Use of lightweight FFT-based algorithms for remote measurements using DIC
Abrupt collapse events that result in casualties due to failure of load-bearing structures have been reported in recent years. Continuous remote monitoring of these structures, assessing the behavior under operational load, could provide a reliable prevention, as the developing damage manifests its...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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CTU Central Library
2023-07-01
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| Series: | Acta Polytechnica CTU Proceedings |
| Subjects: | |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/9227 |
| _version_ | 1797743575770857472 |
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| author | Slávek Zbirovský Václav Nežerka |
| author_facet | Slávek Zbirovský Václav Nežerka |
| author_sort | Slávek Zbirovský |
| collection | DOAJ |
| description |
Abrupt collapse events that result in casualties due to failure of load-bearing structures have been reported in recent years. Continuous remote monitoring of these structures, assessing the behavior under operational load, could provide a reliable prevention, as the developing damage manifests itself through a loss of stiffness, and therefore excessive deflections. Digital image correlation (DIC) algorithms based on fast Fourier transform (FFT) were implemented in a small computer unit Raspberry Pi, capable of remote operation in a low-energy demand mode. The unit is fully autonomous, capable of localizing QR code targets and extracting encoded information. This strategy allows us to instantly evaluate displacements of QR codes attached to any surface and send the data to a server. The software was developed in Python, allowing for two modes: the online mode for current data evaluation with information transfer via the MQTT protocol and the offline mode used for retrospective evaluation.
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| first_indexed | 2024-03-12T14:57:25Z |
| format | Article |
| id | doaj.art-4d2e6d99131043bbb20c05ece32b569e |
| institution | Directory Open Access Journal |
| issn | 2336-5382 |
| language | English |
| last_indexed | 2024-03-12T14:57:25Z |
| publishDate | 2023-07-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj.art-4d2e6d99131043bbb20c05ece32b569e2023-08-14T12:14:25ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822023-07-014010.14311/APP.2023.40.0123Use of lightweight FFT-based algorithms for remote measurements using DICSlávek Zbirovský0Václav Nežerka1Czech Technical University in Prague, Faculty of Civil Engineering, Department of Physics, Thákurova 7, 166 29 Prague 6, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Physics, Thákurova 7, 166 29 Prague 6, Czech Republic Abrupt collapse events that result in casualties due to failure of load-bearing structures have been reported in recent years. Continuous remote monitoring of these structures, assessing the behavior under operational load, could provide a reliable prevention, as the developing damage manifests itself through a loss of stiffness, and therefore excessive deflections. Digital image correlation (DIC) algorithms based on fast Fourier transform (FFT) were implemented in a small computer unit Raspberry Pi, capable of remote operation in a low-energy demand mode. The unit is fully autonomous, capable of localizing QR code targets and extracting encoded information. This strategy allows us to instantly evaluate displacements of QR codes attached to any surface and send the data to a server. The software was developed in Python, allowing for two modes: the online mode for current data evaluation with information transfer via the MQTT protocol and the offline mode used for retrospective evaluation. https://ojs.cvut.cz/ojs/index.php/APP/article/view/9227DICFFTRaspberry PiMQTTQR code |
| spellingShingle | Slávek Zbirovský Václav Nežerka Use of lightweight FFT-based algorithms for remote measurements using DIC Acta Polytechnica CTU Proceedings DIC FFT Raspberry Pi MQTT QR code |
| title | Use of lightweight FFT-based algorithms for remote measurements using DIC |
| title_full | Use of lightweight FFT-based algorithms for remote measurements using DIC |
| title_fullStr | Use of lightweight FFT-based algorithms for remote measurements using DIC |
| title_full_unstemmed | Use of lightweight FFT-based algorithms for remote measurements using DIC |
| title_short | Use of lightweight FFT-based algorithms for remote measurements using DIC |
| title_sort | use of lightweight fft based algorithms for remote measurements using dic |
| topic | DIC FFT Raspberry Pi MQTT QR code |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/9227 |
| work_keys_str_mv | AT slavekzbirovsky useoflightweightfftbasedalgorithmsforremotemeasurementsusingdic AT vaclavnezerka useoflightweightfftbasedalgorithmsforremotemeasurementsusingdic |