Temperature measurement and heating integrated alternating current non-magnetic temperature control method and system

The invention provides a temperature measurement and heating integrated alternating current non-magnetic temperature control method and system, and the method comprises the steps: calibrating a platinum metal electric heating sheet, and obtaining a relation between a resistance value and an environment temperature; directly exciting an unbalanced bridge by using the electric heating signal to obtain a bridge output signal of the unbalanced bridge; the bridge output signal is amplified; calculating the resistance value of the platinum metal electric heating sheet according to the amplified bridge output signal and the heating signal; calculating to obtain the current temperature value of the platinum metal electric heating sheet; a temperature difference value between the expected temperature and the actual temperature; pID control is carried out based on the temperature difference value between the expected temperature and the current temperature so that the temperature difference value can be controlled to b