Efficiency of temporal sensor data compression methods to reduce LoRa-based sensor node energy consumption
Olli Väänänen,Timo Hämäläinen +1 more
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TLDR
The results show that temporal compression algorithms are an effective method for reducing the energy consumption of a LoRa sensor node by reducing the number of LoRa transmission periods.Abstract:
Purpose
Minimizing the energy consumption in a wireless sensor node is important for lengthening the lifetime of a battery. Radio transmission is the most energy-consuming task in a wireless sensor node, and by compressing the sensor data in the online mode, it is possible to reduce the number of transmission periods. This study aims to demonstrate that temporal compression methods present an effective method for lengthening the lifetime of a battery-powered wireless sensor node.
Design/methodology/approach
In this study, the energy consumption of LoRa-based sensor node was evaluated and measured. The experiments were conducted with different LoRaWAN data rate parameters, with and without compression algorithms implemented to compress sensor data in the online mode. The effect of temporal compression algorithms on the overall energy consumption was measured.
Findings
Energy consumption was measured with different LoRaWAN spreading factors. The LoRaWAN transmission energy consumption significantly depends on the spreading factor used. The other significant factors affecting the LoRa-based sensor node energy consumption are the measurement interval and sleep mode current consumption. The results show that temporal compression algorithms are an effective method for reducing the energy consumption of a LoRa sensor node by reducing the number of LoRa transmission periods.
Originality/value
This paper presents with a practical case that it is possible to reduce the overall energy consumption of a wireless sensor node by compressing sensor data in online mode with simple temporal compression algorithms.
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Citations
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Proceedings ArticleDOI
Linearity-based Sensor Data Online Compression Methods for Environmental Applications
Olli Väänänen,Timo Hämäläinen +1 more
TL;DR: In this paper , the authors present two new compression algorithms suitable for environmental monitoring and compare them with linearity-based compression algorithms for compressing environmental data in real-world data.
References
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TL;DR: The comparison shows that the BLE offers the best lifetime for all traffic intensities in its capacity range; LoRa achieves long lifetimes behind 802.15.4 and BLE for ultra low traffic intensity; SIGFOX only matches LoRa for very small data sizes.
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TL;DR: This work attempted to identify the rate-determining process for Li+ migration under such low temperatures, so that an optimum electrolyte formulation could be designed to maximize the energy output.
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