Optimizing the energy supply of autonomous wireless sensor nodes

Hormann, Leander B.; Buchegger, Thomas; Steger, Christian

doi:10.1109/mess.2014.7010257

Cited by 6 publications

(4 citation statements)

References 15 publications

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“…It can be seen that the weather dependent variation is orders of magnitude DOI 10.5162/ettc2022/8.1 smaller than the location dependent variation inside a room. From previous measurements with a different measurement hardware presented in [3] the seasonal dependent factor ranges approximately from 16.7% to 26.7% between sunny weather condition in summer and winter.…”

Section: Time Dependent Evaluationmentioning

confidence: 93%

“…These sensor nodes should be powered without a wired connection to reduce cost, enhance the flexibility and handling, enable an easy encapsulation for e.g., water tightness, and to reach application areas where cabling is not possible. Thus, they can be powered in two different ways, by batteries and by energy harvesting [3]. Using batteries, the needed energy is supplied with the installation of the sensor nodes and operational time is limited but guaranteed.…”

Section: Introductionmentioning

confidence: 99%

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8.1 Evaluation of Solar-based Energy Harvesting for Indoor IoT Applications

Hörmann¹,

Hölzl²,

Kastl³

et al. 2022

Proceedings - Ettc2022

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Internet-of-Things (IoT) devices and other embedded devices are more and more used to measure different conditions inside of buildings and industrial facilities as well as to monitoring machines or industrial processes. IoT sensors communicate wirelessly and are typically supplied by batteries. Energy harvesting can be used to extend their operational time or enable self-sufficient supply of them. Energy from the environment is converted into electrical energy by energy harvesting devices (EHDs), for example solar cells or thermo-generators. However, the available output power of the EHDs is highly dependent on the mounting location as well as on environmental conditions and may vary greatly over time. Therefore, it is meaningful to evaluate the EHDs at the location of use over a certain period of time in order to characterize them in real world scenarios. This paper presents the evaluation setup and the results of the characterization of four different solar cells at different locations in an office building and at different weather conditions. Furthermore, a method is presented to estimate the possibility to supply embedded device using energy harvesting. The results can be used to simplify the selection of a suitable EHD and the design process of an energy management system. The method is applied on two different use cases to estimate the needed size of the solar cells to enable a continuous supply.

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Section: Time Dependent Evaluationmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

8.1 Evaluation of Solar-based Energy Harvesting for Indoor IoT Applications

Hörmann¹,

Hölzl²,

Kastl³

et al. 2022

Proceedings - Ettc2022

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show abstract

“…Any maintenance needs of nodes should be avoided during a measurement campaign (typically a few hours to several weeks). The wireless sensor nodes are therefore typically powered by batteries or energy harvesting systems (EHSs) [3] and thus severely energy constrained. They have either a limited amount of energy (batteries) or are prone to a low available power (EHSs) [7].…”

Section: Application Scenariomentioning

confidence: 99%

“…Each sensor node measures physical quantities of industrial plants or processes and transmits them wirelessly towards a gateway using a certain communication protocol [1], [2]. The power supply of the wireless sensor nodes can be implemented in two different ways [3]:…”

Section: Introductionmentioning

confidence: 99%

1.2 Evaluation of Energy Harvesting Devices for Industrial Applications

Hormann¹,

Holzl²,

Kastl³

et al. 2020

Proceedings - Ettc2020

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Solar-Based Energy Harvesting and Low-Power Wireless Networks

Hörmann,

Karoliny,

Peterseil

2024

Studies in Computational Intelligence

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In modern industrial applications, machines and facilities, more and more sensors are used to control and optimise the processes. To be flexible and reduce cost, wireless sensors can be used in a broad range of applications. To prevent regular battery replacement, there is the possibility to supply wireless sensors by energy harvesting. In this chapter, we investigate the possibility to use solar-based energy harvesting to supply wireless sensors. For this, we consider four wireless network protocols and evaluate the power consumption using a simple sensor use case with different communication parameters. We further measure how much power can actually be harvested in a typical office environment with natural light. To provide realistic results, different sensor locations as well as seasonal changes are considered. The evaluations are combined to understand what size of solar cell is needed to supply the considered wireless protocols with different configurations.

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Optimizing the energy supply of autonomous wireless sensor nodes

Cited by 6 publications

References 15 publications

8.1 Evaluation of Solar-based Energy Harvesting for Indoor IoT Applications

8.1 Evaluation of Solar-based Energy Harvesting for Indoor IoT Applications

1.2 Evaluation of Energy Harvesting Devices for Industrial Applications

Solar-Based Energy Harvesting and Low-Power Wireless Networks

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