A New Control Framework For The Visual Environment Based On Low-Cost HDR Luminance Acquisition

Conference Year

July 2018

Authors

Michael Kim, Lyles School of Civil Engineering, Purdue University; Center for High Performance Buildings, Ray W. Herrick Laboratories, Purdue UniversityFollow
Iason Konstantzos, Lyles School of Civil Engineering, Purdue University; Center for High Performance Buildings, Ray W. Herrick Laboratories, Purdue UniversityFollow
Athanasios Tzempelikos, Lyles School of Civil Engineering, Purdue University; Center for High Performance Buildings, Ray W. Herrick Laboratories, Purdue UniversityFollow

Keywords

Daylighting, glare, visual comfort, shading controls, HDR

Abstract

This study introduces a new control framework, based on a low-cost programmable luminance acquisition (HDR) sensor placed on the interior surface of the window. The new sensor, photometrically and geometrically calibrated, can capture luminance and geometry details of potential glare sources within its entire visual span in real time, while also providing feedback about transmitted illuminance. Real-time processing of the sensor data enables an alternate, low-cost glare sensing system that can be directly used in daylighting controls and building automation systems. This novel framework is the first proposed solution to address direct and reflective glare in a straightforward and efficient way and therefore it is a significant step towards improving the visual environment in perimeter building zones.