Daniel A. Winkler

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We propose a system that can accurately determine the occupancy of zones within a building. As an easily deployable sensor system, TOSS provides detailed information about a zone's occupancy to a building's energy management system in order to control the Heating, Ventilation, Air Conditioning, (HVAC) and lighting behavior for specific zones within the(More)
Buildings are often inefficiently conditioned. Rooms that are empty are needlessly conditioned and partially filled rooms are conditioned assuming maximum occupancy. In this demonstration, we describe a system that reduces energy consumption by opportunistically reducing energy consumption based on room usage; we only condition rooms currently occupied and(More)
In this work, we propose that irrigation systems with distributed independent actuation can substantially reduce water consumption in lawn irrigation. To test this theory, we develop a computationally light fluid flow model that allows the optimization of valve scheduling using standard optimization techniques. With these optimized valve schedules, we then(More)
Humans spend 90% of their lives inside buildings, but often the Heating, Ventilation, and Air Conditioning (HVAC) systems of commercial buildings do not properly maintain occupant comfort. Use of feedback through comfort voting applications has been shown to improve the quality of service, but the effects of application feedback and user interface design(More)
Lawns, both public and private, make up the largest irrigated crop in North America by surface area. Although there have been improvements in sprinkler head technology and weather assimilation, state-of-the-art irrigation systems do nothing to adjust for heterogeneous terrain or varying lawn environments. In this work, a computationally lightweight soil(More)
Lawns make up the largest irrigated crop by surface area in North America, and carries with it a demand for over 9 billion gallons of freshwater each day. Despite recent developments in irrigation control and sprinkler technology, state-of-the-art irrigation systems do nothing to compensate for areas of turf with heterogeneous water needs. In this work, we(More)
We propose a system that can accurately determine the occupancy of zones within a building. As an easily deployable sensor system, TOSS provides detailed information about a zone’s occupancy to a building’s energy management system in order to control the Heating, Ventilation, Air Conditioning, (HVAC) and lighting behavior for specific zones within the(More)
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