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Internet of Things

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https://www.readbyqxmd.com/read/27929139/a-piezoelectric-micro-generator-worked-at-low-frequency-and-high-acceleration-based-on-pzt-and-phosphor-bronze-bonding
#1
Gang Tang, Bin Yang, Cheng Hou, Guimiao Li, Jingquan Liu, Xiang Chen, Chunsheng Yang
Recently, piezoelectric energy harvesters (PEHs) have been paid a lot of attention by many researchers to convert mechanical energy into electrical and low level vibration. Currently, most of PEHs worked under high frequency and low level vibration. In this paper, we propose a micro cantilever generator based on the bonding of bulk PZT wafer and phosphor bronze, which is fabricated by MEMS technology, such as mechanical chemical thinning and etching. The experimental results show that the open-circuit output voltage, output power and power density of this fabricated prototype are 35 V, 321 μW and 8664 μW cm(-3) at the resonant frequency of 100...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922657/social-aware-event-handling-within-the-fallrisk-project
#2
Femke De Backere, Jan Van den Bergh, Sven Coppers, Shirley Elprama, Jelle Nelis, Stijn Verstichel, An Jacobs, Karin Coninx, Femke Ongenae, Filip De Turck
OBJECTIVES: With the uprise of the Internet of Things, wearables and smartphones are moving to the foreground. Ambient Assisted Living solutions are, for example, created to facilitate ageing in place. One example of such systems are fall detection systems. Currently, there exists a wide variety of fall detection systems using different methodologies and technologies. However, these systems often do not take into account the fall handling process, which starts after a fall is identified or this process only consists of sending a notification...
December 6, 2016: Methods of Information in Medicine
https://www.readbyqxmd.com/read/27920270/think-like-a-hacker-insights-on-the-latest-attack-vectors-and-security-controls-for-medical-device-applications
#3
Mandeep Khera
Ready or not, the Internet of things (IoT) is here. No longer just a buzz term, it'll continue to grow at an unprecedented pace over the next few years expecting to reach over 25 billion connected devices by 2020. History shows us that most fast growth technology solutions focus on solving business problems first and security is an afterthought. Unfortunately, IoT is following the same trend. Most IoT devices, apps, and infrastructure were developed without security in mind and are likely going to become targets of hackers...
December 4, 2016: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/27918437/managing-the-quality-of-experience-in-the-multimedia-internet-of-things-a-layered-based-approach
#4
Alessandro Floris, Luigi Atzori
This paper addresses the issue of evaluating the Quality of Experience (QoE) for Internet of Things (IoT) applications, with particular attention to the case where multimedia content is involved. A layered IoT architecture is firstly analyzed to understand which QoE influence factors have to be considered in relevant application scenarios. We then introduce the concept of Multimedia IoT (MIoT) and define a layered QoE model aimed at evaluating and combining the contributions of each influence factor to estimate the overall QoE in MIoT applications...
December 2, 2016: Sensors
https://www.readbyqxmd.com/read/27918424/optimized-energy-harvesting-cluster-head-selection-and-channel-allocation-for-iots-in-smart-cities
#5
Saleem Aslam, Najam Ul Hasan, Ju Wook Jang, Kyung-Geun Lee
This paper highlights three critical aspects of the internet of things (IoTs), namely (1) energy efficiency, (2) energy balancing and (3) quality of service (QoS) and presents three novel schemes for addressing these aspects. For energy efficiency, a novel radio frequency (RF) energy-harvesting scheme is presented in which each IoT device is associated with the best possible RF source in order to maximize the overall energy that the IoT devices harvest. For energy balancing, the IoT devices in close proximity are clustered together and then an IoT device with the highest residual energy is selected as a cluster head (CH) on a rotational basis...
December 2, 2016: Sensors
https://www.readbyqxmd.com/read/27916962/lightweight-sensor-authentication-scheme-for-energy-efficiency-in-ubiquitous-computing-environments
#6
Jaeseung Lee, Yunsick Sung, Jong Hyuk Park
The Internet of Things (IoT) is the intelligent technologies and services that mutually communicate information between humans and devices or between Internet-based devices. In IoT environments, various device information is collected from the user for intelligent technologies and services that control the devices. Recently, wireless sensor networks based on IoT environments are being used in sectors as diverse as medicine, the military, and commerce. Specifically, sensor techniques that collect relevant area data via mini-sensors after distributing smart dust in inaccessible areas like forests or military zones have been embraced as the future of information technology...
December 1, 2016: Sensors
https://www.readbyqxmd.com/read/27916929/a-framework-to-implement-iot-network-performance-modelling-techniques-for-network-solution-selection
#7
Declan T Delaney, Gregory M P O'Hare
No single network solution for Internet of Things (IoT) networks can provide the required level of Quality of Service (QoS) for all applications in all environments. This leads to an increasing number of solutions created to fit particular scenarios. Given the increasing number and complexity of solutions available, it becomes difficult for an application developer to choose the solution which is best suited for an application. This article introduces a framework which autonomously chooses the best solution for the application given the current deployed environment...
December 1, 2016: Sensors
https://www.readbyqxmd.com/read/27916841/market-model-for-resource-allocation-in-emerging-sensor-networks-with-reinforcement-learning
#8
Yue Zhang, Bin Song, Ying Zhang, Xiaojiang Du, Mohsen Guizani
Emerging sensor networks (ESNs) are an inevitable trend with the development of the Internet of Things (IoT), and intend to connect almost every intelligent device. Therefore, it is critical to study resource allocation in such an environment, due to the concern of efficiency, especially when resources are limited. By viewing ESNs as multi-agent environments, we model them with an agent-based modelling (ABM) method and deal with resource allocation problems with market models, after describing users' patterns...
November 29, 2016: Sensors
https://www.readbyqxmd.com/read/27886091/a-testbed-to-evaluate-the-fiware-based-iot-platform-in-the-domain-of-precision-agriculture
#9
Ramón Martínez, Juan Ángel Pastor, Bárbara Álvarez, Andrés Iborra
Wireless sensor networks (WSNs) represent one of the most promising technologies for precision farming. Over the next few years, a significant increase in the use of such systems on commercial farms is expected. WSNs present a number of problems, regarding scalability, interoperability, communications, connectivity with databases and data processing. Different Internet of Things middleware is appearing to overcome these challenges. This paper checks whether one of these middleware, FIWARE, is suitable for the development of agricultural applications...
November 23, 2016: Sensors
https://www.readbyqxmd.com/read/27886087/state-of-the-art-trends-and-future-of-bluetooth-low-energy-near-field-communication-and-visible-light-communication-in-the-development-of-smart-cities
#10
REVIEW
Gonzalo Cerruela García, Irene Luque Ruiz, Miguel Ángel Gómez-Nieto
The current social impact of new technologies has produced major changes in all areas of society, creating the concept of a smart city supported by an electronic infrastructure, telecommunications and information technology. This paper presents a review of Bluetooth Low Energy (BLE), Near Field Communication (NFC) and Visible Light Communication (VLC) and their use and influence within different areas of the development of the smart city. The document also presents a review of Big Data Solutions for the management of information and the extraction of knowledge in an environment where things are connected by an "Internet of Things" (IoT) network...
November 23, 2016: Sensors
https://www.readbyqxmd.com/read/27886054/an-improved-mobility-based-control-protocol-for-tolerating-clone-failures-in-wireless-sensor-networks
#11
Yuping Zhou, Naixue Xiong, Mingxin Tan, Rufeng Huang, Jon Kleonbet
Nowadays, with the ubiquitous presence of the Internet of Things industry, the application of emerging sensor networks has become a focus of public attention. Unattended sensor nodes can be comprised and cloned to destroy the network topology. This paper proposes a novel distributed protocol and management technique for the detection of mobile replicas to tolerate node failures. In our scheme, sensors' location claims are forwarded to obtain samples only when the corresponding witnesses meet. Meanwhile, sequential tests of statistical hypotheses are applied to further detect the cloned node by witnesses...
November 23, 2016: Sensors
https://www.readbyqxmd.com/read/27886016/an-internet-of-things-platform-architecture-for-supporting-ambient-assisted-living-environments
#12
Charalampos Tsirmpas, Ioannis Kouris, Athanasios Anastasiou, Kostas Giokas, Dimitra Iliopoulou, Dimitris Koutsouris
Internet of Things (IoT) is the logical further development of today's Internet, enabling a huge amount of devices to communicate, compute, sense and act. IoT sensors placed in Ambient Assisted Living (AAL) environments, enable the context awareness and allow the support of the elderly in their daily routines, ultimately allowing an independent and safe lifestyle. The vast amount of data that are generated and exchanged between the IoT nodes require innovative context modeling approaches that go beyond currently used models...
November 18, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27885161/a-rehabilitation-internet-of-things-in-the-home-to-augment-motor-skills-and-exercise-training
#13
Bruce H Dobkin
Although motor learning theory has led to evidence-based practices, few trials have revealed the superiority of one theory-based therapy over another after stroke. Nor have improvements in skills been as clinically robust as one might hope. We review some possible explanations, then potential technology-enabled solutions. Over the Internet, the type, quantity, and quality of practice and exercise in the home and community can be monitored remotely and feedback provided to optimize training frequency, intensity, and progression at home...
November 23, 2016: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/27879688/ieee-802-11ah-a-technology-to-face-the-iot-challenge
#14
Victor Baños-Gonzalez, M Shahwaiz Afaqui, Elena Lopez-Aguilera, Eduard Garcia-Villegas
Since the conception of the Internet of things (IoT), a large number of promising applications and technologies have been developed, which will change different aspects in our daily life. This paper explores the key characteristics of the forthcoming IEEE 802.11ah specification. This future IEEE 802.11 standard aims to amend the IEEE 802.11 legacy specification to support IoT requirements. We present a thorough evaluation of the foregoing amendment in comparison to the most notable IEEE 802.11 standards. In addition, we expose the capabilities of future IEEE 802...
November 22, 2016: Sensors
https://www.readbyqxmd.com/read/27874132/cubic-mesoporous-ag-cn-a-high-performance-humidity-sensor
#15
Vijay K Tomer, Nishanthi Thangaraj, Sweta Gahlot, Kamalakannan Kailasam
The fabrication of highly responsive, rapid response/recovery and durable relative humidity (%RH) sensors that can precisely monitor humidity levels still remains a considerable challenge for realizing the next generation humidity sensing applications. Herein, we report a remarkably sensitive and rapid %RH sensor having a reversible response using a nanocasting route for synthesizing mesoporous g-CN (commonly known as g-C3N4). The 3D replicated cubic mesostructure provides a high surface area thereby increasing the adsorption, transmission of charge carriers and desorption of water molecules across the sensor surfaces...
December 1, 2016: Nanoscale
https://www.readbyqxmd.com/read/27874033/influence-of-combined-fundamental-potentials-in-a-nonlinear-vibration-energy-harvester
#16
Pranay Podder, Dhiman Mallick, Andreas Amann, Saibal Roy
Ambient mechanical vibrations have emerged as a viable energy source for low-power wireless sensor nodes aiming the upcoming era of the 'Internet of Things'. Recently, purposefully induced dynamical nonlinearities have been exploited to widen the frequency spectrum of vibration energy harvesters. Here we investigate some critical inconsistencies between the theoretical formulation and applications of the bistable Duffing nonlinearity in vibration energy harvesting. A novel nonlinear vibration energy harvesting device with the capability to switch amidst individually tunable bistable-quadratic, monostable-quartic and bistable-quartic potentials has been designed and characterized...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27869704/a-node-localization-algorithm-based-on-multi-granularity-regional-division-and-the-lagrange-multiplier-method-in-wireless-sensor-networks
#17
Fengjun Shang, Yi Jiang, Anping Xiong, Wen Su, Li He
With the integrated development of the Internet, wireless sensor technology, cloud computing, and mobile Internet, there has been a lot of attention given to research about and applications of the Internet of Things. A Wireless Sensor Network (WSN) is one of the important information technologies in the Internet of Things; it integrates multi-technology to detect and gather information in a network environment by mutual cooperation, using a variety of methods to process and analyze data, implement awareness, and perform tests...
November 18, 2016: Sensors
https://www.readbyqxmd.com/read/27869682/an-indoor-monitoring-system-for-ambient-assisted-living-based-on-internet-of-things-architecture
#18
Gonçalo Marques, Rui Pitarma
The study of systems and architectures for ambient assisted living (AAL) is undoubtedly a topic of great relevance given the aging of the world population. The AAL technologies are designed to meet the needs of the aging population in order to maintain their independence as long as possible. As people typically spend more than 90% of their time in indoor environments, indoor air quality (iAQ) is perceived as an imperative variable to be controlled for the inhabitants' wellbeing and comfort. Advances in networking, sensors, and embedded devices have made it possible to monitor and provide assistance to people in their homes...
November 17, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27854501/the-challenge-of-wireless-reliability-and-coexistence
#19
H Stephen Berger
Wireless communication plays an increasingly important role in healthcare delivery. This further heightens the importance of wireless reliability, but quantifying wireless reliability is a complex and difficult challenge. Understanding the risks that accompany the many benefits of wireless communication should be a component of overall risk management. The emerging trend of using sensors and other device-to-device communications, as part of the emerging Internet of Things concept, is evident in healthcare delivery...
September 2016: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/27854282/cellular-automata-based-application-for-driver-assistance-in-indoor-parking-areas
#20
Cándido Caballero-Gil, Pino Caballero-Gil, Jezabel Molina-Gil
This work proposes an adaptive recommendation mechanism for smart parking that takes advantage of the popularity of smartphones and the rise of the Internet of Things. The proposal includes a centralized system to forecast available indoor parking spaces, and a low-cost mobile application to obtain data of actual and predicted parking occupancy. The described scheme uses data from both sources bidirectionally so that the centralized forecast system is fed with data obtained with the distributed system based on smartphones, and vice versa...
November 15, 2016: Sensors
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