Design Of Vibration Monitoring System For High-rise Buildings Based On Spectrum Analysis

At present,the newly built high-rise buildings in China rank first in the world every year.A large number of landmarks,the emergence of comprehensive high-rise buildings,the monitoring of the building’s own state and the prediction of the state of the building is a very necessary topic.According to our own situation,many places are caused by natural factors such as monsoon,typhoon,earthquake and so on.Therefore,the vibration parameters of high-rise buildings are selected as the detection signals,and the vibration data are analyzed to monitor the state of high-rise buildings and send alarm information.This paper mainly studies the long-term low-frequency micro-vibration monitoring of high-rise buildings under the influence of external environment under the rapid development of high-rise buildings.Using PSD displacement sensor to collect vibration signal,the principle of PSD sensor and the algorithm for obtaining vibration signal are discussed.The amplitude of vibration is obtained by the proper algorithm.Then,we preprocess the collected data and eliminate the error of the PSD component acquisition signal by a series of methods to ensure the accuracy of the whole system’s front-end acquisition signal.In order to solve the problem of spectrum leakage in spectrum analysis,the method of full phase FFT in improving spectrum analysis accuracy is studied,and the advantages of full phase FFT and traditional FFT in spectrum analysis are compared.The spectrum correction method based on full phase FFT is chosen to improve the spectrum estimation accuracy,and the algorithm is partially improved and simulated.The simulation results show that the improved spectrum estimation accuracy can be improved.The system software mainly performs the functions of collecting vibration signals,spectrum analysis,and results judgment.For the signals collected by the ADC,the apFFT spectrum analysis is completed using STM32 pairs of signals,and higher accuracy spectral lines are obtained by spectrum correction,and whether the alarm is determined by comparing the normal signal with the signal spectrum map stimulated by the outside.Ensure the safety of high-rise buildings.Figure [39] Table[1] Reference[58]...