WP1 End-user characterization and lighting system specifications - completed

This WP initiated the PILCS project and provides the basis for the following WPs. Specifically, the objective of this WP was to define:

  1. the optimal lighting conditions for different types of activities and individual characteristics such as gender, age, chronotypes and other relevant parameters of the visual system have been defined based on state of the art literature review. These were translated into dynamic, personalized light scenarios over the working day.
  2. the specifications of the PILCS control system in terms of overall design/layout and operational parameters range.

D1.1 – Report on the literature review regarding people’s lighting needs, Confidential Report

D1.2 – Report on the characterization of end-users and working environments, Confidential Report

D1.3 – Report on the PILCS solution requirements based on D1.1 and D1.2, Confidential Report


WP2 Development of PILCS algorithms, models and components – completed

WP2 targeted the development of the PILCS module components. Specifically, we designed all the software and hardware elements, which will be integrated in the final PILCS system. Software components such as OS, user-interface, lighting models and algorithms will be developed, as well as the hardware for the PILCS module.

D2.1 – Reports on the specifications of the PILCS models and algorithms, Confidential Report

D2.2 – PILCS software, Prototype

D2.3 – PILCS prototypes, Prototype

D2.4 – Report on the lighting hardware specifications and outsourcing, Confidential Report

D2.5 – Report on overall system performance tests, Confidential Report

D2.6 – Report on manufacturing and mass production challenges, Confidential Report


Redesign of luminaire for personalized lighting

The lamps have kindly been provided by our light sponsor Glamox Luxo. The luminaires have been fitted with a prototype reflector. The reflector is basically a mirror and difusor system that transfers the light of the luminaire’s uplighter around the back of the luminaire, to enable us to independently deliver required amounts of light on the desk (downlighter) and at the eye (reflector, see below).

WP3 Test and evaluation – Field test completed – analysis started

WP3 pertains entirely to the empirical field test of the newly developed PILCS software and hardware. Project partners have installed the system and controls in two buildings on the TU/e campus. Twenty seven office employees used the PILCS system for 7 weeks. During these weeks, they received either

  • standard static office lighting on the desk (3 weeks, control condition)
  • personalized dynamic lighting on the desk and at the eye (3 weeks)
  • full user control (tuning of color temperature and intensity) of light on desk and at the eye (1 week).

During the first 6 weeks, these employees participated in an ecological momentary assessment protocol, in which light exposure on their desk and at the eye was recorded continuously, they completed self-reports on visual comfort, vitality, alertness and subjective performance regularly throughout the day, and sleep was recorded via self-report and wrist-worn actigraphy.

Focus groups were held after the last week, during which employees were free to select the light conditions they preferred, continuously throughout the day. All user interventions were logged throughout that week.

Analyses of these data will inform us of:

  • the effectiveness of the personalized, dynamic lighting scenarios in raising alertness, vitality and performance, in comparison to standard office lighting
  • the user experience of personalized, dynamic lighting and the PILCS interface.




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