1
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Mehmood A, Khan AN, Natgunanathan I, Shafique A, Khan IA, Khan AUR. Enhanced lightweight and compromised-resilient image encryption for resource constrained environments. PLoS One 2025; 20:e0320046. [PMID: 40138270 PMCID: PMC11940721 DOI: 10.1371/journal.pone.0320046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2024] [Accepted: 02/12/2025] [Indexed: 03/29/2025] Open
Abstract
The Internet is experiencing a significant increase in multimedia traffic volume, highlighting the growing importance of managing and securing multimedia content efficiently. Classical or traditional security solutions are suitable for those applications that have sufficient computing resources. However, the rise of IoTs and its applications opens new directions for researchers to provide lightweight security solutions. Many IoT applications send critical image data over the Internet, which requires adequate protection. Traditional security solutions are not suitable due to the resource-constrained nature of the environments. An effective security solution is necessary for such environments that balance lightweight design with strong security measures. Current research efforts in this area lack the ability to provide both secure and lightweight properties simultaneously. Therefore, a robust and lightweight cryptosystem is needed to secure the sensitive information of digital images. This research addresses the existing gap by proposing a lightweight and robust cryptographic system that encrypts digital data in less processing time without compromising security. The proposed image encryption technique is evaluated using security and performance measures, such as cipher processing time, histogram analysis, entropy, correlation, mean square error and sensitivity analysis. Moreover, the comprehensive analysis reveals the proposed image encryption technique effectively and collectively meets all the security and performance requirements compared to existing state-of-the-art lightweight image encryption techniques.
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Affiliation(s)
| | - Abdul Nasir Khan
- COMSATS University Islamabad, Abbottabad Campus, Islamabad, Pakistan
| | | | - Arslan Shafique
- School of Biomedical Engineering, University of Glasgow, Glasgow, United Kingdom
| | - Iftikhar Ahmed Khan
- COMSATS University Islamabad, Abbottabad Campus, Islamabad, Pakistan
- Department of CS & IT, University of Lahore, Lahore, Pakistan
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2
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Alotaibi A, Aldawghan H, Aljughaiman A. A Review of the Authentication Techniques for Internet of Things Devices in Smart Cities: Opportunities, Challenges, and Future Directions. SENSORS (BASEL, SWITZERLAND) 2025; 25:1649. [PMID: 40292695 PMCID: PMC11944561 DOI: 10.3390/s25061649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2025] [Revised: 02/22/2025] [Accepted: 03/05/2025] [Indexed: 04/30/2025]
Abstract
Smart cities have witnessed a transformation in urban living through the Internet of Things (IoT), which has improved connectedness, efficiency, and sustainability. However, the adoption of IoT devices presents significant security vulnerabilities, particularly in authentication. The specific limitations of IoT contexts, such as constrained computational resources, are frequently not adequately addressed by traditional authentication techniques. The existing methods of authentication used for IoT devices in smart cities are critically examined in this review study. We evaluate the advantages and disadvantages of each mechanism, emphasizing real-world applicability. Additionally, we examine cutting-edge developments that offer improved security and scalability, such as blockchain technology, biometric authentication, and machine learning-based solutions. This study aims to identify gaps and propose future research directions to develop robust authentication frameworks that protect user privacy and data integrity.
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Affiliation(s)
| | | | - Ahmed Aljughaiman
- Department of Computer Networks and Communications, College of Computer Sciences and Information Technology, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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3
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Teja Nibhanupudi SS, Roy A, Veksler D, Coupin M, Matthews KC, Disiena M, Ansh, Singh JV, Gearba-Dolocan IR, Warner J, Kulkarni JP, Bersuker G, Banerjee SK. Ultra-fast switching memristors based on two-dimensional materials. Nat Commun 2024; 15:2334. [PMID: 38485722 PMCID: PMC10940724 DOI: 10.1038/s41467-024-46372-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 02/26/2024] [Indexed: 03/18/2024] Open
Abstract
The ability to scale two-dimensional (2D) material thickness down to a single monolayer presents a promising opportunity to realize high-speed energy-efficient memristors. Here, we report an ultra-fast memristor fabricated using atomically thin sheets of 2D hexagonal Boron Nitride, exhibiting the shortest observed switching speed (120 ps) among 2D memristors and low switching energy (2pJ). Furthermore, we study the switching dynamics of these memristors using ultra-short (120ps-3ns) voltage pulses, a frequency range that is highly relevant in the context of modern complementary metal oxide semiconductor (CMOS) circuits. We employ statistical analysis of transient characteristics to gain insights into the memristor switching mechanism. Cycling endurance data confirms the ultra-fast switching capability of these memristors, making them attractive for next generation computing, storage, and Radio-Frequency (RF) circuit applications.
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Affiliation(s)
- S S Teja Nibhanupudi
- Microelectronics Research Center, The University of Texas at Austin, Austin, TX, 78758, USA.
| | - Anupam Roy
- Microelectronics Research Center, The University of Texas at Austin, Austin, TX, 78758, USA.
- Birla Institute of Technology, Mesra, Ranchi, 835215, India.
| | | | - Matthew Coupin
- Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Kevin C Matthews
- Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Matthew Disiena
- Microelectronics Research Center, The University of Texas at Austin, Austin, TX, 78758, USA
| | - Ansh
- Microelectronics Research Center, The University of Texas at Austin, Austin, TX, 78758, USA
| | - Jatin V Singh
- Microelectronics Research Center, The University of Texas at Austin, Austin, TX, 78758, USA
| | | | - Jamie Warner
- Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Jaydeep P Kulkarni
- Microelectronics Research Center, The University of Texas at Austin, Austin, TX, 78758, USA
| | | | - Sanjay K Banerjee
- Microelectronics Research Center, The University of Texas at Austin, Austin, TX, 78758, USA.
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4
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Chen C, Zhang H, Xu G, Hou T, Fu J, Wang H, Xia X, Yang C, Zi Y. Passive Internet of Events Enabled by Broadly Compatible Self-Powered Visualized Platform Toward Real-Time Surveillance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304352. [PMID: 37870202 PMCID: PMC10700247 DOI: 10.1002/advs.202304352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/04/2023] [Indexed: 10/24/2023]
Abstract
Surveillance is an intricate challenge worldwide especially in those complicated environments such as nuclear plants, banks, crowded areas, barns, etc. Deploying self-powered wireless sensor nodes can increase the system's event detection capabilities by collecting environmental changes, while the incompatibility among components (energy harvesters, sensors, and wireless modules) limits their application. Here, a broadly compatible self-powered visualized platform (SPVP) is reported to construct a passive internet of events (IoE) network for surveillance systems. By encoding electric signals into reference and working LEDs, SPVP can visualize resistance change generated by commercial resistive sensors with a broad working range (<107 Ω) and the transmission distance is up to 30 meters. Visible light signals are captured by surveillance cameras and processed by the cloud to achieve real-time event monitoring and identification, which forms the passive IoE network. It is demonstrated that the passive-IoE-based surveillance system can detect intrusion, theft, fire alarm, and distress signals quickly (30 ms) for 106 cycles. Moreover, the confidential information can be encrypted by SPVPs and accessed through a phone application. This universal scheme may have huge potential for the construction of safe and smart cities.
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Affiliation(s)
- Chaojie Chen
- Department of Mechanical and Automation EngineeringThe Chinese University of Hong Kong ShatinN.T. Hong KongHong KongChina
| | - Haoran Zhang
- Thrust of Sustainable Energy and EnvironmentThe Hong Kong University of Science and Technology (Guangzhou)NanshaGuangzhouGuangdong511400China
| | - Guoqiang Xu
- Department of Mechanical and Automation EngineeringThe Chinese University of Hong Kong ShatinN.T. Hong KongHong KongChina
| | - Tingting Hou
- Department of Mechanical and Automation EngineeringThe Chinese University of Hong Kong ShatinN.T. Hong KongHong KongChina
| | - Jingjing Fu
- Department of Mechanical and Automation EngineeringThe Chinese University of Hong Kong ShatinN.T. Hong KongHong KongChina
| | - Haoyu Wang
- Department of Mechanical and Automation EngineeringThe Chinese University of Hong Kong ShatinN.T. Hong KongHong KongChina
| | - Xin Xia
- Department of Mechanical and Automation EngineeringThe Chinese University of Hong Kong ShatinN.T. Hong KongHong KongChina
- Thrust of Sustainable Energy and EnvironmentThe Hong Kong University of Science and Technology (Guangzhou)NanshaGuangzhouGuangdong511400China
| | - Cheng Yang
- Institute of Materials ResearchTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055P. R. China
| | - Yunlong Zi
- Department of Mechanical and Automation EngineeringThe Chinese University of Hong Kong ShatinN.T. Hong KongHong KongChina
- Thrust of Sustainable Energy and EnvironmentThe Hong Kong University of Science and Technology (Guangzhou)NanshaGuangzhouGuangdong511400China
- HKUST Shenzhen‐Hong Kong Collaborative Innovation Research InstituteFutianShenzhenGuangdong518048China
- Guangzhou HKUST Fok Ying Tung Research InstituteGuangzhouGuangdong511400China
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5
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Prauzek M, Kucova T, Konecny J, Adamikova M, Gaiova K, Mikus M, Pospisil P, Andriukaitis D, Zilys M, Martinkauppi B, Koziorek J. IoT Sensor Challenges for Geothermal Energy Installations Monitoring: A Survey. SENSORS (BASEL, SWITZERLAND) 2023; 23:5577. [PMID: 37420742 DOI: 10.3390/s23125577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/25/2023] [Accepted: 06/07/2023] [Indexed: 07/09/2023]
Abstract
Geothermal energy installations are becoming increasingly common in new city developments and renovations. With a broad range of technological applications and improvements in this field, the demand for suitable monitoring technologies and control processes for geothermal energy installations is also growing. This article identifies opportunities for the future development and deployment of IoT sensors applied to geothermal energy installations. The first part of the survey describes the technologies and applications of various sensor types. Sensors that monitor temperature, flow rate and other mechanical parameters are presented with a technological background and their potential applications. The second part of the article surveys Internet-of-Things (IoT), communication technology and cloud solutions applicable to geothermal energy monitoring, with a focus on IoT node designs, data transmission technologies and cloud services. Energy harvesting technologies and edge computing methods are also reviewed. The survey concludes with a discussion of research challenges and an outline of new areas of application for monitoring geothermal installations and innovating technologies to produce IoT sensor solutions.
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Affiliation(s)
- Michal Prauzek
- Department of Cybernetics and Biomedical Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic
| | - Tereza Kucova
- Department of Cybernetics and Biomedical Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic
| | - Jaromir Konecny
- Department of Cybernetics and Biomedical Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic
| | - Monika Adamikova
- Department of Cybernetics and Biomedical Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic
| | - Karolina Gaiova
- Department of Cybernetics and Biomedical Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic
| | - Miroslav Mikus
- Department of Cybernetics and Biomedical Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic
| | - Pavel Pospisil
- Department of Geotechnics and Underground Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic
| | - Darius Andriukaitis
- Department of Electronics Engineering, Kaunas University of Technology, 44249 Kaunas, Lithuania
| | - Mindaugas Zilys
- Department of Electronics Engineering, Kaunas University of Technology, 44249 Kaunas, Lithuania
| | | | - Jiri Koziorek
- Department of Cybernetics and Biomedical Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic
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6
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Molina Araque S, Martinez I, Papadopoulos GZ, Montavont N, Toutain L. Yet Another Compact Time Series Data Representation Using CBOR Templates (YACTS). SENSORS (BASEL, SWITZERLAND) 2023; 23:s23115124. [PMID: 37299850 DOI: 10.3390/s23115124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 05/23/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023]
Abstract
The Internet of Things (IoT) technology is growing rapidly, while the IoT devices are being deployed massively. However, interoperability with information systems remains a major challenge for this accelerated device deployment. Furthermore, most of the time, IoT information is presented as Time Series (TS), and while the majority of the studies in the literature focus on the prediction, compression, or processing of TS, no standardized representation format has emerged. Moreover, apart from interoperability, IoT networks contain multiple constrained devices which are designed with limitations, e.g., processing power, memory, or battery life. Therefore, in order to reduce the interoperability challenges and increase the lifetime of IoT devices, this article introduces a new format for TS based on CBOR. The format exploits the compactness of CBOR by leveraging delta values to represent measurements, employing tags to represent variables, and utilizing templates to convert the TS data representation into the appropriate format for the cloud-based application. Moreover, we introduce a new refined and structured metadata to represent additional information for the measurements, then we provide a Concise Data Definition Language (CDDL) code to validate the CBOR structures against our proposal, and finally, we present a detailed performance evaluation to validate the adaptability and the extensibility of our approach. Our performance evaluation results show that the actual data sent by IoT devices can be reduced by between 88% and 94% compared to JavaScript Object Notation (JSON), between 82% and 91% compared to Concise Binary Object Representation (CBOR) and ASN.1, and between 60% and 88% compared to Protocol buffers. At the same time, it can reduce Time-on-Air by between 84% and 94% when a Low Power Wide Area Networks (LPWAN) technology such as LoRaWAN is employed, leading to a 12-fold increase in battery life compared to CBOR format or between a 9-fold and 16-fold increase when compared to Protocol buffers and ASN.1, respectively. In addition, the proposed metadata represent an additional 0.5% of the overall data transmitted in cases where networks such as LPWAN or Wi-Fi are employed. Finally, the proposed template and data format provide a compact representation of TS that can significantly reduce the amount of data transmitted containing the same information, extend the battery life of IoT devices, and improve their lifetime. Moreover, the results show that the proposed approach is effective for different data types and it can be integrated seamlessly into existing IoT systems.
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Affiliation(s)
| | | | | | | | - Laurent Toutain
- IMT Atlantique Campus Rennes, SRCD, IRISA, 35510 Brest, France
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7
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Song Z, Rahmadya B, Sun R, Takeda S. A Feasibility Study on Monitoring Earthquake-Caused Furniture Vibrations Using Radiofrequency Identification Sensor Tags. SENSORS (BASEL, SWITZERLAND) 2023; 23:3279. [PMID: 36991988 PMCID: PMC10051787 DOI: 10.3390/s23063279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/15/2023] [Accepted: 03/16/2023] [Indexed: 06/19/2023]
Abstract
This paper presents a feasibility study on monitoring earthquake-caused furniture vibrations using radiofrequency identification (RFID) sensor tags. Finding unstable objects by exploiting the vibrations caused by weaker earthquakes is effective as one of the potential countermeasures for large-scale earthquakes in earthquake-prone areas. For this purpose, a previously proposed ultrahigh-frequency (UHF)-band RFID-based batteryless vibration/physical shock sensing system enabled long-term monitoring. This RFID sensor system introduced standby and active modes for long-term monitoring. This system enabled lower-cost wireless vibration measurements without affecting the vibration of furniture because the RFID-based sensor tags provide lightweight, low-cost, and battery-free operations. This RFID sensor system observed earthquake-cased furniture vibrations in a room on the fourth floor of a building eight stories high at Ibaraki University, Hitachi, Ibaraki, Japan. The observation results revealed that the RFID sensor tags identified the vibrations of furniture caused by earthquakes. The RFID sensor system also observed the vibration duration times of the objects in a room and specified the most unstable reference object. Hence, the proposed vibration sensing system helped achieve safe living in indoor environments.
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Affiliation(s)
- Zequn Song
- Graduate School of Science and Engineering, Ibaraki University, Hitachi 316-8511, Japan
| | - Budi Rahmadya
- Computer System Department, Faculty of Information and Technology, Andalas University, Padang 25175, Indonesia
| | - Ran Sun
- College of Engineering, Ibaraki University, Hitachi 316-8511, Japan
| | - Shigeki Takeda
- College of Engineering, Ibaraki University, Hitachi 316-8511, Japan
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8
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Akin-Ponnle AE, Capitão P, Torres R, Carvalho NB. Home Chimney Pinwheels (HCP) as Steh and Remote Monitoring for Smart Building IoT and WSN Applications. SENSORS (BASEL, SWITZERLAND) 2023; 23:2858. [PMID: 36905072 PMCID: PMC10007205 DOI: 10.3390/s23052858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Smart, and ultra-low energy consuming Internet of Things (IoTs), wireless sensor networks (WSN), and autonomous devices are being deployed to smart buildings and cities, which require continuous power supply, whereas battery usage has accompanying environmental problems, coupled with additional maintenance cost. We present Home Chimney Pinwheels (HCP) as the Smart Turbine Energy Harvester (STEH) for wind; and Cloud-based remote monitoring of its output data. The HCP commonly serves as an external cap to home chimney exhaust outlets; they have very low inertia to wind; and are available on the rooftops of some buildings. Here, an electromagnetic converter adapted from a brushless DC motor was mechanically fastened to the circular base of an 18-blade HCP. In simulated wind, and rooftop experiments, an output voltage of 0.3 V to 16 V was realised for a wind speed between 0.6 to 16 km/h. This is sufficient to operate low-power IoT devices deployed around a smart city. The harvester was connected to a power management unit and its output data was remotely monitored via the IoT analytic Cloud platform "ThingSpeak" by means of LoRa transceivers, serving as sensors; while also obtaining supply from the harvester. The HCP can be a battery-less "stand-alone" low-cost STEH, with no grid connection, and can be installed as attachments to IoT or wireless sensors nodes in smart buildings and cities.
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Affiliation(s)
- Ajibike Eunice Akin-Ponnle
- Departamento de Electrónical, Telecomunicações e Informática, (DETI), Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Instituto de Telecomunicações, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Paulo Capitão
- Departamento de Electrónical, Telecomunicações e Informática, (DETI), Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Instituto de Telecomunicações, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Ricardo Torres
- Departamento de Electrónical, Telecomunicações e Informática, (DETI), Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Instituto de Telecomunicações, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Nuno Borges Carvalho
- Departamento de Electrónical, Telecomunicações e Informática, (DETI), Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Instituto de Telecomunicações, Universidade de Aveiro, 3810-193 Aveiro, Portugal
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9
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Liu Y, Riba JR, Moreno-Eguilaz M. Energy Balance of Wireless Sensor Nodes Based on Bluetooth Low Energy and Thermoelectric Energy Harvesting. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23031480. [PMID: 36772518 PMCID: PMC9921594 DOI: 10.3390/s23031480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/14/2023] [Accepted: 01/27/2023] [Indexed: 06/12/2023]
Abstract
The internet of things (IoT) makes it possible to measure physical variables and acquire data in places that were impossible a few years ago, such as transmission lines and electrical substations. Monitoring and fault diagnosis strategies can then be applied. A battery or an energy harvesting system charging a rechargeable battery typically powers IoT devices. The energy harvesting unit and rechargeable battery supply the sensors and wireless communications modules. Therefore, the energy harvesting unit must be correctly sized to optimize the availability and reliability of IoT devices. This paper applies a power balance of the entire IoT device, including the energy harvesting module that includes two thermoelectric generators and a DC-DC converter, the battery, and the sensors and communication modules. Due to the small currents typical of the different communication phases and their fast-switching nature, it is not trivial to measure the energy in each phase, requiring very specific instrumentation. This work shows that using conventional instrumentation it is possible to measure the energy involved in the different modes of communication. A detailed energy balance of the battery is also carried out during charge and discharge cycles, as well as communication modes, from which the maximum allowable data transfer rate is determined. The approach presented here can be generalized to many other smart grid IoT devices.
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Affiliation(s)
- Yuming Liu
- Electrical and Electronics Engineering Departments, Universitat Politècnica de Catalunya, Rambla Sant Nebridi 22, 08222 Terrassa, Spain
- SBI Connectors, Sant Esteve Sesrovires, Albert Einstein, 5, 08635 Sant Esteve Sesrovires, Spain
| | - Jordi-Roger Riba
- Electrical and Electronics Engineering Departments, Universitat Politècnica de Catalunya, Rambla Sant Nebridi 22, 08222 Terrassa, Spain
| | - Manuel Moreno-Eguilaz
- Electrical and Electronics Engineering Departments, Universitat Politècnica de Catalunya, Rambla Sant Nebridi 22, 08222 Terrassa, Spain
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10
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Eledlebi K, Alzubaidi AA, Yeob Yeun C, Damiani E, Mateu V, Al-Hammadi Y. Simulation Analysis and Comparison of New Hybrid TLI-µTESLA and Variant TESLA Protocols Using SHA-2 and SHA-3 Hash Functions. SENSORS (BASEL, SWITZERLAND) 2022; 22:9063. [PMID: 36501765 PMCID: PMC9737460 DOI: 10.3390/s22239063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/14/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
The evolution of 5G and 6G networks has enhanced the ability of massive IoT devices to provide real-time monitoring and interaction with the surrounding environment. Despite recent advances, the necessary security services, such as immediate and continuous authentication, high scalability, and cybersecurity handling of IoT cannot be achieved in a single broadcast authentication protocol. This paper presents a new hybrid protocol called Hybrid Two-level µ-timed-efficient stream loss-tolerant authentication (Hybrid TLI-µTESLA) protocol, which maximizes the benefits of the previous TESLA protocol variants, including scalability support and immediate authentication of Multilevel-µTESLA protocol and continuous authentication with minimal computation overhead of enhanced Inf-TESLA protocol. The inclusion of three different keychains and checking criteria of the packets in the Hybrid TLI-µTESLA protocol enabled resistance against Masquerading, Modification, Man-in-the-Middle, Brute-force, and DoS attacks. A solution for the authentication problem in the first and last packets of the high-level and low-level keychains of the Multilevel-µTESLA protocol was also proposed. The simulation analysis was performed using Java, where we compared the Hybrid TLI-µTESLA protocol with other variants for time complexity and computation overhead at the sender and receiver sides. We also conducted a comparative analysis between two hash functions, SHA-2 and SHA-3, and assessed the feasibility of the proposed protocol in the forthcoming 6G technology. The results demonstrated the superiority of the proposed protocol over other variants in terms of immediate and continuous authentication, scalability, cybersecurity, lifetime, network performance, and compatibility with 5G and 6G IoT generations.
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Affiliation(s)
- Khouloud Eledlebi
- Center for Cyber-Physical Systems, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
| | - Ahmed Adel Alzubaidi
- Department of Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
| | - Chan Yeob Yeun
- Center for Cyber-Physical Systems, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
- Department of Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
| | - Ernesto Damiani
- Center for Cyber-Physical Systems, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
- Department of Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
| | - Victor Mateu
- Technology Innovation Institute, Abu Dhabi P.O. Box 9639, United Arab Emirates
- Cryptography and Graphs Group, Universitat de Lleida, 25001 Lleida, Spain
| | - Yousof Al-Hammadi
- Center for Cyber-Physical Systems, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
- Department of Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
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11
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Multiple Concurrent Slotframe Scheduling for Wireless Power Transfer-Enabled Wireless Sensor Networks. SENSORS 2022; 22:s22124520. [PMID: 35746301 PMCID: PMC9229870 DOI: 10.3390/s22124520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/08/2022] [Accepted: 06/12/2022] [Indexed: 11/23/2022]
Abstract
This paper presents a multiple concurrent slotframe scheduling (MCSS) protocol for wireless power transfer (WPT)-enabled wireless sensor networks. The MCSS supports a cluster-tree network topology composed of heterogeneous devices, including hybrid access points (HAPs) serving as power transmitting units and sensor nodes serving as power receiving units as well as various types of traffic, such as power, data, and control messages (CMs). To this end, MCSS defines three types of time-slotted channel hopping (TSCH) concurrent slotframes: the CM slotframe, HAP slotframe, and WPT slotframe. These slotframes are used for CM traffic, inter-cluster traffic, and intra-cluster traffic, respectively. In MCSS, the length of each TSCH concurrent slotframe is set to be mutually prime to minimize the overlap between cells allocated in the slotframes, and its transmission priority is determined according to the characteristics of transmitted traffic. In addition, MCSS determines the WPT slotframe length, considering the minimum number of power and data cells required for energy harvesting and data transmission of sensor nodes and the number of overprovisioned cells needed to compensate for overlap between cells. The simulation results demonstrated that MCSS outperforms the legacy TSCH medium access control protocol and TSCH multiple slotframe scheduling (TMSS) for the average end-to-end delay, aggregate throughput, and average harvested energy.
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12
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A Bibliometric Analysis and Review of Resource Management in Internet of Water Things: The Use of Game Theory. WATER 2022. [DOI: 10.3390/w14101636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
To understand the current state of research and to also reveal the challenges and opportunities for future research in the field of internet of water things for water quality monitoring, in this study, we conduct a bibliometric analysis and a comprehensive review of the published research from 2012 to 2022 on internet of water things for water quality monitoring. The bibliometric analysis method was used to analyze the collected published papers from the Scopus database. This helped to determine the majority of research topics in the internet of water things for water quality monitoring research field. Subsequently, an in depth comprehensive review of the relevant literature was conducted to provide insight into recent advances in internet of water things for water quality monitoring, and to also determine the research gaps in the field. Based on the comprehensive review of literature, we identified that reviews of the research topic of resource management in internet of water things for water quality monitoring is less common. Hence, this study aimed to fill this research gap in the field of internet of water things for water quality monitoring. To address the resource management challenges associated with the internet of water things designed for water quality monitoring applications, this paper is focused on the use of game theory methods. Game theory methods are embedded with powerful mathematical techniques that may be used to model and analyze the behaviors of various individual, or any group, of water quality sensors. Additionally, various open research issues are pointed out as future research directions.
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Pattnaik SK, Samal SR, Bandopadhaya S, Swain K, Choudhury S, Das JK, Mihovska A, Poulkov V. Future Wireless Communication Technology towards 6G IoT: An Application-Based Analysis of IoT in Real-Time Location Monitoring of Employees Inside Underground Mines by Using BLE. SENSORS (BASEL, SWITZERLAND) 2022; 22:3438. [PMID: 35591138 PMCID: PMC9103828 DOI: 10.3390/s22093438] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 02/06/2023]
Abstract
In recent years, the IoT has emerged as the most promising technology in the key evolution of industry 4.0/industry 5.0, smart home automation (SHA), smart cities, energy savings and many other areas of wireless communication. There is a massively growing number of static and mobile IoT devices with a diversified range of speed and bandwidth, along with a growing demand for high data rates, which makes the network denser and more complicated. In this context, the next-generation communication technology, i.e., sixth generation (6G), is trying to build up the base to meet the imperative need of future network deployment. This article adopts the vision for 6G IoT systems and proposes an IoT-based real-time location monitoring system using Bluetooth Low Energy (BLE) for underground communication applications. An application-based analysis of industrial positioning systems is also presented.
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Affiliation(s)
- Sushant Kumar Pattnaik
- School of Electronics Engineering, KIIT University, Bhubaneswar 751024, India; (S.K.P.); (J.K.D.)
| | - Soumya Ranjan Samal
- Faculty of Telecommunications, Technical University of Sofia, 1756 Sofia, Bulgaria;
- Department of Electronics & Communication Engineering, Silicon Institute of Technology, Bhubaneswar 751024, India
| | | | - Kaliprasanna Swain
- Department of Electronics & Communication Engineering, Gandhi Institute for Technological Advancements, Bhubaneswar 752054, India;
| | - Subhashree Choudhury
- Department of Electrical and Electronics Engineering, Siksha ‘O’ Anusandhan, Bhubaneswar 751030, India;
| | - Jitendra Kumar Das
- School of Electronics Engineering, KIIT University, Bhubaneswar 751024, India; (S.K.P.); (J.K.D.)
| | - Albena Mihovska
- Department of Business Development & Technologies, Aarhus University, 8000 Aarhus, Denmark;
| | - Vladimir Poulkov
- Faculty of Telecommunications, Technical University of Sofia, 1756 Sofia, Bulgaria;
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Han B, Ran F, Li J, Yan L, Shen H, Li A. A Novel Adaptive Cluster Based Routing Protocol for Energy-Harvesting Wireless Sensor Networks. SENSORS 2022; 22:s22041564. [PMID: 35214461 PMCID: PMC8877631 DOI: 10.3390/s22041564] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/27/2022] [Accepted: 02/14/2022] [Indexed: 02/04/2023]
Abstract
With the various applications of the Internet of Things, research into wireless sensor networks (WSNs) has become increasingly important. However, because of their limited energy, the communication abilities of the wireless nodes distributed in the WSN are limited. The main task of WSNs is to collect more data from targets in an energy-efficient way, because the battery replacement of large amounts of nodes is a labor-consuming work. Although the life of WSNs can be prolonged through energy-harvesting (EH) technology, it is necessary to design an energy-efficient routing protocol for the energy harvesting-based wireless sensor networks (EH-WSNs) as the nodes would be unavailable in the energy harvesting phase. A certain number of unavailable nodes would cause a coverage hole, thereby affecting the WSN’s monitoring function of the target environment. In this paper, an adaptive hierarchical-clustering-based routing protocol for EH-WSNs (HCEH-UC) is proposed to achieve uninterrupted coverage of the target region through the distributed adjustment of the data transmission. Firstly, a hierarchical-clustering-based routing protocol is proposed to balance the energy consumption of nodes. Then, a distributed alternation of working modes is proposed to adaptively control the number of nodes in the energy-harvesting mode, which could lead to uninterrupted target coverage. The simulation experimental results verify that the proposed HCEH-UC protocol can prolong the maximal lifetime coverage of WSNs compared with the conventional routing protocol and achieve uninterrupted target coverage using energy-harvesting technology.
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Affiliation(s)
- Bing Han
- Department of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, China; (B.H.); (F.R.); (L.Y.)
- Shanghai Institute of Technical Physics Academy of Sciences, Shanghai 200083, China
- Key Laboratory of Infrared System Detection and Imaging Technology, Chinese Academy of Sciences, Shanghai 200083, China
| | - Feng Ran
- Department of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, China; (B.H.); (F.R.); (L.Y.)
| | - Jiao Li
- Department of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, China; (B.H.); (F.R.); (L.Y.)
- Correspondence: (J.L.); (A.L.)
| | - Limin Yan
- Department of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, China; (B.H.); (F.R.); (L.Y.)
| | - Huaming Shen
- Shanghai Spaceflight Electronic Communication Equipment Research Institute, Shanghai 201109, China;
| | - Ang Li
- The College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 201418, China
- Correspondence: (J.L.); (A.L.)
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Alves L, Ferreira Cruz E, Lopes SI, Faria PM, Rosado da Cruz AM. Towards circular economy in the textiles and clothing value chain through blockchain technology and IoT: A review. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2022; 40:3-23. [PMID: 34708680 PMCID: PMC8832563 DOI: 10.1177/0734242x211052858] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
The textile and clothing industry sector has today a big environmental impact, not only due to the consumption of water and the use of toxic chemicals but also due to the increasing levels of textile waste. One way to reduce the problem is to circularise the, currently linear, textile and clothing value chain, by using discarded clothes as raw material for the production of new clothes, transforming it into a model of circular economy. This way, while reducing the need to produce new raw materials (e.g. cotton), the problem of textile waste produced is also reduced, thus contributing to a more sustainable industry. In this article, we review the current approaches for traceability in the textile and clothing value chain, and study a set of technologies we deem essential for promoting the circular economy in this value chain - namely, the blockchain technology - for registering activities on traceable items through the value chain, and the Internet of Things (IoT) technology, for easily identifying the traceable items' digital twins.
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Affiliation(s)
- Luís Alves
- IPVC – Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
| | - Estrela Ferreira Cruz
- IPVC – Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
- Algoritmi Research Centre, Escola de Engenharia, Universidade do Minho, Guimarães, Portugal
| | - Sérgio I Lopes
- IPVC – Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
- IT – Instituto de Telecomunicações, Aveiro, Portugal
| | - Pedro M Faria
- IPVC – Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
| | - António Miguel Rosado da Cruz
- IPVC – Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
- Algoritmi Research Centre, Escola de Engenharia, Universidade do Minho, Guimarães, Portugal
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PSON: A Serialization Format for IoT Sensor Networks. SENSORS 2021; 21:s21134559. [PMID: 34283115 PMCID: PMC8271575 DOI: 10.3390/s21134559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/28/2021] [Accepted: 06/30/2021] [Indexed: 11/16/2022]
Abstract
In many Internet of Things (IoT) environments, the lifetime of a sensor is linked to its power supply. Sensor devices capture external information and transmit it. They also receive messages with control commands, which means that one of the largest computational overheads of sensor devices is spent on data serialization and deserialization tasks, as well as data transmission. The simpler the serialization/deserialization and the smaller the size of the information to be transmitted, the longer the lifetime of the sensor device and, consequently, the longer the service life. This paper presents a new serialization format (PSON) for these environments, which simplifies the serialization/deserialization tasks and minimizes the messages to be sent/received. The paper presents evaluation results with the most popular serialization formats, demonstrating the improvement obtained with the new PSON format.
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Ultra-Low-Power Wide Range Backscatter Communication Using Cellular Generated Carrier. SENSORS 2021; 21:s21082663. [PMID: 33920074 PMCID: PMC8069532 DOI: 10.3390/s21082663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/02/2021] [Accepted: 04/07/2021] [Indexed: 11/18/2022]
Abstract
With the popularization of Internet-of-things (IoT) and wireless communication systems, a diverse set of applications in smart cities are emerging to improve the city-life. These applications usually require a large coverage area and minimal operation and maintenance cost. To this end, the recently emerging backscatter communication (BC) is gaining interest in both industry and academia as a new communication paradigm that provides high energy efficient communications that may even work in a battery-less mode and, thus, it is well suited for smart city applications. However, the coverage of BC in urban area deployments is not available, and the feasibility of its utilization for smart city applications is not known. In this article, we present a comprehensive coverage study of a practical cellular carrier-based BC system for indoor and outdoor scenarios in a downtown area of a Helsinki city. In particular, we evaluate the coverage outage performance of different low-power and wide area technologies, i.e., long range (LoRa) backscatter, arrow band-Internet of Things (NB-IoT), and Bluetooth low energy (BLE) based BC at different frequencies of operation. To do so, we carry out a comprehensive campaign of simulations while using a sophisticated three-dimensional (3D) ray tracing (RT) tool, ITU outdoor model, and 3rd generation partnership project (3GPP) indoor hotspot model. This study also covers the energy harvesting aspects of backscatter device, and it highlights the importance of future backscatter devices with high energy harvesting efficiency. The simulation results and discussion provided in this article will be helpful in understanding the coverage aspects of practical backscatter communication system in a smart city environment.
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Security Vulnerabilities in LPWANs—An Attack Vector Analysis for the IoT Ecosystem. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11073176] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Due to its pervasive nature, the Internet of Things (IoT) is demanding for Low Power Wide Area Networks (LPWAN) since wirelessly connected devices need battery-efficient and long-range communications. Due to its low-cost and high availability (regional/city level scale), this type of network has been widely used in several IoT applications, such as Smart Metering, Smart Grids, Smart Buildings, Intelligent Transportation Systems (ITS), SCADA Systems. By using LPWAN technologies, the IoT devices are less dependent on common and existing infrastructure, can operate using small, inexpensive, and long-lasting batteries (up to 10 years), and can be easily deployed within wide areas, typically above 2 km in urban zones. The starting point of this work was an overview of the security vulnerabilities that exist in LPWANs, followed by a literature review with the main goal of substantiating an attack vector analysis specifically designed for the IoT ecosystem. This methodological approach resulted in three main contributions: (i) a systematic review regarding cybersecurity in LPWANs with a focus on vulnerabilities, threats, and typical defense strategies; (ii) a state-of-the-art review on the most prominent results that have been found in the systematic review, with focus on the last three years; (iii) a security analysis on the recent attack vectors regarding IoT applications using LPWANs. Results have shown that LPWANs communication technologies contain security vulnerabilities that can lead to irreversible harm in critical and non-critical IoT application domains. Also, the conception and implementation of up-to-date defenses are relevant to protect systems, networks, and data.
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Kanoun O, Bradai S, Khriji S, Bouattour G, El Houssaini D, Ben Ammar M, Naifar S, Bouhamed A, Derbel F, Viehweger C. Energy-Aware System Design for Autonomous Wireless Sensor Nodes: A Comprehensive Review. SENSORS 2021; 21:s21020548. [PMID: 33466681 PMCID: PMC7828785 DOI: 10.3390/s21020548] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/09/2021] [Accepted: 01/10/2021] [Indexed: 12/15/2022]
Abstract
Nowadays, wireless sensor networks are becoming increasingly important in several sectors including industry, transportation, environment and medicine. This trend is reinforced by the spread of Internet of Things (IoT) technologies in almost all sectors. Autonomous energy supply is thereby an essential aspect as it decides the flexible positioning and easy maintenance, which are decisive for the acceptance of this technology, its wide use and sustainability. Significant improvements made in the last years have shown interesting possibilities for realizing energy-aware wireless sensor nodes (WSNs) by designing manifold and highly efficient energy converters and reducing energy consumption of hardware, software and communication protocols. Using only a few of these techniques or focusing on only one aspect is not sufficient to realize practicable and market relevant solutions. This paper therefore provides a comprehensive review on system design for battery-free and energy-aware WSN, making use of ambient energy or wireless energy transmission. It addresses energy supply strategies and gives a deep insight in energy management methods as well as possibilities for energy saving on node and network level. The aim therefore is to provide deep insight into system design and increase awareness of suitable techniques for realizing battery-free and energy-aware wireless sensor nodes.
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Affiliation(s)
- Olfa Kanoun
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
- Correspondence:
| | - Sonia Bradai
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
| | - Sabrine Khriji
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
| | - Ghada Bouattour
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
| | - Dhouha El Houssaini
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
| | - Meriam Ben Ammar
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
| | - Slim Naifar
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
| | - Ayda Bouhamed
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
| | - Faouzi Derbel
- Smart Diagnostic and Online Monitoring, Leipzig University of Applied Sciences, Wächterstrasse 13, 04107 Leipzig, Germany;
| | - Christian Viehweger
- Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Straße 70, 09126 Chemnitz, Germany; (S.B.); (S.K.); (G.B.); (D.E.H.); (M.B.A.); (S.N.); (A.B.); (C.V.)
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A Novel Charging Method for Underwater Batteryless Sensor Node Networks. SENSORS 2021; 21:s21020557. [PMID: 33466853 PMCID: PMC7830110 DOI: 10.3390/s21020557] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 11/17/2022]
Abstract
In this paper, we present a novel charging method for underwater batteryless sensor node networks. The target application is a practical underwater sensor network for oceanic fish farms. The underwater sections of the network use a wireless power transfer system based on the ISO 11784/11785 HDX standard for supplying energy to the batteryless sensor nodes. Each sensor has an accumulator capacitor, which is charged for voltage supplying to the sensor node. A new distributed charging scheme is proposed and discussed in detail to reduce the required time to charge all sensor nodes of the underwater sections. One important key is its decentralized control of the charging process. The proposal is based on the self disconnection ability of each sensor node from the charging network. The second important key is that the hardware implementation of this new feature is quite simple and only requires to include a minimal circuitry in parallel to the current sensor node antenna while the rest of the sensor network remains unaltered. The proposed charging scheme is evaluated using real corner cases from practical oceanic fish farms sensor networks. The results from experiments demonstrate that it is possible to charge up to 10 sensor nodes which is the double charging capability than previous research presented. In the same conditions as the approach found in the literature, it represents reaching an ocean depth of 60 m. In terms of energy, in case of an underwater network with 5 sensors to reach 30 m deep, the proposed charging scheme requires only a 25% of the power required using the traditional approach.
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García-Gangoso F, Blanco-Velasco M, Cruz-Roldán F. Formulation and Performance Analysis of Broadband and Narrowband OFDM-Based PLC Systems. SENSORS 2021; 21:s21010290. [PMID: 33406684 PMCID: PMC7795674 DOI: 10.3390/s21010290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/28/2020] [Accepted: 12/30/2020] [Indexed: 11/16/2022]
Abstract
The aim of this paper is to formulate the physical layer of the broadband and narrowband power line communication (PLC) systems described in standards IEEE 1901 and IEEE 1901.2, which address new communication technologies over electrical networks for Smart Grid and Internet of Things applications. Specifically, this paper presents a mathematical formulation by means of matrices of a transmitter and receiver system based on windowed OFDM. The proposed formulation is essential for obtaining the input-output relation, as well as an analysis of the interference present in the system. It is very useful for simulating PLC systems using software designed to operate primarily on whole matrices and arrays, such as Matlab. In addition, it eases the analysis and design of different receiver configurations, simply by modifying or adding a matrix. Since the relevant standards only describe the blocks corresponding to the transmitter, and leave the set-up of the receiver open to the manufacturer, we analysed four different possible schemes that include window functions in different configurations. In simulations, the behaviour of each of these schemes is analysed in terms of bit error and achievable data rates using artificial and real noises.
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