压电式加速度传感器振动信号采集系统

Research on vibration signal acquisition system based on piezoelectric acceleration sensor

针对变压器产生的振动信号的特征,设计了一种基于压电式加速度传感器的变压器振动信号采集系统。以振动控制台为试验对象,利用此系统对控制台输出的振动信号进行采集,并用快速傅里叶变换对采集到的振动信号进行分析。实验结果表明:该系统将压电式加速度传感器输出的电荷信号转换成了标准的电压信号,能够准确、实时地采集振动信号,为变压器故障在线监测奠定了基础。

Design a vibration signal acquisition system of transformer based on piezoelectric acceleration sensor aiming at characteristics of vibration signals generated by transformer. Taking vibration console as test object,acquire vibration signal by this system output by console and use fast Fourier transform（ FFT） to analyze collected vibration signal. Test results shows that the system converts charge signal output by piezoelectric acceleration sensor to standard voltage signal and it can accurately and real-time capture vibration signals,which lay foundation for transformer fault on line monitoring.