Quartz flexible accelerometer I/F acquisition circuit

The invention provides a quartz flexible accelerometer I/F acquisition circuit. An integrating circuit is used for integrating analog current from an accelerometer; the integrating circuit comprises an operational amplifier and a capacitor; the integrating circuit inputs the output current of the accelerometer to the inverted input end of the operational amplifier, and the sigma point of the inverted input end can also receive feedback current from a constant current source; the comparison circuit is used for judging whether the integral voltage value of the integral circuit exceeds a set threshold; the logic trigger circuit is used for triggering a control signal when the integral voltage value exceeds a set threshold; the switching circuit is controlled by the logic trigger circuit to be switched on or off and is used for switching the access direction of the constant current source; the constant current source is used for injecting feedback current to the inverted input end when the switching circuit is sw