gains and internal gains from appliances,heat gains from occupants are an importantsource contributing to space heating indomestic buildings. It is necessary toconsciously consider all of these heat gainswhen aiming at accurately estimating theheat loss coefficient (HLC) of a building.Whilst sensor technology and algorithms areavailable to quantify the contribution of theheating system, solar gains and electricalappliances, the accurate estimation of thesensible heat gain from occupants ischallenging due to its stochastic character.
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Abstract geschreven door R.J. Dijkink (Saxion), J.C. Lötters (Universiteit van Twente & Bronkhorst High-Tech BV), B.I. van den Berg (Medical Spectrum Twente) en C.A.J. Damen (Saxion). Initial investigations into the use of a MEMS based multi-parameter sensor for the characterization of medicine mixtures are presented. The current results show good results for density and mediocre results for heat capacity. Viscosity measurements have not yet produced any usable results. However there are clear flaws in the setup which could be the cause of this and which will no
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To better control the growing process of horticulture plants greenhouse growers need an automated way to efficiently and effectively find where diseases are spreading.The HiPerGreen project has done research in using an autonomous quadcopter for this scouting. In order for the quadcopter to be able to scout autonomously accurate location data is needed. Several different methods of obtaining location data have been investigated in prior research. In this research a relative sensor based on optical flow is looked into as a method of stabilizing an absolute measurement based on trilateration. For the optical flow sensor a novel block matching algorithm was developed. Simulated testing showed that Kalman Filter based sensor fusion of both measurements worked to reduce the standard deviation of the absolute measurement from 30 cm to less than 1 cm, while drift due to dead-reckoning was reduced to a maximum of 11 cm from over 36 cm.
