Temperature measurement system and method for electrically heated glass

Abstract

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.

Description

Technical field: [0001] The invention relates to the field of defrosting and defogging of glass products, in particular to the temperature measurement technology of electrically heated glass, and specifically provides a system and method for measuring the temperature of electrically heated glass by using the temperature coefficient of resistance, and also provides a method capable of An auto glass system for automatic defrosting and defogging, and a defogging and defrosting method. Background technique: [0002] In cold weather, frosting tends to occur on automobile glass and building glass; or when the humidity inside and outside the car is high, and the temperature and the external environment are greatly different, fogging is also prone to occur on automobile glass and building glass; Thereby affecting the observation line of sight inside and outside the car and their appearance, especially the front windshield glass of the car that provides a good view for the driver. If...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an electric heating system for the disadvantages of the existing technology that significantly affect the appearance and optical performance of the car or cannot truly and accurately reflect the temperature of the main viewing area of ​​the glass when measuring the temperature of the electrically heated glass. The temperature measurement system and method of glass also provide an automobile glass system capable of automatic defrosting and defogging, as well as defogging and defrosting methods

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