Method and device for determining reliability of opening and closing spring and circuit system

The invention provides a method and device for determining the reliability of a switching-on and switching-off spring and a circuit system.The method comprises the steps that vibration signals of multiple point positions of the spring are obtained in real time, multiple first functions are determined according to the vibration signals, the first functions are functions that the amplitude of the vibration signals changes along with time, and the point positions are any position of the spring; wavelet transformation is carried out on the waveform corresponding to each first function to obtain a plurality of second functions, and the second functions are functions of which the amplitudes of the filtered vibration signals change along with time; calculating a plurality of output operation work of the spring according to each second function; and according to the output operation work, a preset interval where each output operation work is located is determined, according to the preset interval where each output op