Development Of Vibration Platform Performance Detector Based On Acceleration Sensor Array

As a device capable of producing vibration,the stability and reliability of the shaking table directly affected the accuracy of the test under different vibration environments.Therefore,it was necessary to determine the vibration parameters to determine whether the vibration was accurate.In order to better analyze the vibration of the shaking table,it was necessary to design a multi-channel vibration detection system.This paper took STM32F407 as the core board of the system,selected piezoelectric acceleration sensor array as signal conversion,designed sensor drive circuit,signal conditioning circuit,data acquisition circuit and other signal processing,wrote Fourier algorithm to realize the conversion from voltage signal in time domain to frequency signal in frequency domain,and finally a vibration platform performance detector was designed.Not only can the detector detect the vibration state of the shaking table comprehensively and systematically,it also can display the parameters,such as the acceleration value and frequency in different positions of shaking table.In addition,the detector has the function of overload alarm.After tested,the vibration detector can simultaneously collect multi-channel data and complete four-channel vibration signal detection.The detected acceleration range was 0?20 g,the detected vibration frequency range was 5 Hz?10 k Hz,and the system power consumption was less than 10 W.The whole measuring device can display the vibration parameters accurately.It can be widely used in the low-frequency vibration measurement of the shaking table.