Dissertation > Industrial Technology > Building Science > Building structure > Structure theory to calculate > Structural Testing and Inspection

Research on Structure Status Monitoring Based on Wireless Sensing

Author ChenXuDan
Tutor ShiWeiXing
School Tongji University
Course Structural Engineering
Keywords Wireless sensor Parameter Identification Pulsating test Collection synchronization
Type Master's thesis
Year 2007
Downloads 322
Quotes 7
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Health monitoring of large-scale civil engineering for the assessment of the reliability and safety of the structure , to predict the long-term accumulation or sudden disasters caused structural damage potential accidents of great significance , is increasingly becoming a research focus of the field of civil engineering . Recognition of the state of engineering structures is an important part of the health monitoring system . With the depth of research and engineering applications , wireless sensor become an important research direction to expand the scope of application of the health monitoring system . Firstly, through the practical needs of the Health Monitoring of Civil Engineering , presented the conceptual design of a wireless sensor suitable for full-scale structural fluctuation test to determine the appropriate design specifications , component performance and data transfer . And development of the wireless sensor for the performance test, to compare the performance of the wireless systems and wireline systems . Wireless sensor applications to structural health monitoring , data acquisition system , the most important thing is to solve the synchronization problem of the sensor in the process of data collection . Start from the generation of the delay error analysis of the pros and cons of ambient vibration the trial ( pulsations test ) data processing time domain and frequency domain algorithm , and the frequency domain using MATLAB the peak pickup method (PP) and the time domain eigensystem realization algorithm (ERA) and its associated random decrement technology and NExT technology . By the numerical model and test case to examine the accuracy of different algorithms to identify the structural dynamic parameters and contains delay test data processing , analysis of the possible impact of the delay on the test . Finally, a brief discussion of the direction for further work .

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