Projects per year
Abstract
Temporal light modulation (TLM) and the resulting temporal light artefacts (TLA) can cause problems with health and wellbeing for users of lighting products. Therefore, TLM has to be measured accurately and repeatably. This study investigates important factors influencing the measurement uncertainty of TLM measurements. The study shows how measurement uncertainty on central TLM parameters can have a significant effect on the calculation of TLA. Specifically, we show a linear relationship between DC offset and the expected error. Further we show severe effects of random noise on PstLM on certain waveforms. And lastly, we show a curious effect related to SVM of pulse width modulated signals and the measurement sampling frequency.
Original language | English |
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Title of host publication | Proceedings of the Conference CIE 2021 |
Publisher | CIE - International Commission on Illumination |
Publication date | 2022 |
Pages | 245–254 |
DOIs | |
Publication status | Published - 2022 |
Event | CIE 2021 Midterm Meeting & Conference: Light for Life - Living with Light - Online event, Kuala Lumpur, Malaysia Duration: 27 Sept 2021 → 29 Sept 2021 https://malaysia2021.cie.co.at/ |
Conference
Conference | CIE 2021 Midterm Meeting & Conference |
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Location | Online event |
Country/Territory | Malaysia |
City | Kuala Lumpur |
Period | 27/09/2021 → 29/09/2021 |
Internet address |
Keywords
- Photometry
- Temporal light modulation
- TLM
- Temporal light artefacts
- TLA
- Flicker
- Measurement uncertainty
- Propagation of uncertainty
Fingerprint
Dive into the research topics of 'SENSITIVITY ANALYSIS ON THE EFFECT OF MEASUREMENT NOISE AND SAMPLING FREQUENCY ON THE CALCULATION OF THE TEMPORAL LIGHT ARTEFACTS'. Together they form a unique fingerprint.Projects
- 1 Finished
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MetTLM: EMPIR, 20NRM01, MetTLM, Metrology for Temporal Light Modulation
Thorseth, A. (CoPI), Dam-Hansen, C. (Project Participant) & Corell, D. D. (Project Participant)
01/05/2021 → 30/04/2024
Project: Research
Activities
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Sensitivity analysis on the effect of measurement noise and sampling frequency on the calculation of the temporal light artifacts
Thorseth, A. (Speaker)
27 Sept 2021 → 29 Sept 2021Activity: Talks and presentations › Conference presentations
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CIE TC 2-89: Measurement of Temporal Light Modulation of Light Sources and Lighting Systems (External organisation)
Thorseth, A. (Member)
1 Apr 2018 → …Activity: Membership › Membership of commitees, commissions, boards, councils, associations, organisations, or similar
Datasets
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MetTLM TLM waveform set 1
Bouroussis, C. (Creator), Thorseth, A. (Creator) & Dekker, P. (Creator), Technical University of Denmark, 2 Jun 2023
DOI: 10.5281/zenodo.7707987, https://zenodo.org/record/7707987
Dataset