Next Article in Journal
Probing the Cyanobacterial Microcystis Gas Vesicles after Static Pressure Treatment: A Potential In Situ Rapid Method
Next Article in Special Issue
Trajectory Identification for Moving Loads by Multicriterial Optimization
Previous Article in Journal
FEM Modeling of the Temperature Influence on the Performance of SAW Sensors Operating at GigaHertz Frequency Range and at High Temperature Up to 500 °C
Previous Article in Special Issue
Vibration-Response-Only Structural Health Monitoring for Offshore Wind Turbine Jacket Foundations via Convolutional Neural Networks
Article

Development of Synchronized High-Sensitivity Wireless Accelerometer for Structural Health Monitoring

1
Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
2
Epson America Inc., San Jose, CA 95112, USA
3
Department of Computer Science, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
4
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA
5
Anne M. and Nathan M. Endowed Chair in Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(15), 4169; https://doi.org/10.3390/s20154169
Received: 30 June 2020 / Revised: 25 July 2020 / Accepted: 25 July 2020 / Published: 27 July 2020
The use of digital accelerometers featuring high sensitivity and low noise levels in wireless smart sensors (WSSs) is becoming increasingly common for structural health monitoring (SHM) applications. Improvements in the design of Micro Electro-Mechanical System (MEMS) based digital accelerometers allow for high resolution sensing required for SHM with low power consumption suitable for WSSs. However, new approaches are needed to synchronize data from these sensors. Data synchronization is essential in wireless smart sensor networks (WSSNs) for accurate condition assessment of structures and reduced false-positive indications of damage. Efforts to achieve synchronized data sampling from multiple WSS nodes with digital accelerometers have been lacking, primarily because these sensors feature an internal Analog to Digital Converter (ADC) to which the host platform has no direct access. The result is increased uncertainty in the ADC startup time and thus worse synchronization among sensors. In this study, a high-sensitivity digital accelerometer is integrated with a next-generation WSS platform, the Xnode. An adaptive iterative algorithm is used to characterize these delays without the need for a dedicated evaluation setup and hardware-level access to the ADC. Extensive tests are conducted to evaluate the performance of the accelerometer experimentally. Overall time-synchronization achieved is under 15 µs, demonstrating the efficacy of this approach for synchronization of critical SHM applications. View Full-Text
Keywords: synchronized sensing; high-sensitivity accelerometer; wireless smart sensor; digital output sensor; structural health monitoring; time synchronization synchronized sensing; high-sensitivity accelerometer; wireless smart sensor; digital output sensor; structural health monitoring; time synchronization
Show Figures

Figure 1

MDPI and ACS Style

Veluthedath Shajihan, S.A.; Chow, R.; Mechitov, K.; Fu, Y.; Hoang, T.; Spencer, B.F., Jr. Development of Synchronized High-Sensitivity Wireless Accelerometer for Structural Health Monitoring. Sensors 2020, 20, 4169. https://doi.org/10.3390/s20154169

AMA Style

Veluthedath Shajihan SA, Chow R, Mechitov K, Fu Y, Hoang T, Spencer BF Jr.. Development of Synchronized High-Sensitivity Wireless Accelerometer for Structural Health Monitoring. Sensors. 2020; 20(15):4169. https://doi.org/10.3390/s20154169

Chicago/Turabian Style

Veluthedath Shajihan, Shaik A., Raymond Chow, Kirill Mechitov, Yuguang Fu, Tu Hoang, and Billie F. Spencer Jr. 2020. "Development of Synchronized High-Sensitivity Wireless Accelerometer for Structural Health Monitoring" Sensors 20, no. 15: 4169. https://doi.org/10.3390/s20154169

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop