Modeling and Analysis of Dispersive Propagation of Structural Waves for Vibro-Localization
The dispersion of structural waves, where wave speed varies with frequency, introduces significant challenges in accurately localizing occupants in a building based on vibrations caused by their movements. This study presents a novel multi-sensor vibro-localization technique that accounts for disper...
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MDPI AG
2024-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/23/7744 |
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| author | Murat Ambarkutuk Paul E. Plassmann |
| author_facet | Murat Ambarkutuk Paul E. Plassmann |
| author_sort | Murat Ambarkutuk |
| collection | DOAJ |
| description | The dispersion of structural waves, where wave speed varies with frequency, introduces significant challenges in accurately localizing occupants in a building based on vibrations caused by their movements. This study presents a novel multi-sensor vibro-localization technique that accounts for dispersion effects, enhancing the accuracy and robustness of occupant localization. The proposed method utilizes a model-based approach to parameterize key propagation phenomena, including wave dispersion and attenuation, which are fitted to observed waveforms. The localization is achieved by maximizing the joint likelihood of the occupant’s location based on sensor measurements. The effectiveness of the proposed technique is validated using two experimental datasets: one from a controlled environment involving an aluminum plate and the other from a building-scale experiment conducted at Goodwin Hall, Virginia Tech. Results for the proposed algorithm demonstrates a significant improvement in localization accuracy compared to benchmark algorithms. Specifically, in the aluminum plate experiments, the proposed technique reduced the average localization precision from 7.77 cm to 1.97 cm, representing a ∼74% improvement. Similarly, in the Goodwin Hall experiments, the average localization error decreased from 0.67 m to 0.3 m, with a ∼55% enhancement in accuracy. These findings indicate that the proposed approach outperforms existing methods in accurately determining occupant locations, even in the presence of dispersive wave propagation. |
| format | Article |
| id | doaj-art-25fe388ccb42432a97634d9b3aac99ed |
| institution | DOAJ |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-25fe388ccb42432a97634d9b3aac99ed2025-08-20T02:50:37ZengMDPI AGSensors1424-82202024-12-012423774410.3390/s24237744Modeling and Analysis of Dispersive Propagation of Structural Waves for Vibro-LocalizationMurat Ambarkutuk0Paul E. Plassmann1The Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24061, USAThe Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24061, USAThe dispersion of structural waves, where wave speed varies with frequency, introduces significant challenges in accurately localizing occupants in a building based on vibrations caused by their movements. This study presents a novel multi-sensor vibro-localization technique that accounts for dispersion effects, enhancing the accuracy and robustness of occupant localization. The proposed method utilizes a model-based approach to parameterize key propagation phenomena, including wave dispersion and attenuation, which are fitted to observed waveforms. The localization is achieved by maximizing the joint likelihood of the occupant’s location based on sensor measurements. The effectiveness of the proposed technique is validated using two experimental datasets: one from a controlled environment involving an aluminum plate and the other from a building-scale experiment conducted at Goodwin Hall, Virginia Tech. Results for the proposed algorithm demonstrates a significant improvement in localization accuracy compared to benchmark algorithms. Specifically, in the aluminum plate experiments, the proposed technique reduced the average localization precision from 7.77 cm to 1.97 cm, representing a ∼74% improvement. Similarly, in the Goodwin Hall experiments, the average localization error decreased from 0.67 m to 0.3 m, with a ∼55% enhancement in accuracy. These findings indicate that the proposed approach outperforms existing methods in accurately determining occupant locations, even in the presence of dispersive wave propagation.https://www.mdpi.com/1424-8220/24/23/7744occupant localizationsensor fusionstructural vibrationwave propagationdispersion |
| spellingShingle | Murat Ambarkutuk Paul E. Plassmann Modeling and Analysis of Dispersive Propagation of Structural Waves for Vibro-Localization Sensors occupant localization sensor fusion structural vibration wave propagation dispersion |
| title | Modeling and Analysis of Dispersive Propagation of Structural Waves for Vibro-Localization |
| title_full | Modeling and Analysis of Dispersive Propagation of Structural Waves for Vibro-Localization |
| title_fullStr | Modeling and Analysis of Dispersive Propagation of Structural Waves for Vibro-Localization |
| title_full_unstemmed | Modeling and Analysis of Dispersive Propagation of Structural Waves for Vibro-Localization |
| title_short | Modeling and Analysis of Dispersive Propagation of Structural Waves for Vibro-Localization |
| title_sort | modeling and analysis of dispersive propagation of structural waves for vibro localization |
| topic | occupant localization sensor fusion structural vibration wave propagation dispersion |
| url | https://www.mdpi.com/1424-8220/24/23/7744 |
| work_keys_str_mv | AT muratambarkutuk modelingandanalysisofdispersivepropagationofstructuralwavesforvibrolocalization AT pauleplassmann modelingandanalysisofdispersivepropagationofstructuralwavesforvibrolocalization |