transmission power due to the limited battery lifetime. The energy harvesting (EH) sensor devices can recharge their battery and therefore may transmit data with high transmission power. However, due to the low transmission power of the...
In the near future, networked wireless devices outnumber traditional electronic appliances. Internet of Things will enable a plethora of new applications in environmental monitoring, agricultural industry, medical diagnostics, security and transportation business, in analysis of equipment performance, conditions, troubleshooting and monitoring. Nowadays, the concept of wireless sensor networks is...
Although microsystems today require less power than ever before, they still cannot fit large enough batteries to sustain them for months or years at a time. Ambient energy is appealing, but only when available, which is often not the case for embedded sensors. Transmitting power wirelessly is more practical in these applications. Tiny receivers, however, capture a small fraction of the power that...
The emergence of wireless technologies and powerful mobile devices has opened up opportunities for real-time remote health monitoring. Smartphones, equipped with wireless connectivity features and powerful processing capabilities, are usually utilized as a data aggregation, transmission and communication nodes. However, the main challenge of unobtrusive continuous sensing remains fast battery depletion...
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...
The futuristic smart cities must have the capabilities to withstand the growing challenges on the urban infrastructure in terms of public safety, resource management, co-operative mobility management and more. To tackle these challenges, the cities are increasingly using next generation information and communication technologies (ICT). A plethora of the ICT based innovations are taking place on a...
In this paper, we investigate a communication system comprised of a wireless sensor which harvests radio frequency (RF) energy from a full-duplex relay node and exploits this energy to transmit data to a destination node via the relay node. Thereby, the relay has two functions. Namely, it transfers RF energy to the sensor via wireless power transfer and relays the information received from the sensor...
Wireless sensor networks (WSN) used to watch changes in an environment of a given field. Coverage, communication and connectivity of the network are the most fundamental challenges in WSN. Sensor nodes are mostly battery operated and expected to work for a longer time without replacing the batteries. The measure of the efficiency of a network usually defined about how efficient in sensing the given...
The aspects of energy conservation and environmental protection are the need of the hour. Hence, the battery electric vehicles came into existence and are operated for various purposes. The most important part of these vehicles is the safety systems. The operation of the safety systems installed in Pedal Assembly, Dash Board, Battery pack, Motor Controller can be made less complicated and faster by...
This paper presents work related to tennis stroke detection and classification. For arm movement acquisition a miniature wearable IMU device, positioned on the player's forearm (right above the wrist) is proposed and presented. The device uses a MEMS-based accelerometer and gyroscope with 6-DOF. For reliable and accurate tennis stroke detection the information obtained from the accelerometer data...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.