Aiming at problem of how to monitor the fault of aeroengine gas path under the condition where electrostatic signal of charged particles in aeroengine gas path is weak

and harsh working environment of the sensor

a monitoring model which can adapt to high temperature

high noise and is sensitive to charge signal is designed. The LabVIEW software is used to establish the sub VⅠ of the static electricity signal in different operating conditions to acquire and analyze signal. Through simulate and experiment of various working condition of aeroengine

an aeroengine gas path fault analyze system is established. Result show that the model has advantages of high resolution

high signal-to-noise ratio

high stability and can steadily monitor various working condition of aeroengine and provide a reliable basis for fault diagnosis of aero engine gas path.