Lighting environmental assessment in enclosed spaces based on emotional model

Area of Science:

• Environmental Psychology
• Human-Computer Interaction
• Occupational Health

Background:

• Assessing lighting in enclosed environments is crucial for worker well-being and productivity.
• Emotional monitoring in enclosed spaces is an emerging research area.
• The Circumplex emotion model provides a theoretical framework for understanding emotional states.

Purpose of the Study:

• To investigate the emotional responses of individuals to different lighting settings in an enclosed space.
• To evaluate the effectiveness of subjective (CATA, SCS) and objective (FaceReader) methods for assessing lighting-induced emotions.
• To provide insights for optimizing lighting design in special operating environments.

Main Methods:

• Experimental design with 6 lighting conditions (2 CCT × 3 illuminance levels).
• Subjective assessments using Check-all-that-apply (CATA) and Subjective Coordinate Scale (SCS).
• Objective assessment via facial expression analysis using FaceReader (FRE) software.

Main Results:

• Specific lighting settings (3100 K × 600 lx, 3100 K × 1000 lx, 6500 K × 600 lx) promoted relaxed, pleasant emotions.
• High CCT and illuminance (6500 K × 1000 lx) induced excitement and tension.
• Low illumination levels (3100 K × 250 lx, 6500 K × 250 lx) led to fatigue and frustration.
• Objective FRE analysis aligned with subjective reports, confirming method validity.

Conclusions:

• Subjective and objective methods effectively assess emotional responses to enclosed space lighting.
• Lighting parameters significantly influence worker emotions, affecting mood and perceived comfort.
• Findings offer a reference for designing effective lighting strategies in specialized work environments.