modelHunt1979Light
Extends from Modelica.Blocks.Icons.DiscreteBlock (Graphical layout of discrete block component icon).
Information
Model predicting the state of the lighting with the minimum illuminance on the working plane and occupancy.
Dynamics
In this model, it was found people tend to switch on the lights-if needed- only at times when entering a space, and they rarely switch off the lights until the space becomes completely empty.
The probability to switch on the lights upon arrival would depend on the minimum illuminance level on their working plane.
References
The model is documented in the paper "Hunt, D.R.G., 1980. Predicting artificial lighting use-a method based upon observed patterns of behaviour. Lighting Research & Technology, 12(1), pp.7-14."
The model parameters are regressed from the field study in 10 offices in Germany from Mar. to Dec. 2000.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | AArriv | -0.0175 | Upon arrival |
| Real | BArriv | -4.0835 | Upon arrival |
| Real | CArriv | 1.0361 | Upon arrival |
| Real | MArriv | 1.8223 | Upon arrival |
| Integer | localSeed | 2001 | Local seed for the random number generator |
| Integer | globalSeed | 30129 | Global seed for the random number generator |
| Modelica.Units.SI.Time | samplePeriod | 120 | Sample period |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | ill | Illuminance on the working planein units of lux | |
| Modelica.Blocks.Interfaces.BooleanInput | occ | Indoor occupancy, true for occupied | |
| Modelica.Blocks.Interfaces.BooleanOutput | on | State of lighting |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | pArriv | Probability of switch on the lighting upon arrival |
Revisions
-
July 26, 2018, by Zhe Wang:
First implementation.