Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Using HDR Sky Luminance Maps to Improve Accuracy of Virtual Work Plane Illuminance Sensors

Christian Humann, Andrew McNeil
Terrestrial Light, Berkeley, California, USA

Abstract: Virtual sensors use simulation to predict conditions at predetermined locations. Such sensors can potentially replace physical sensors for controlling automated building systems, saving cost, labor, and permitting sensor locations that would not be feasible for physical devices. This study tests the accuracy of virtual work plane illuminance sensors against real world measurements in a physical, scale model illuminated under varying sky conditions. We consider three methods for modelling exterior daylight conditions as follows: 1. The Perez All-weather sky. 2. A horizontal HDR sky image. 3. A vertically oriented hemispherical HDR image of the exterior environment.
Pages: 1447 - 1455