A method for processing signals of a vehicle acoustic emission system includes the acoustic emission system

摘要

The invention relates to an electrical signal processing method for an acoustic emission system, which comprises the following steps: (a) sending (53) calibration signals to an electroacoustic transducer, (b) outputting (54, 70) sounds from the calibration signals through the electroacoustic transducer; (c) Measurement (56,72) load terminal voltage, (d) calculate (60) impedance change of electroacoustic transducer according to frequency change of calibration signal, (E) determine (62) resonant frequency of electroacoustic transducer according to calculated impedance change; (f) According to the determined resonant frequency, (64) sets of acoustic filters are selected from the database,(g) The acoustic filter assembly (68) is applied to the electrical signal to process the electrical signal from the input.Figure published with summary: Figure 3