Signal acquisition system of ozone gas sensor

The invention discloses a signal acquisition system of an ozone gas sensor. The system comprises an ozone gas sensor, a signal converter and a central controller, the signal converter is used for receiving the output signal output by the ozone gas sensor, performing analog-to-digital conversion on the output signal to obtain a signal to be processed, and sending the signal to be processed to the central controller; the central controller is used for continuously receiving to-be-processed signals; judging whether the signal voltage difference between the two to-be-processed signals received every preset time period is greater than or equal to a preset voltage threshold value or not; and according to a judgment result, selecting different adaptive coefficients to calculate a Kalman gain so as to process the to-be-processed signal through a Kalman filtering algorithm, so that the signal acquisition system enters a filtering mode or a signal tracking mode, and an ozone concentration signal is obtained through cal