The invention relates to the field of
defrosting and demisting of a glass product, especially relates to a temperature measuring technology of
electric heating glass, and specifically provides a temperature measuring
system and method of
electric heating glass by use of a resistance
temperature coefficient. The temperature measuring
system of the
electric heating glass comprises a glass plate, an electric
heating element and a power source, and further comprises a current measuring device or a resistance measuring device, wherein the current measuring device or the resistance measuring device can measure current I or resistance R of the electric
heating element after energization, and the surface temperature of the glass plate provided with the electric
heating element is equal to the temperature T of the electric heating element. According to the invention, arrangement of multiple temperature sensors on the surface of the glass can be prevented, and the cost is decreased; the measured temperature is the overall
equivalent temperature of the glass, and the overall temperature distribution of the glass can be effectively reflected; the glass appearance and the
sight of a person in a vehicle or an indoor person are not affected, when the
system and method are applied to an automobile front
windshield, no interference is caused to the
sight of a driver, and the automobile
driving safety is improved.