Aluminum alloy casting safety monitoring system

According to the aluminum alloy casting safety monitoring system, the preprocessing circuit is arranged before the temperature sensor, the liquid level sensor and the valve opening degree sensor are connected with the single-chip microcomputer, and the temperature preprocessing circuit and the liquid level preprocessing circuit replace sampling pulse to trigger sampling, so that abnormal signals enter the single-chip microcomputer in a manner of immediately interrupting response, time lag is shortened, and time delay is reduced. The valve position preprocessing circuit adds a position signal of a cooling water pipe electric valve and a change rate signal to the single-chip microcomputer, and before the single-chip microcomputer is connected to the electric valve, a driving compensation circuit is arranged and receives a cooling water valve control signal and a flashboard mechanism motor driving signal output by the single-chip microcomputer. The control pulse generated by the modulation oscillator is output t