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  本文選題：結構健康監(jiān)測 + 無線傳感器網絡�。� 參考：《哈爾濱工業(yè)大學》2014年碩士論文

【摘要】：隨著無線通信技術、傳感技術和微機電系統(tǒng)技術的發(fā)展，無線傳感器網絡被引入到結構健康監(jiān)測中，因其能夠克服有線傳感器網絡布線量大、成本高等不足而得到快速發(fā)展�？v觀無線傳感器節(jié)點及網絡系統(tǒng)在結構健康監(jiān)測領域的研究現狀，硬件和軟件都不斷推陳出新，本文選用了先進的微電子元件，集成開發(fā)了一種新型的無線傳感器網絡節(jié)點，，基于AVR Studio軟件平臺進行了程序開發(fā)，組建成完整的無線傳感器網絡系統(tǒng)，并通過結構動力測試對其綜合性能進行了評估，實驗表明本文開發(fā)的無線傳感器網絡在結構健康監(jiān)測上具有良好的應用前景。 本文主要研究工作和成果如下： 集成了一種新型的無線傳感器網絡節(jié)點和基站。節(jié)點由微處理器單元、無線通信單元、數據采集單元和能量單元組成，可測量土木工程結構健康監(jiān)測常用物理量加速度和應變，并在電子工程師協(xié)助下完成了外圍電路和擴展接口設計。 對數據采集單元的各傳感器進行了標定和測試。溫度采集模塊進行了溫度對比測試，加速度采集模塊和應變采集模塊分別進行了靜態(tài)標定、靜態(tài)重復性測試和動態(tài)對比測試。通過測試的誤差分析和頻率識別分析，驗證了無線傳感器節(jié)點數據采集的有效性和可靠性。 開發(fā)了完整的無線傳感器網絡程序，建立了由網內節(jié)點和網絡基站組成的無線傳感器網絡。軟件以AVR Studio軟件和BitCloud堆棧為開發(fā)平臺，選定分層網絡拓撲結構和無線傳感器網絡分層協(xié)議，完成了無線傳感器節(jié)點數據采集程序、時間同步程序、基站串口通信程序以及無線網絡通信程序的設計。 將開發(fā)的無線傳感器網絡系統(tǒng)應用于結構振動試驗，根據試驗數據提取結構模態(tài)參數，結果與有限元模型、有線測試系統(tǒng)獲得的參數一致性較好，表明了本系統(tǒng)數據采集的可靠性，同時驗證了無線傳感器網絡通信的穩(wěn)定性，說明了本系統(tǒng)在結構健康監(jiān)測應用上的可行性和有效性。
[Abstract]:With the development of wireless communication technology, sensor technology and MEMS technology, wireless sensor network has been introduced into structural health monitoring, which can overcome the shortcomings of wired sensor network, such as large wiring and high cost.According to the research status of wireless sensor nodes and network systems in the field of structural health monitoring, the hardware and software are constantly emerging. In this paper, advanced microelectronic components are selected and a new wireless sensor network node is integrated and developed.Based on AVR Studio software platform, a complete wireless sensor network system is developed, and its comprehensive performance is evaluated by structural dynamic test.Experiments show that the wireless sensor network developed in this paper has a good application prospect in structural health monitoring.The main work and results of this paper are as follows:A new wireless sensor network node and base station are integrated.The node consists of a microprocessor unit, a wireless communication unit, a data acquisition unit and an energy unit, which can measure the acceleration and strain of common physical quantities used in the health monitoring of civil engineering structures.The peripheral circuit and extended interface are designed with the help of electronic engineer.The sensors of the data acquisition unit are calibrated and tested.The temperature acquisition module carries on the temperature contrast test, the acceleration acquisition module and the strain collection module carry on the static calibration, the static repeatability test and the dynamic contrast test respectively.The validity and reliability of wireless sensor node data acquisition are verified by error analysis and frequency identification analysis.A complete wireless sensor network program is developed and a wireless sensor network composed of nodes and base stations in the network is established.The software takes AVR Studio software and BitCloud stack as the development platform, selects the hierarchical network topology and the wireless sensor network layered protocol, completes the wireless sensor node data acquisition program, the time synchronization program,Base station serial communication program and wireless network communication program design.The developed wireless sensor network system is applied to the structural vibration test. The modal parameters of the structure are extracted from the test data. The results are in good agreement with the finite element model, and the parameters obtained by the wired test system are in good agreement.The reliability of the system is demonstrated, and the stability of wireless sensor network communication is verified. The feasibility and effectiveness of the system in the application of structural health monitoring are illustrated.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP212.9;TN929.5;TU317

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本文編號：1767734