0000000000585937

AUTHOR

Rolf Arne Kjellby

showing 5 related works from this author

Design and implementation of a long-range low-power wake-up radio for IoT devices

2019

In this paper, we present the design and implementation of an on-demand wake-up radio (WuR) for long-range wireless IoT devices to reduce the power consumption, thereby increasing the life time of the devices. A custom narrow-band (NB) low noise amplifier is designed and implemented for WuR. The low-noise amplifier achieves a gain of 31 dB at 1 mA current consumption from a 6 V power supply. The WuR achieves a sensivity of -80 dBm by consuming just 1 mA, thereby optimizing the energy consumption of battery powered long-range IoT devices, hence reducing the power consumption and overall costs when deployed in large scale.

Battery (electricity)business.industryComputer scienceAmplifier010401 analytical chemistrydBmElectrical engineering020206 networking & telecommunications02 engineering and technologyEnergy consumption01 natural sciencesLow-noise amplifier0104 chemical sciencesPower (physics)Range (aeronautics)0202 electrical engineering electronic engineering information engineeringWirelessbusinessInternet of Things2019 IEEE 5th World Forum on Internet of Things (WF-IoT)
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Long-range & Self-powered IoT Devices for Agriculture & Aquaponics Based on Multi-hop Topology

2019

This article presents the prototype design and testing of a long-range, self-powered IoT devices for use in precision agriculture and aquaponics. The devices are designed using the ultra-low power nRF52840 microcontroller with Bluetooth 5 support and ambient energy harvesting. A power of 942µW is harvested in an indoor environment. The devices are therefore suitable for both indoor and outdoor use, as natural sunlight will provide far more energy compared to artificial indoor lights. A line-of-sight range of up to 1.8km is achieved with the use of coded transmissions. However, the coverage area and range can be extended significantly by deploying the devices in multi-hop network topology. T…

Sunlight021110 strategic defence & security studiesComputer sciencebusiness.industryReal-time computing0211 other engineering and technologies020206 networking & telecommunicationsCloud computing02 engineering and technologyNetwork topologylaw.inventionBluetoothlawAgriculture0202 electrical engineering electronic engineering information engineeringPrecision agriculturebusinessEnergy harvestingWireless sensor networkEfficient energy use2019 IEEE 5th World Forum on Internet of Things (WF-IoT)
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Self-powered IoT Device based on Energy Harvesting for Remote Applications

2018

In this paper, we present the design and prototype implementation of self-powered Internet of Things (IoT) device based on energy harvesting from a small solar panel of size 63mm x 63mm and 0.36W for remote applications. These IoT devices can be deployed in remote places within the range of a gateway. A complete proof of concept IoT device based on ambient energy harvesting is designed, prototyped and tested with super capacitors and Lithium cells in star topology. Based on the measurements, the IoT device can potentially last for one year with 55 seconds transmission interval with the fully charged 120mAh coin cell battery. On the other hand, a fully charged single 5F supercapacitor lasts …

Star networkBattery (electricity)business.industryComputer science020209 energyNode (networking)020208 electrical & electronic engineeringElectrical engineering02 engineering and technologylaw.inventionCapacitorTransmission (telecommunications)lawProof of conceptDefault gateway0202 electrical engineering electronic engineering information engineeringbusinessEnergy harvesting2018 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS)
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Self-Powered IoT Device for Indoor Applications

2018

This paper presents a proof of concept for selfpowered Internet of Things (IoT) device, which is maintenance free and completely self-sustainable through energy harvesting. These IoT devices can be deployed in large scale and placed anywhere as long as they are in range of a gateway, and as long as there is sufficient light levels for the solar panel, such as indoor lights. A complete IoT device is designed, prototyped and tested. The IoT device can potentially last for more than 5 months (transmission interval of 30 seconds) on the coin cell battery (capacity of 120mAh) without any energy harvesting, sufficiently long for the dark seasons of the year. The sensor node contains ultra-low pow…

Battery (electricity)business.industryComputer science020209 energy020208 electrical & electronic engineeringElectrical engineering02 engineering and technologyTransmission (telecommunications)Proof of conceptSensor nodeDefault gateway0202 electrical engineering electronic engineering information engineeringWirelessbusinessWireless sensor networkEnergy harvesting2018 31st International Conference on VLSI Design and 2018 17th International Conference on Embedded Systems (VLSID)
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Development, Deployment & Evaluation of Wireless IoT Devices with Energy Harvesting

2018

Master's thesis Information- and communication technology IKT590 - University of Agder 2018 Konfidensiell til / confidential until 01.07.2023

IKT590VDP::Teknologi: 500::Informasjons- og kommunikasjonsteknologi: 550
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