• search hit 8 of 10
Back to Result List

Measurement of indoor air temperature distribution using acoustic travel-time tomography: Optimization of transducers location and sound-ray coverage of the room

  • Acoustic travel-time TOMography (ATOM) allows the measurement and reconstruction of air temperature distributions. Due to limiting factors, such as the challenge of travel-time estimation of the early reflections in the room impulse response, which heavily depends on the position of transducers inside the measurement area, ATOM is applied mainly outdoors. To apply ATOM in buildings, this paperAcoustic travel-time TOMography (ATOM) allows the measurement and reconstruction of air temperature distributions. Due to limiting factors, such as the challenge of travel-time estimation of the early reflections in the room impulse response, which heavily depends on the position of transducers inside the measurement area, ATOM is applied mainly outdoors. To apply ATOM in buildings, this paper presents a numerical solution to optimize the positions of transducers. This optimization avoids reflection overlaps, leading to distinguishable travel-times in the impulse response reflectogram. To increase the accuracy of the measured temperature within tomographic voxels, an additional function is employed to the proposed numerical method to minimize the number of sound-path-free voxels, ensuring the best sound-ray coverage of the room. Subsequently, an experimental set-up has been performed to verify the proposed numerical method. The results indicate the positive impact of the optimal positions of transducers on the distribution of ATOM-temperatures.show moreshow less

Download full text files

Export metadata

Metadaten
Document Type:Article
Author:M.Sc. Najmeh Sadat Dokhanchi, Dipl.-Ing. Joerg Arnold, Dr.-Ing. Albert VogelGND, Prof. Dr.-Ing. Conrad VoelkerORCiDGND
DOI (Cite-Link):https://doi.org/10.1016/j.measurement.2020.107934Cite-Link
URN (Cite-Link):https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20220524-46473Cite-Link
URL:https://www.sciencedirect.com/science/article/abs/pii/S0263224120304723?via%3Dihub
Parent Title (German):Measurement
Publisher:Elsevier
Place of publication:Amsterdam
Language:English
Date of Publication (online):2020/05/21
Year of first Publication:2020
Release Date:2022/05/24
Publishing Institution:Bauhaus-Universität Weimar
Institutes and partner institutions:Fakultät Bauingenieurwesen / Professur Bauphysik
Volume:2020
Issue:Volume 164, article 107934
Tag:Akustische Laufzeit-Tomographie
GND Keyword:Bauphysik; Bauklimatik
Dewey Decimal Classification:500 Naturwissenschaften und Mathematik / 530 Physik / 534 Schall und verwandte Schwingungen
BKL-Classification:33 Physik / 33.12 Akustik
Licence (German):License Logo Creative Commons 4.0 - Namensnennung-Nicht kommerziell-Keine Bearbeitung (CC BY-NC-ND 4.0)