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Smart environments interconnect indoor building environments, indoor wireless sensor and actuator networks, smartphones, and human together to provide smart infrastructure management and intelligent user experiences. To enable the "smart" operations, a complete set of hardware and software components are required. In this work, we present Smart Syndesi, a system for creating indoor location-aware...
A communication protocol for fog computing should be efficient, lightweight and customizable. In this work we focus in a communication protocol for fog nodes composed of wireless sensors, which are spatially distributed autonomous sensors monitoring physical or environmental conditions. Problems with data congestion and limited physical resources are common in these networks. For the optimization...
The article presents an analysis of correlation-based clustering procedure in cooperative spectrum sensing. The motivation is to assess if it is more beneficial in terms of energy efficiency to group nodes according to the received signal-to-noise ratio (SNR) on the link between Primary User and node or according to the distance between nodes. To this end, a merged clustering measure is introduced...
Energy Harvesting is a solution for continued operation of WSNs without depending on batteries. This paper introduces REAPer, an adaptive energy harvester for microsources that can be configured and monitored by the supplied WSN node. We combine REAPer with an IdealVolting capable sensor node that can fully exploit the monitoring and control capabilities of REAPer. The efficiency and overhead of the...
This paper describes a distributed wireless acoustic sensor network (WASN) platform called WHISPER that is capable of synchronous multichannel sampling at different spatial locations with a sampling clock whose relative jitter is less than 300 ns. The platform comprises up to four data acquisition modules with onboard computing capabilities, and that can form an ad-hoc Wi-Fi network allowing an additional...
The expansion of Internet of Things (IoT) and the evolution in communication technologies have enabled homes, cars even whole cities to be network connected. However, during an emergency incident, IoT devices have not been used to trigger emergency calls directly to healthcare providers mainly due to their constrained capabilities and lack of support session-oriented communications. Moreover, emergency...
In recent years, many visions for hitherto considered-futuristic computing applications gained momentum. The vision of smart factories is one example for these trends, which all share a common requirement: the prolific dissemination of sensor information. As wireless communication in smart factories needs to cope with harsh environments, the amount of sensor information produced by sources will likely...
Recent breakthroughs in wireless energy transfer-based rechargeable batteries enable a promising application of Wireless Charging Vehicles (WCVs) in Wireless Rechargeable Sensor Networks (WRSNs). This paper studies cooperative WCV schedules in WRSNs to optimize sensor recharging. The objective is to minimize the number of WCVs under the constraint that all sensors must be periodically recharged before...
Internet-of-Things (IoT) is revolutionizing the healthcare by providing high-quality services, lowering the costs, and increasing the efficiency of management by allowing the physical objects to integrate with computer systems to collect the sensed data and process as per the need. Healthcare industries will also get benefited due to reduced investments and management, automated services, better disease...
Wi-Fi enabled hand-held devices have quickly occupied the consumer market as a result of the remarkable customer acceptance of IEEE 802.11 standard. In this regard, the demand of high throughput introduces high throughput standards such as IEEE 802.11ac. It supports Dynamic Bandwidth Channel Access (DBCA), where a wireless station selects channel bandwidth dynamically based on the availability of...
This paper presents new approach for unobtrusive indoor fall detection by an IR thermal array sensor. Unlike existing methods that run fall detection at server and require high communication and processing rates, we perform fall detection within the sensor node by a computationally inexpensive algorithm that signals the server only when a fall occurs. Experiments with prototype design show that such...
In this paper, we presented the design of low-cost, compact and wireless 12 lead Electrocardiogram analog front-end (AFE) system using TI ADS 1198. ECG analog front-end (AFE) systems are designed with ASICs or custom designed ICs which are too expensive to be used. The main components of a conventional ECG system include instrumentation amplifiers, operational amplifiers that implement active filters...
The advent of Internet-of-Things (IoT) applications, such as environmental monitoring, smart cities, and home automation, has taken the IoT concept from hype to reality at a massive scale. However, more mission-critical application areas such as energy, security and health care do not only demand low-power connectivity, but also highly reliable and guaranteed performance. While fulfilling these requirements...
The development of mobile internet and semiconductor technology making the people getting strong demand for the home life of the network, intelligence and energy saving. Now a days, energy saving is becoming more vital role as the energy conservation and environmental protection are taking more and more attentions. We can detect environmental condition through intelligent control using Wireless Sensor...
This research would be the early stage in saving and managing energy, especially electrical energy in a miniature. The research has been done in the assembly of components, namely temperature, humidity, lighting and electric active power sensors, where they were equipped by 4–20 mA transmitters. These transmitters entered to the four channel analog module of programmable logic controller (PLC). From...
In this paper, we present a new beacon recognition method for wireless sensor devices to access beacon-enabled WSN with low-power consumption. At first, we explain necessity of the low-power beacon recognition in the beacon-enabled wireless sensor networks. By realigning network resources, we catch that beacons are in the same position in each BI (beacon interval). Then, we propose how to switch operation...
This paper presents the ongoing work of applying the project-based learning approach to teaching IoT technologies in an advanced embedded networking course, which is offered to electrical and computer engineering students. The emphasis of this course is on teaching the prominent wireless networking technologies IEEE 802.11 (WiFi) for the IoT and the development of the IoT applications. Microcontrollers...
State of the art technologies in micro- and nano-electromechanical systems (MEMS and NEMS) devices have been proposed to address important issues in renewable energies, health sciences, consumer electronics, and information technology. Incorporation of MEMS / NEMS interfaces when creating a system on chip (SOC) utilizes knowledge of nanotechnology materials and devices, which is delivered as part...
The online temperature measurement technology is analyzed and verified in this paper based on power supplied by the inductive current and wireless communication technique combined with the structure and principle of disconnector, solving problems in the online temperature measure system such as wireless data transmission, sensor operating supply and equipment high reliability in an environment of...
Wireless Software Defined Network (W-SDN) is the application of SDN technology in wireless network and has been widely used in sensor network, 5G communication network, et al. Since SDN needs to install flow entries at every hop to match each data packet, then it may bring heavy burden to the wireless nodes as the wireless node usually has much smaller memory space comparing with network devices in...
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