The invention relates to the technical field of
electronic information, in particular to a
capacitance sensing-based inspection quality reverse calibration method, which comprises the following steps that: a
capacitance sensing circuit inputs excitation
voltage to a calibrated inspection quality simulator, and reads an output
voltage value in the
capacitance sensing circuit to obtain circuit
gain of the capacitance sensing circuit; placing the inspection
mass in the
electrode cage, and enabling the inspection
mass to be located at the center position of the
electrode cage; the capacitance sensing circuit is controlled to input excitation
voltage to the inspection
mass, and the output voltage value of the
electrode cage is read in the capacitance sensing circuit; obtaining the input tolerance of the capacitance sensing circuit according to the circuit
gain and the output voltage value; the posture of the electrode cage is adjusted, so that the relative distance between the electrode cage and the inspection mass is changed, and the calibration relation between the relative distance and the capacitance formed between the inspection mass and the electrode cage is obtained. Through standard transmission, the capacitance sensing circuit is used as a standard to reversely calibrate the inspection quality, the measurement error is reduced, and the operation is simple.