Low-Cost Thermal Camera-Based Counting Occupancy Meter Facilitating Energy Saving in Smart Buildings

Using passive infrared sensors is a well-established technique of presence monitoring. While it can significantly reduce energy consumption, more savings can be made when utilising more modern sensor solutions coupled with machine learning algorithms. This paper proposes an improved method of presen...

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Main Authors: Marek Kraft, Przemysław Aszkowski, Dominik Pieczyński, Michał Fularz
Format: Article
Language:English
Published: MDPI AG 2021-07-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/15/4542
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author Marek Kraft
Przemysław Aszkowski
Dominik Pieczyński
Michał Fularz
author_facet Marek Kraft
Przemysław Aszkowski
Dominik Pieczyński
Michał Fularz
author_sort Marek Kraft
collection DOAJ
description Using passive infrared sensors is a well-established technique of presence monitoring. While it can significantly reduce energy consumption, more savings can be made when utilising more modern sensor solutions coupled with machine learning algorithms. This paper proposes an improved method of presence monitoring, which can accurately derive the number of people in the area supervised with a low-cost and low-energy thermal imaging sensor. The method utilises U-Net-like convolutional neural network architecture and has a low parameter count, and therefore can be used in embedded scenarios. Instead of providing simple, binary information, it learns to estimate the occupancy density function with the person count and approximate location, allowing the system to become considerably more flexible. The tests show that the method compares favourably to the state of the art solutions, achieving significantly better results.
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spelling doaj.art-91235f16eab84e8d8718c6257bafddf52023-11-22T05:34:33ZengMDPI AGEnergies1996-10732021-07-011415454210.3390/en14154542Low-Cost Thermal Camera-Based Counting Occupancy Meter Facilitating Energy Saving in Smart BuildingsMarek Kraft0Przemysław Aszkowski1Dominik Pieczyński2Michał Fularz3Institute of Robotics and Machine Intelligence, Poznań University of Technology, Piotrowo 3A, 60-965 Poznań, PolandInstitute of Robotics and Machine Intelligence, Poznań University of Technology, Piotrowo 3A, 60-965 Poznań, PolandInstitute of Robotics and Machine Intelligence, Poznań University of Technology, Piotrowo 3A, 60-965 Poznań, PolandInstitute of Robotics and Machine Intelligence, Poznań University of Technology, Piotrowo 3A, 60-965 Poznań, PolandUsing passive infrared sensors is a well-established technique of presence monitoring. While it can significantly reduce energy consumption, more savings can be made when utilising more modern sensor solutions coupled with machine learning algorithms. This paper proposes an improved method of presence monitoring, which can accurately derive the number of people in the area supervised with a low-cost and low-energy thermal imaging sensor. The method utilises U-Net-like convolutional neural network architecture and has a low parameter count, and therefore can be used in embedded scenarios. Instead of providing simple, binary information, it learns to estimate the occupancy density function with the person count and approximate location, allowing the system to become considerably more flexible. The tests show that the method compares favourably to the state of the art solutions, achieving significantly better results.https://www.mdpi.com/1996-1073/14/15/4542heatingair conditioningdeep learningbuilding management systemsthermal imaging
spellingShingle Marek Kraft
Przemysław Aszkowski
Dominik Pieczyński
Michał Fularz
Low-Cost Thermal Camera-Based Counting Occupancy Meter Facilitating Energy Saving in Smart Buildings
Energies
heating
air conditioning
deep learning
building management systems
thermal imaging
title Low-Cost Thermal Camera-Based Counting Occupancy Meter Facilitating Energy Saving in Smart Buildings
title_full Low-Cost Thermal Camera-Based Counting Occupancy Meter Facilitating Energy Saving in Smart Buildings
title_fullStr Low-Cost Thermal Camera-Based Counting Occupancy Meter Facilitating Energy Saving in Smart Buildings
title_full_unstemmed Low-Cost Thermal Camera-Based Counting Occupancy Meter Facilitating Energy Saving in Smart Buildings
title_short Low-Cost Thermal Camera-Based Counting Occupancy Meter Facilitating Energy Saving in Smart Buildings
title_sort low cost thermal camera based counting occupancy meter facilitating energy saving in smart buildings
topic heating
air conditioning
deep learning
building management systems
thermal imaging
url https://www.mdpi.com/1996-1073/14/15/4542
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AT dominikpieczynski lowcostthermalcamerabasedcountingoccupancymeterfacilitatingenergysavinginsmartbuildings
AT michałfularz lowcostthermalcamerabasedcountingoccupancymeterfacilitatingenergysavinginsmartbuildings