On-orbit microprocessor intelligent fault diagnosis device and method

The invention discloses an intelligent fault diagnosis device and method for an on-orbit microprocessor. The on-orbit intelligent fault diagnosis device comprises an operational amplifier which is used for collecting multi-path power supply current information of a tested microprocessor; the analog switch is used for periodically switching multi-path power supply current information acquired by the operational amplifier; the differential operational amplifier is used for carrying out signal conditioning on the multi-path power supply current information acquired by the operational amplifier; the ADC module is used for converting the multi-path power supply current analog quantity conditioned by the differential operational amplifier into a digital signal to obtain current power consumption information in a digital form; the filtering module is used for carrying out filtering and noise reduction on the obtained current power consumption information in the digital form; and the neural network diagnosis module i