An Approach for Time Synchronization of Wireless Accelerometer Sensors Using Frequency-Squeezing-Based Operational Modal Analysis
Wireless sensor networks usually suffer from the issue of time synchronization discrepancy due to environmental effects or clock management collapse. This will result in time delays between the dynamic responses collected by wireless sensors. If non-synchronized dynamic response data are directly us...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-06-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/13/4784 |
| _version_ | 1797408182254960640 |
|---|---|
| author | Yi Chen Xiaoqing Zheng Yaozhi Luo Yanbin Shen Yu Xue Wenwei Fu |
| author_facet | Yi Chen Xiaoqing Zheng Yaozhi Luo Yanbin Shen Yu Xue Wenwei Fu |
| author_sort | Yi Chen |
| collection | DOAJ |
| description | Wireless sensor networks usually suffer from the issue of time synchronization discrepancy due to environmental effects or clock management collapse. This will result in time delays between the dynamic responses collected by wireless sensors. If non-synchronized dynamic response data are directly used for structural modal identification, it leads to the misestimation of modal parameters. To overcome the non-synchronization issue, this study proposes a time synchronization approach to detect and correct asynchronous dynamic responses based on frequency domain decomposition (FDD) with frequency-squeezing processing (FSP). By imposing the expected relationship between modal phase angles extracted from the first-order singular value spectrum, the time lags between different sensors can be estimated, and synchronization can be achieved. The effectiveness of the proposed approach is fully demonstrated by numerical and experimental studies, as well as field measurement of a large-span spatial structure. The results verify that the proposed approach is effective for the time synchronization of wireless accelerometer sensors. |
| first_indexed | 2024-03-09T03:55:41Z |
| format | Article |
| id | doaj.art-895d8da1617c42d5a0a2350486f82649 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T03:55:41Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-895d8da1617c42d5a0a2350486f826492023-12-03T14:22:08ZengMDPI AGSensors1424-82202022-06-012213478410.3390/s22134784An Approach for Time Synchronization of Wireless Accelerometer Sensors Using Frequency-Squeezing-Based Operational Modal AnalysisYi Chen0Xiaoqing Zheng1Yaozhi Luo2Yanbin Shen3Yu Xue4Wenwei Fu5College of Civil and Architecture Engineering, Zhejiang University, Hangzhou 310058, ChinaCenter for Balance Architecture, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil and Architecture Engineering, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil and Architecture Engineering, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil and Architecture Engineering, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil and Architecture Engineering, Zhejiang University, Hangzhou 310058, ChinaWireless sensor networks usually suffer from the issue of time synchronization discrepancy due to environmental effects or clock management collapse. This will result in time delays between the dynamic responses collected by wireless sensors. If non-synchronized dynamic response data are directly used for structural modal identification, it leads to the misestimation of modal parameters. To overcome the non-synchronization issue, this study proposes a time synchronization approach to detect and correct asynchronous dynamic responses based on frequency domain decomposition (FDD) with frequency-squeezing processing (FSP). By imposing the expected relationship between modal phase angles extracted from the first-order singular value spectrum, the time lags between different sensors can be estimated, and synchronization can be achieved. The effectiveness of the proposed approach is fully demonstrated by numerical and experimental studies, as well as field measurement of a large-span spatial structure. The results verify that the proposed approach is effective for the time synchronization of wireless accelerometer sensors.https://www.mdpi.com/1424-8220/22/13/4784time synchronizationwireless sensoroperational modal analysisfrequency-squeezingstructural health monitoring |
| spellingShingle | Yi Chen Xiaoqing Zheng Yaozhi Luo Yanbin Shen Yu Xue Wenwei Fu An Approach for Time Synchronization of Wireless Accelerometer Sensors Using Frequency-Squeezing-Based Operational Modal Analysis Sensors time synchronization wireless sensor operational modal analysis frequency-squeezing structural health monitoring |
| title | An Approach for Time Synchronization of Wireless Accelerometer Sensors Using Frequency-Squeezing-Based Operational Modal Analysis |
| title_full | An Approach for Time Synchronization of Wireless Accelerometer Sensors Using Frequency-Squeezing-Based Operational Modal Analysis |
| title_fullStr | An Approach for Time Synchronization of Wireless Accelerometer Sensors Using Frequency-Squeezing-Based Operational Modal Analysis |
| title_full_unstemmed | An Approach for Time Synchronization of Wireless Accelerometer Sensors Using Frequency-Squeezing-Based Operational Modal Analysis |
| title_short | An Approach for Time Synchronization of Wireless Accelerometer Sensors Using Frequency-Squeezing-Based Operational Modal Analysis |
| title_sort | approach for time synchronization of wireless accelerometer sensors using frequency squeezing based operational modal analysis |
| topic | time synchronization wireless sensor operational modal analysis frequency-squeezing structural health monitoring |
| url | https://www.mdpi.com/1424-8220/22/13/4784 |
| work_keys_str_mv | AT yichen anapproachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT xiaoqingzheng anapproachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT yaozhiluo anapproachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT yanbinshen anapproachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT yuxue anapproachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT wenweifu anapproachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT yichen approachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT xiaoqingzheng approachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT yaozhiluo approachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT yanbinshen approachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT yuxue approachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis AT wenweifu approachfortimesynchronizationofwirelessaccelerometersensorsusingfrequencysqueezingbasedoperationalmodalanalysis |