In the experiments,the pressure-difference fluctuation signals of gas-solid two-phase flow were collected,the data-processing flat of wavelet analysis was designed based on LabVIEW.Pressure-difference fluctuation signals were denoised and the characters of wavelet energy were extracted.According to wavelet energy,the relationship among physical properties and filling amount of particles and the characters of particle flows was discussed.Through comparing the wavelet energy method with the static pressure di...