Method for collecting signals of control guide circuit of alternating current charging equipment

The invention discloses a method for collecting signals of a control guide circuit of alternating current charging equipment. The method comprises the step of sampling and filtering CP signals through a control guide processing module. The process of sampling and filtering the CP signals comprises the following steps: carrying out continuous sampling to obtain a plurality of original CP loop voltage values, namely sampling CP signals to obtain original ADC sampling values and correcting the original ADC sampling values through a scale factor to obtain the original CP loop voltage values; processing the plurality of original CP loop voltage values through a median average digital filtering method to obtain an average CP voltage value; and adjusting the average CP voltage value through an operational amplifier circuit coefficient to obtain an actual CP loop voltage value, wherein the actual CP loop voltage value is equal to a ratio of the average CP voltage value to the operational amplifier circuit coefficient