Digital implementations for determination of temporal light artefacts of LED luminaires

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2023-11-29
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Language
en
Pages
10
Series
Lighting Research and Technology
Abstract
Flicker and stroboscopic effects caused by a temporally modulated light source may be harmful for the human visual system. Standardized measurement methods have been developed for the related temporal light artefacts of LED luminaires. It was found out that the performance of the International Electrotechnical Commission (IEC) recommended flickermeter implementation is highly dependent on sampling frequency. Novel digital implementations for the flickermeter and stroboscopic effect visibility measure (SVM) were created to remove any inaccuracies. The performance of the novel Aalto implementations does not depend on the sampling frequency when running the test waveforms of the IEC standard through the implementations. As compared with the IEC recommended digital implementations, Aalto flickermeter decreases the average error related to the test waveforms from −0.05 to +0.003, and Aalto SVM meter also decreases the average error by almost two orders of magnitude.
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Funding Information: The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work has been carried out in project 20NRM01 MetTLM that has received funding from the EMPIR program co-financed by the participating states and the European Union’s Horizon 2020 research and innovation program. We also acknowledge support by the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), decision number: 320167. Funding Information: We would like to thank Carsten Dam-Hansen for pointing out the importance of accurate specification of the amplitude of the SVM test waveforms. This work has been carried out in project 20NRM01 MetTLM that has received funding from the EMPIR program co-financed by the participating states and the European Union’s Horizon 2020 research and innovation program. We also acknowledge support by the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), decisionnumber: 320167. Publisher Copyright: © The Chartered Institution of Building Services Engineers 2023.
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Citation
Mantela , V , Nordlund , R , Askola , J , Kärhä , P & Ikonen , E 2023 , ' Digital implementations for determination of temporal light artefacts of LED luminaires ' , Lighting Research and Technology . https://doi.org/10.1177/14771535231212404