Fault detection method and fault detection device for LC resonance circuit

The invention relates to the technical field of circuit detection, and discloses a fault detection method and a fault detection device for an LC resonance circuit, which are used for respectively providing a sweep frequency signal at the input positive end and the output positive end of the LC resonance circuit and acquiring the response of the negative end to obtain two groups of amplitude-frequency and phase-frequency characteristics; and a plurality of fault ranges are obtained according to qualitative features in the amplitude-frequency and phase-frequency features, and a final fault type is obtained according to an intersection of the plurality of fault ranges. According to the fault detection method and the fault detection device for the LC resonant circuit, various faults in the LC resonant circuit can be effectively and accurately positioned through qualitative analysis and reverse excitation analysis based on amplitude-frequency and phase-frequency characteristics, and the fault detection method and