Research on data processing in vibration measurement

As the research background of silkworm cocoon nondestructive examination method based on the vibration, signal components of the measured vibration acceleration are analized, then , the way of removing trend component is put forward here. After the trend component being deleted, the data of original signal is disposed to remove the high frequency interference component by three methods singly, which are subsection fitting , data filtering and noise eliminating by wavelet packet. Characteristic number of time domain is abstracted from the dispose result of three way. It shows that, the characteristic number from wavelet is more close to the actual data than the other two ways and is of better effect on noise eliminating in time domain and frequency domain.