Dynamic delay compensating device for solenoid valve of external counter-pulsation system

The utility model discloses a dynamic delay compensating device for a solenoid valve of an external counter-pulsation system and belongs to the dynamic delay compensating device for the solenoid valve. The device comprises a pressure sensor, a controller, an optoelectronic isolator and a driving circuit, wherein the pressure sensor is used for detecting the pressure of a charging port of an air bag; the controller is used for judging if a pressure signal is more than a threshold value; when the pressure signal is more than the threshold value, delay time is recalculated; and when the calculated delay time is changed, the delay time is updated. By adopting the dynamic delay compensating device provided by the utility model, the dynamic compensation for the delay time of the solenoid valve is realized, the charging time is more accurate, the treating effect of the external counter-pulsation system is better and the safety is higher.