A key application of the Internet Things (IoT) paradigm lies within industrial contexts. Indeed, emerging Industrial (IIoT), commonly referred to as Industry 4.0, promises revolutionize production and manufacturing through use large numbers networked embedded sensing devices, combination computing technologies, such Fog/Cloud Computing Artificial Intelligence. The IIoT is characterized by an increased degree inter-connectivity, which not only creates opportunities for industries that adopt...

This paper serves as a survey and empirical evaluation of the state-of-the-art in activity recognition methods using accelerometers. The is particularly focused on long-term real-world settings. In these environments, data collection not trivial matter; thus, there are performance trade-offs between prediction accuracy, which sole system objective, keeping maintenance overhead at minimum levels. We examine research that has selection activities, features extracted from accelerometer data,...

Wireless Sensor Network (WSN), which are enablers of the Internet Things (IoT) technology, typically used en-masse in widely physically distributed applications to monitor dynamic conditions environment. They collect raw sensor data that is processed centralised. With current traditional techniques state-of-art WSN programmed for specific tasks, it hard react any change environment beyond scope intended task. To solve this problem, a synergy between Software-Defined Networking (SDN) and has...

Energy Harvesting (EH) provides a promising solution to one of the biggest problems faced by Wireless Sensor Networks (WSN), namely energy supply. By harvesting from surrounding environment, sensors can have an in finite lifetime without any needs for battery recharge or replacement. Battery-powered WSNs are typically designed maximize conservation order postpone as much possible inevitable depletion. Instead, EH-WSNs being on different principle. The focus is maximizing network performance...

Cardiovascular diseases are the leading cause of death in U.K., motivating use long term wearable devices to monitor heart out-of-the-clinic settings. While a wide number rate measuring now available, they principally based upon photoplethysmography rather than electrocardiogram (ECG) and <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">stand-alone</i> integrated with Internet-of-Things infrastructures which collect combine information from...

Wireless industrial networks require reliable and deterministic communication. Determinism implies that there must be a guarantee each data packet will delivered within bounded delay. Moreover, it ensure the potential congestion or interference not impact predictable properties of network. In 2016, IEEE 802.15.4 time-slotted channel hopping (TSCH) emerged as an alternative medium access control to standards such WirelessHART ISA100.11a. However, TSCH is based on traditional collision...

Smart health home systems and assisted living architectures rely on severely energy-constrained sensing devices, such as wearable sensors, for the generation of data their reliable wireless communication to a central location. However, need recharging battery regularly constitutes maintenance burden that hinders long-term cost-effectiveness these systems, especially health-oriented applications target people in need, elderly or chronically ill. These generate raw is processed into knowledge...

Ambient Assisted Living (AAL) systems based on sensor technologies are seen as key enablers to an ageing society. However, most approaches in this space do not provide a truly generic ambient - one that is only capable of assisting people with diverse medical conditions, but can also recognise the habits healthy habitants, well those developing conditions. The recognition Activities Daily (ADL) understanding and provisioning appropriate efficient care. ADL particularly difficult achieve...

Healthcare professionals currently lack the means to gather unbiased and quantitative multi-modal data about long-term behaviors of patients in their home environments. SPHERE is a platform non-medical sensors for behavior monitoring residential environments that aims overcome this major limitation healthcare provision by using inherently cost-efficient scalable technologies Internet Things (IoT). One SPHERE's key tasks help bring next-generation low-power wireless networking sensing from...

Wearable technologies are valuable tools that can encourage people to monitor their own well-being and facilitate timely health interventions. In this paper, we present SPW-2; a low-profile versatile wearable sensor employs two ultra low power accelerometers an optional gyroscope. Designed

This paper outlines the Sensor Platform for HEalthcare in Residential Environment (SPHERE) project and details SPHERE challenge that will take place conjunction with European Conference on Machine Learning Principles Practice of Knowledge Discov- ery (ECML-PKDD) between March July 2016. The chal- lenge is an activity recognition competition where predictions are made from video, accelerometer environmental sensors. Monitory prizes be awarded to top three entrants, e1,000 being winner, e600...

This paper serves a survey and empirical evaluation of the state-of-the-art in activity recognition methods using accelerometers. We examine research that has focused on selection activities, features are extracted from accelerometer data, segmentation time-series locations accelerometers, configuration trade-offs, test/retest reliability, generalisation performance. Furthermore, we study these questions an experimental platform show, somewhat surprisingly, many disparate configurations...

In this paper, error correction is introduced to the Bluetooth low energy and IEEE 802.15.4 standards by utilizing data redundancy provided cyclic check (CRC) codes used both protocols detect erroneous packets. A scenario with an energy-constrained transmitter a constraint-free infrastructure assumed that enables additional signal processing at receiving side, keeping intact. CRC achieved using novel approach of applying iterative decoding techniques. The proposed methods are evaluated based...

Cryptography is one of the most widely employed means to ensure confidentiality in Internet Things (IoT). Establishing cryptographically secure links between IoT devices requires prior consensus a secret encryption key. Yet, are resource-constrained and cannot employ traditional key distribution schemes. As result, there growing interest generating random keys locally, using shared randomness communicating channel. This article presents generation scheme, named SKYGlow, which targeted at...

Time-Slotted Channel Hopping from the IEEE 802.15.4-2015 standard requires that network nodes are tightly time-synchronized. Existing implementations of TSCH on embedded hardware characterized by tens-of-microseconds large synchronization errors, higher accuracy would enable reduction idle listening time receivers, in this way decreasing energy required to run TSCH. For some applications, it also allow replace dedicated mechanisms with We show errors existing caused primarily imprecise clock...

Networks deployed in real-world conditions have to cope with dynamic, unpredictable environmental temperature changes. These changes affect the clock rate on network nodes, and can cause faster de-synchronization compared situations where devices are operating under stable conditions. Wireless protocols, such as time-slotted channel hopping (TSCH) from IEEE 802.15.4-2015 standard, affected by this problem, since they require tight synchronization among all nodes for remain operational. This...

Demographic changes such as the ageing population and continuous rise of chronic medical conditions obesity, diabetes depression make our healthcare systems economically unsustainable. Sensing technologies are promising solutions that can provide cost-effective answers to these challenges. In this paper, we focus on long-term in-house activity monitoring aims at early detection prevention conditions. context, present experimentally evaluate an ultra low-power (less than 100- μW average power...

The confidentiality of communications in the Internet Things (IoT) is critical, with cryptography currently being most widely employed method ensuring it. Establishing cryptographically secure communication links between two transceivers requires pre-agreement on some key, unknown to an external attacker. In recent years there has been growing attention techniques that generate a shared random key through observation channel and its effects exchanged messages. this work we present SKYGlow,...

While energy consumption is widely considered the primary challenge of wireless networked devices, harvesting emerges as a promising way powering Internet Things (IoT). In Medium Access Control (MAC) layer communication stack, introduces spatial and temporal uncertainty in availability energy. this context, paper focuses on design implementation MAC embedded systems that are powered by harvesting; providing novel protocol features practical experiences to designers consumer electronics who...

Time-Slotted Channel Hopping (TSCH) from the IEEE 802.15.4-2015 standard uses channel hopping to combat interference and frequency-selective fading. Due pseudorandom nature of TSCH process, energy usage end-to-end delay achieved in statically configured networks are suboptimal when compared using a dynamically updated set channels. We investigate compare advantages several different adaptive selection metrics methods under presence external, frequency-specific interference. In our...

The upcoming Internet of Things (IoT) applications include real-time human activity monitoring with wearable sensors. Compared to the traditional environmental sensing low-power wireless nodes, these new generate a constant stream much higher rate. Nevertheless, devices remain battery powered and therefore restricted standards such as IEEE 802.15.4 or Bluetooth Low Energy (BLE). Our work tackles problem building reliable autonomous schedule for forwarding this kind dynamic data in TSCH...

One of the challenges deploying IoT battery-powered sensing systems is managing maintenance batteries. To that end, practitioners often employ prediction techniques to approximate battery lifetime deployed devices. Following a series longterm residential deployments in wild, this paper contrasts real-world lifetimes and discharge patterns against predictions were conducted during development system. The comparison highlights making predictions, an attempt motivate further research on matter....

TSCH‐over‐LoRa is a long range and reliable IPv6 multi‐hop solution that aims at combining the reliability of TSCH (Time‐Slotted, Channel Hopping) together with capabilities LoRa. brings mesh networking to LoRa devices, enabling use standard protocols (such as RPL, UDP, CoAP) operation TSCH/6TiSCH industrial wireless IoT networks. We design, implement, integrate into stack Contiki‐NG operating system experimentally demonstrate its compatibility higher‐level resilience interference.