scholarly journals Wireless Positioning in IoT: A Look at Current and Future Trends

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2470 ◽  
Author(s):  
Pedro Silva ◽  
Ville Kaseva ◽  
Elena Lohan
Keyword(s):  
Asset Management ◽  
Large Scale ◽  
Low Cost ◽  
Battery Life ◽  
Power Devices ◽  
Smart Lighting ◽  
Iot Applications ◽  
Simulation Based ◽  
Wireless Positioning ◽  
The Internet Of Things

Connectivity solutions for the Internet of Things (IoT) aim to support the needs imposed by several applications or use cases across multiple sectors, such as logistics, agriculture, asset management, or smart lighting. Each of these applications has its own challenges to solve, such as dealing with large or massive networks, low and ultra-low latency requirements, long battery life requirements (i.e., more than ten years operation on battery), continuously monitoring of the location of certain nodes, security, and authentication. Hence, a part of picking a connectivity solution for a certain application depends on how well its features solve the specific needs of the end application. One key feature that we see as a need for future IoT networks is the ability to provide location-based information for large-scale IoT applications. The goal of this paper is to highlight the importance of positioning features for IoT applications and to provide means of comparing and evaluating different connectivity protocols in terms of their positioning capabilities. Our compact and unified analysis ends with several case studies, both simulation-based and measurement-based, which show that high positioning accuracy on low-cost low-power devices is feasible if one designs the system properly.

scholarly journals Security Challenges and Countermeasures for the Heterogeneity of IoT Applications

2019 ◽  
Vol 1 (2) ◽  
pp. 16 ◽  
Author(s):  
Deepak Choudhary
Keyword(s):  
Internet Of Things ◽  
Large Scale ◽  
Physical World ◽  
The Internet ◽  
Smart Objects ◽  
Security Issues ◽  
Iot Applications ◽  
Security Challenges ◽  
The Internet Of Things

The Internet of Things (IoT) enables the integration of data from virtual and physical worlds. It involves smart objects that can understand and react to their environment in a variety of industrial, commercial and household settings. As the IoT expands the number of connected devices, there is the potential to allow cyber-attackers into the physical world in which we live, as they seize on security holes in these new systems. New security issues arise through the heterogeneity  of  IoT  applications and devices and their large-scale deployment.

scholarly journals Self-switching diodes as RF rectifiers: evaluation methods and current progress

2019 ◽  
Vol 8 (2) ◽  
pp. 396-404 ◽  
Author(s):  
Nor Farhani Zakaria ◽  
Shahrir Rizal Kasjoo ◽  
Muammar Mohamad Isa ◽  
Zarimawaty Zailan ◽  
Mohd Khairuddin Md Arshad ◽  
...  
Keyword(s):  
Internet Of Things ◽  
High Frequency ◽  
Power Efficiency ◽  
Wireless Transmission ◽  
The Internet ◽  
Power Devices ◽  
New Paradigm ◽  
Iot Applications ◽  
Design Simplicity ◽  
The Internet Of Things

In the advancement of the Internet of Things (IoT) applications, widespread uses and applications of devices require higher frequency connectivity to be explored and exploited. Furthermore, the size, weight, power and cost demands for the IoT ecosystems also creates a new paradigm for the hardware where improved power efficiency and efficient wireless transmission needed to be investigated and made feasible. As such, functional microwave detectors to detect and rectify the signals transmitted in higher frequency regions are crucial. This paper reviewed the practicability of self switching diodes as Radio Frequency (RF) rectifiers. The existing methods used in the evaluation of the rectification performance and cut-off frequency are reviewed, and current achievements are then concluded. The works reviewed in this paper highlights the functionality of SSD as a RF rectifier with design simplicity, which may offer cheaper alternatives in current high frequency rectifying devices for application in low-power devices.

scholarly journals Sustainable Fully Printed UV Sensors on Cork Using Zinc Oxide/Ethylcellulose Inks

Micromachines ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 601 ◽  
Author(s):  
Joana Figueira ◽  
Cristina Gaspar ◽  
José Tiago Carvalho ◽  
Joana Loureiro ◽  
Elvira Fortunato ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Flexible Electronics ◽  
Large Scale ◽  
Low Cost ◽  
Scale Production ◽  
Large Scale Production ◽  
Production Techniques ◽  
Uv Lamp ◽  
Uv Sensors ◽  
The Internet Of Things

Low-cost and large-scale production techniques for flexible electronics have evolved greatly in recent years, having great impact in applications such as wearable technology and the internet of things. In this work, we demonstrate fully screen-printed UV photodetectors, successfully fabricated at a low temperature on a cork substrate, using as the active layer a mixture of zinc oxide nanoparticles and ethylcellulose. The photoresponse under irradiation with a UV lamp with peak emission at 302 nm exhibited a quasi-quadratic behavior directly proportional to the applied voltage, with a photocurrent of about 5.5 and 20 μA when applying 1.5 V and 5 V, respectively. The dark current stayed below 150 nA, while the rise and falling times were, respectively, below 5 and 2 s for both applied voltages. The performance was stable over continuous operation and showed a degradation of only 9% after 100 bending cycles in a 45 mm radius test cylinder. These are promising results regarding the use of this type of sensor in wearable applications such as cork hats, bracelets, or bags.

scholarly journals Efficient Communication Scheme for Bluetooth Low Energy in Large Scale Applications

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6371
Author(s):  
Maciej Nikodem ◽  
Mariusz Slabicki ◽  
Marek Bawiec
Keyword(s):  
Energy Efficiency ◽  
Large Scale ◽  
Real Life ◽  
Low Energy ◽  
Typical Application ◽  
Bluetooth Low Energy ◽  
Iot Applications ◽  
Communication Scheme ◽  
Improve Device ◽  
The Internet Of Things

The use of Bluetooth Low Energy (BLE) in the Internet-of-Things (IoT) applications has become widespread and popular. This has resulted in the increased number of deployed BLE devices. To ensure energy efficiency, applications use connectionless communication where nodes broadcast information using advertisement messages. As the BLE devices compete for access to spectrum, collisions are inevitable and methods that improve device coexistence are required. This paper proposes a connectionless communication scheme for BLE that improves communication efficiency in IoT applications where a large number of BLE nodes operate in the same area and communicate simultaneously to a central server. The proposed scheme is based on an active scanning mode and is compared with a typical application where passive scanning mode is used. The evaluation is based on numerical simulations and real-life evaluation of a network containing 150 devices. The presented scheme significantly reduces the number of messages transmitted by each node and decreases packet loss ratio. It also improves the energy efficiency and preserves the battery of BLE nodes as they transmit fewer radio messages and effectively spent less time actively communicating. The proposed connectionless BLE communication scheme can be applied to a large variety of IoT applications improving their performance and coexistence with other devices operating in the 2.4 GHz band. Additionally, the implementation complexity and costs of the proposed communication scheme are negligible.

scholarly journals A Review of Unmanned System Technologies with Its Application to Aquaculture Farm Monitoring and Management

Drones ◽  
2022 ◽  
Vol 6 (1) ◽  
pp. 12
Author(s):  
Naomi A. Ubina ◽  
Shyi-Chyi Cheng
Keyword(s):  
Internet Of Things ◽  
Large Scale ◽  
Low Cost ◽  
Labor Cost ◽  
Unmanned Vehicles ◽  
The Internet ◽  
Aquaculture Farm ◽  
Quality Water ◽  
Vehicle Technologies ◽  
The Internet Of Things

This paper aims to provide an overview of the capabilities of unmanned systems to monitor and manage aquaculture farms that support precision aquaculture using the Internet of Things. The locations of aquaculture farms are diverse, which is a big challenge on accessibility. For offshore fish cages, there is a difficulty and risk in the continuous monitoring considering the presence of waves, water currents, and other underwater environmental factors. Aquaculture farm management and surveillance operations require collecting data on water quality, water pollutants, water temperature, fish behavior, and current/wave velocity, which requires tremendous labor cost, and effort. Unmanned vehicle technologies provide greater efficiency and accuracy to execute these functions. They are even capable of cage detection and illegal fishing surveillance when equipped with sensors and other technologies. Additionally, to provide a more large-scale scope, this document explores the capacity of unmanned vehicles as a communication gateway to facilitate offshore cages equipped with robust, low-cost sensors capable of underwater and in-air wireless connectivity. The capabilities of existing commercial systems, the Internet of Things, and artificial intelligence combined with drones are also presented to provide a precise aquaculture framework.

scholarly journals A Robust, Low-Cost and Secure Authentication Scheme for IoT Applications

Cryptography ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 8
Author(s):  
Md Jubayer al Mahmod ◽  
Ujjwal Guin
Keyword(s):  
Low Cost ◽  
Resource Limitation ◽  
Computational Power ◽  
Iot Applications ◽  
Up States ◽  
On Chip ◽  
Software Overhead ◽  
Private Network ◽  
Secure Authentication ◽  
The Internet Of Things

The edge devices connected to the Internet of Things (IoT) infrastructures are increasingly susceptible to piracy. These pirated edge devices pose a serious threat to security, as an adversary can get access to the private network through these non-authentic devices. It is necessary to authenticate an edge device over an unsecured channel to safeguard the network from being infiltrated through these fake devices. The implementation of security features demands extensive computational power and a large hardware/software overhead, both of which are difficult to satisfy because of inherent resource limitation in the IoT edge devices. This paper presents a low-cost authentication protocol for IoT edge devices that exploits power-up states of built-in SRAM for device fingerprint generations. Unclonable ID generated from the on-chip SRAM could be unreliable, and to circumvent this issue, we propose a novel ID matching scheme that alleviates the need for enhancing the reliability of the IDs generated from on-chip SRAMs. Security and different attack analysis show that the probability of impersonating an edge device by an adversary is insignificant. The protocol is implemented using a commercial microcontroller, which requires a small code overhead. However, no modification of device hardware is necessary.

scholarly journals Low-Power and Low-Cost Environmental IoT Electronic Nose Using Initial Action Period Measurements

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3183 ◽  
Author(s):  
Carlos J. García-Orellana ◽  
Miguel Macías-Macías ◽  
Horacio M. González-Velasco ◽  
Antonio García-Manso ◽  
Ramón Gallardo-Caballero
Keyword(s):  
Electronic Nose ◽  
Low Cost ◽  
Specific Model ◽  
Battery Life ◽  
Sleep State ◽  
Analog To Digital ◽  
Current Consumption ◽  
Initial Action ◽  
On Chip ◽  
The Internet Of Things

In this work, we present a complete hardware development and current consumption study of a portable electronic nose designed for the Internet-of-Things (IoT). Thanks to the technique of measuring in the initial action period, it can be reliably powered with a moderate-sized battery. The system is built around the well-known SoC (System on Chip) ESP8266EX, using low-cost electronics and standard sensors from Figaro’s TGS26xx series. This SoC, in addition to a powerful microcontroller, provides Wi-Fi connectivity, making it very suitable for IoT applications. The system also includes a precision analog-to-digital converter for the measurements and a charging module for the lithium battery. During its operation, the designed software takes measurements periodically, and keeps the microcontroller in deep-sleep state most of the time, storing several measurements before uploading them to the cloud. In the experiments and tests carried out, we have focused our work on the measurement and optimization of current consumption, with the aim of extending the battery life. The results show that taking measurements every 4 min and uploading data every five measurements, the battery of 750 mAh needs to be charged approximately once a month. Despite the fact that we have used a specific model of gas sensor, this methodology is quite generic and could be extended to other sensors with lower consumption, increasing very significantly the duration of the battery.

scholarly journals IOT based application for monitoring electricity power consumption in home appliances

2019 ◽  
Vol 9 (6) ◽  
pp. 4988 ◽  
Author(s):  
Korakot Luechaphonthara ◽  
Vijayalakshmi A
Keyword(s):  
Internet Of Things ◽  
Large Scale ◽  
Low Cost ◽  
Electronic Devices ◽  
Electricity Consumption ◽  
Physical Parameters ◽  
Smart Objects ◽  
Home Appliances ◽  
Electricity Power ◽  
The Internet Of Things

<p><span lang="EN">Internet of Things is one of the emerging techniques that help in bridging the gap between the physical and cyber world. In the Internet of Things, the different smart objects connected, communicate with each other, data is gathered from the smart objects and based on the need of the users, and the data gathered are queried and sent back to the user. IoT helps in monitoring electrical and physical parameters. Electricity consumption from electronic devices is one among such parameters that need to be monitored. The development of energy efficient schemes for the IoT is a challenging issue as the IoT becomes more complex due to its large scale the current techniques of wireless sensor networks cannot be applied directly to the IoT. To achieve the green networked IoT, this paper proposes a Wi-Fi enabled simple low cost electricity monitoring device that can monitor the electricity consumption on home appliances which helps to analyses the consumption of electricity on a daily and weekly basis. </span></p>

scholarly journals Energy-Efficient Word-Serial Processor for Field Multiplication and Squaring Suitable for Lightweight Authentication Schemes in RFID-Based IoT Applications

2021 ◽  
Vol 11 (15) ◽  
pp. 6938
Author(s):  
Atef Ibrahim ◽  
Fayez Gebali
Keyword(s):  
Radio Frequency Identification ◽  
Large Scale ◽  
Low Cost ◽  
Security And Privacy ◽  
Field Size ◽  
Iot Applications ◽  
Serial Processor ◽  
Authentication Schemes ◽  
Field Multiplication ◽  
Lightweight Authentication

Radio-Frequency Identification (RFID) technology is a crucial technology used in many IoT applications such as healthcare, asset tracking, logistics, supply chain management, assembly, manufacturing, and payment systems. Nonetheless, RFID-based IoT applications have many security and privacy issues restricting their use on a large scale. Many authors have proposed lightweight RFID authentication schemes based on Elliptic Curve Cryptography (ECC) with a low-cost implementation to solve these issues. Finite-field multiplication are at the heart of these schemes, and their implementation significantly affects the system’s overall performance. This article presents a formal methodology for developing a word-based serial-in/serial-out semisystolic processor that shares hardware resources for multiplication and squaring operations in GF(2n). The processor concurrently executes both operations and hence reduces the execution time. Furthermore, sharing the hardware resources provides savings in the area and consumed energy. The acquired implementation results for the field size n=409 indicate that the proposed structure achieves a significant reduction in the area–time product and consumed energy over the previously published designs by at least 32.3% and 70%, respectively. The achieved results make the proposed design more suitable to realize cryptographic primitives in resource-constrained RFID devices.

scholarly journals Fully Screen Printed Stretchable Electrochromic Displays

2021 ◽  
Author(s):  
Ulrika Linderhed ◽  
Ioannis Petsagkourakis ◽  
Peter Andersson Ersman ◽  
Valerio Beni ◽  
Klas Tybrandt
Keyword(s):  
Internet Of Things ◽  
Large Scale ◽  
Low Cost ◽  
Cost Effective ◽  
The Internet ◽  
Wearable Electronics ◽  
Efficient Manner ◽  
Cost Efficient ◽  
The Internet Of Things ◽  
Screen Printed

Abstract The advent of the Internet of Things and the growing interest in continuous monitoring by wearables have created a need for conformable and stretchable displays. Electrochromic displays (ECDs) are receiving attention as a cost-effective solution for many simple applications. However, stretchable ECDs have yet to be produced in a robust, large scale and cost-efficient manner. Here we develop a process for making fully screen printed stretchable ECDs. By evaluating commercially available inks with respect to electromechanical properties, including electrochromic PEDOT:PSS inks, our process can be directly applied in the manufacturing of stretchable organic electronic devices. The manufactured ECDs retained colour contrast with useful switching times at static strains up to 50 % and strain cycling up to 30 % strain. To further demonstrate the applicability of the technology, double-digit 7-segment ECDs were produced, which could conform to curved surfaces and be mounted onto stretchable fabrics while remaining fully functional. Based on their simplicity, robustness and processability, we believe that low cost printed stretchable ECDs can be easily scaled up and will find many applications within the rapidly growing markets of wearable electronics and the Internet of Things.

Sign in / Sign up

Export Citation Format

Share Document