Method for predicting service life of electric leakage signal conditioning circuit

The invention discloses a method for predicting the service life of an electric leakage signal conditioning circuit, and the method comprises the steps: taking the electric leakage signal conditioning circuit as a research object, obtaining a key component influencing the overall output performance of the circuit through sensitivity analysis, analyzing the influence of the tolerance of the component on the performance of the electric leakage signal conditioning circuit through a Monte-Carlo method, and carrying out the prediction of the service life of the electric leakage signal conditioning circuit; a conclusion that the smaller the component tolerance is, the higher the precision is and the higher the circuit operation reliability is obtained; and secondly, establishing a performance degradation model of the electric leakage signal conditioning circuit based on a Wiener process, and extrapolating the predicted life under accelerated stress to the predicted life under normal stress by using an Arrhenius equ