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The3D Distributed Deformation Monitoring System Design Of Geotechnical

Posted on:2013-10-20Degree:MasterType:Thesis
Country:ChinaCandidate:Q X HouFull Text:PDF
GTID:2252330422975231Subject:Control Engineering
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There are many mountains in our country and dense large civil engineering facilities,each year many of the hillside and geotechnical engineering geotechnical deformation due togeological disasters. Especially in the rainy weather of summer, more susceptible tolandslides, mudslides and mountain collapse causing huge losses to people’s lives andproperty safety. Geotechnical deformation monitoring related to the rapid development of thenational economy, based on the actual project come to the field of geotechnical monitoringexisting geotechnical deformation monitoring technology mainly depend on the crack meter,steel strip, infrared analyzer, GPS positioning and other technical means.The large amount ofinstallation work of these sensing technology, not the overall monitoring of the whole rangeof large slope, the more expensive price of some technology. Therefore, to determine thechoice of large slope comprehensive monitoring of the optical fiber sensor as a dataacquisition end fiber geotechnical slope monitoring network, choose the advancedmicrocontroller as the control core through the formation of the the GPRS communicationsnetwork transmission data. And the use of SVM Support Vector Machines geotechnicaldeformation prediction model and training measurement data to make predictions, scientificforecasting geotechnical deformation caused disasters.The system uses the TI CORTEX-M3core ARM chip LM3S6965controller, control thevarious tasks of the monitoring equipment based on the UC/OS-II real-time operating system.The establishment of SVM support vector machine geotechnical deformation predictionmodel, and the data of mining was used training to make predictions. The main content of thistreatise include:1. Select a construction difficulty, high sensitivity, can achieve the sensorsignal remote monitoring, comprehensive monitoring of slope, especially large-scale slope.The fiber optic sensor meets these characteristics, so the selection of fiber optic sensor as ageotechnical deformation collection tool. Geotechnical deformation monitoring systemhardware circuit design, including a32-channel fiber-optic sensor channel selection circuitsignal acquisition circuit and GPRS wireless communication module circuit; software designof the system, including UC/OS-II real-time operating system on the LM3S6965transplantthe underlying drivers of each module;3. Use statistical learning algorithms, support vectormachines (Support Vector Machine, SVM) geotechnical deformation prediction model, to achieve scientific and effective prediction of geotechnical deformation.Starting from the point of view of the geotechnical deformation monitoring method, tocreate a distributed deformation monitoring system design of geotechnical based on theanalysis of existing monitoring methods, and use the SVM to establish geotechnicaldeformation prediction model. Modules are relatively independent of the whole system work,both to facilitate programming and module debugging convenience for the latter part of theoverall program architecture. Finally, on the subject of the research are summarized prospectsmade to promote the application of the subject, and also need to be further improved. Becausethere is no time to do a lot of data collection, it is need for large amounts of data modeltraining next time.
Keywords/Search Tags:geotechnical deformation monitoring, 32-way fiber optic sensors, CORTEX-M3controller, GPRS communications, SVM support vector machine
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