Design And Simulation Of A Fuzzy Logic Based Circadian Smart Led Lighting System And Its Potential For Healthcare Facilities
This proof-of-concept research introduces a fuzzy logic-based lighting control system design to illuminate indoor spaces using Light Emitting Diode (LED) lighting technology by replicating outdoor circadian lighting to building indoor spaces. Past research shows circadian lighting affects occupan...
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| Format: | Thesis |
| Language: | en |
| Published: |
2022
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| Subjects: | |
| Online Access: | http://eprints.usm.my/60073/1/SIVACHANDRAN%20AL%20R.PERUMAL%20-%20TESIS24.pdf http://eprints.usm.my/60073/ |
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| author | perumal, Sivachandran R. |
| author_facet | perumal, Sivachandran R. |
| author_sort | perumal, Sivachandran R. |
| building | Hamzah Sendut Library |
| collection | Institutional Repository |
| content_provider | Universiti Sains Malaysia |
| content_source | USM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | This proof-of-concept research introduces a fuzzy logic-based lighting control
system design to illuminate indoor spaces using Light Emitting Diode (LED) lighting
technology by replicating outdoor circadian lighting to building indoor spaces. Past
research shows circadian lighting affects occupants’ well-being by dictating their sleep
and wake patterns. Previous works on replicating outdoor lighting had designers
using classical closed loop control architecture, which required extensive mathematical
modelling of the system dynamics. Fuzzy logic-based control systems costs less, robust,
portable, and easily applicable for complex non-linear control systems without the need
for system modelling. A methodology of autonomous regulation of lighting Correlated
Colour Temperature (CCT) and space illuminance (lux) is applied using a 7×5 fuzzy
rules base matrix using Mamdani max-min compositional operation. The design was
evaluated by simulating a small-scale prototype to analyse the controller’s performance.
Simulation results show the system output matched outdoor chromaticity values and
the deviation from blackbody curve was within ±0.003 range using CCT Duv check.
The system performed at no overshoot (0.0%), rise time and steady state reached at 1st
and 4th iteration, respectively. Potential application at hospital ward are discussed by
correlating with healthcare’s practise and parameters which showed increased facility
efficiencies. Future works may experiment with spectrometric sensors and real time
applications. |
| format | Thesis |
| id | my.usm.eprints.60073 |
| institution | Universiti Sains Malaysia |
| language | en |
| publishDate | 2022 |
| record_format | eprints |
| spelling | my.usm.eprints.60073 http://eprints.usm.my/60073/ Design And Simulation Of A Fuzzy Logic Based Circadian Smart Led Lighting System And Its Potential For Healthcare Facilities perumal, Sivachandran R. TH1-9745 Building construction This proof-of-concept research introduces a fuzzy logic-based lighting control system design to illuminate indoor spaces using Light Emitting Diode (LED) lighting technology by replicating outdoor circadian lighting to building indoor spaces. Past research shows circadian lighting affects occupants’ well-being by dictating their sleep and wake patterns. Previous works on replicating outdoor lighting had designers using classical closed loop control architecture, which required extensive mathematical modelling of the system dynamics. Fuzzy logic-based control systems costs less, robust, portable, and easily applicable for complex non-linear control systems without the need for system modelling. A methodology of autonomous regulation of lighting Correlated Colour Temperature (CCT) and space illuminance (lux) is applied using a 7×5 fuzzy rules base matrix using Mamdani max-min compositional operation. The design was evaluated by simulating a small-scale prototype to analyse the controller’s performance. Simulation results show the system output matched outdoor chromaticity values and the deviation from blackbody curve was within ±0.003 range using CCT Duv check. The system performed at no overshoot (0.0%), rise time and steady state reached at 1st and 4th iteration, respectively. Potential application at hospital ward are discussed by correlating with healthcare’s practise and parameters which showed increased facility efficiencies. Future works may experiment with spectrometric sensors and real time applications. 2022-06 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/60073/1/SIVACHANDRAN%20AL%20R.PERUMAL%20-%20TESIS24.pdf perumal, Sivachandran R. (2022) Design And Simulation Of A Fuzzy Logic Based Circadian Smart Led Lighting System And Its Potential For Healthcare Facilities. PhD thesis, Universiti Sains Malaysia. |
| spellingShingle | TH1-9745 Building construction perumal, Sivachandran R. Design And Simulation Of A Fuzzy Logic Based Circadian Smart Led Lighting System And Its Potential For Healthcare Facilities |
| title | Design And Simulation Of A Fuzzy Logic
Based Circadian Smart Led Lighting
System And Its Potential For
Healthcare Facilities |
| title_full | Design And Simulation Of A Fuzzy Logic
Based Circadian Smart Led Lighting
System And Its Potential For
Healthcare Facilities |
| title_fullStr | Design And Simulation Of A Fuzzy Logic
Based Circadian Smart Led Lighting
System And Its Potential For
Healthcare Facilities |
| title_full_unstemmed | Design And Simulation Of A Fuzzy Logic
Based Circadian Smart Led Lighting
System And Its Potential For
Healthcare Facilities |
| title_short | Design And Simulation Of A Fuzzy Logic
Based Circadian Smart Led Lighting
System And Its Potential For
Healthcare Facilities |
| title_sort | design and simulation of a fuzzy logic
based circadian smart led lighting
system and its potential for
healthcare facilities |
| topic | TH1-9745 Building construction |
| url | http://eprints.usm.my/60073/1/SIVACHANDRAN%20AL%20R.PERUMAL%20-%20TESIS24.pdf http://eprints.usm.my/60073/ |
| url_provider | http://eprints.usm.my/ |