Research And Design On WSNs For Structural Health Monitoring Of Super Tall Buildings

With the development of China’s economy and construction technology in recent years,the number of super high-rise buildings has been increasing.The increase of using time and changes in the surrounding environment will cause local or overall structural safety problems in super high-rise buildings,which in turn will pose a threat to personal and property safety.In order to achieve protection and early warning,it is necessary to obtain relevant information on the health status of building structures in a timely manner.The traditional manual detection method has the problem of time and effort,and it is difficult to achieve periodic and real-time monitoring.Therefore based on the use of wireless sensor network technology,an intelligent monitoring system is designed that can be used to obtain structural health information of super high-rise buildings through the research of wireless sensor network routing protocol and wireless sensor nodes in this thesis.The main work and results of this thesis are as follows:(1)Aiming at the energy consumption problem of wireless sensor network system,an optimized routing algorithm are given from the perspective of network energy saving on the basis of analyzing the factors affecting energy consumption.The optimization algorithm uses the LEACH algorithm to elect the cluster head in the network clustering stage,and uses the Dijkstra algorithm to select multiple candidate paths in the data transmission stage,and then comprehensively considers the remaining energy and path of each node on the candidate path through the defined path cost function The average remaining energy and the number of nodes select the optimal transmission path,thereby increasing the network duration.The simulation results show that,compared with the LEACH algorithm and the planar algorithm,the optimization algorithm can extend the working time of network nodes,reduce network energy consumption and increase network life.(2)In view of the role of wireless sensor nodes in WSNs system,the factors of sensor nodes such as miniaturization,low power consumption,high reliability and so on are taken into consideration in this thesis,in which the module hardware structures of sensor elements,microprocessing,external clock,wireless transceiver and power management of inclination,temperature and humidity,acceleration and strain sensor nodes are studied,and the software part of the nodes is designed.(3)An experimental study is made on the super high-rise building structure monitoring system.The designed wireless sensor nodes are calibrated,tested and arranged on the building under test.Real-time display,storage and query of the monitoring data are realized by transmitting the collected monitoring data to the host computer,and the monitoring data is analyzed.