Antifogging method for automobile windshield

Abstract

The invention relates to an antifogging method for an automobile windshield, which includes: using a front windshield sensor (4) to collect temperature of the windshield, calculating temperature in a carriage by a formula according to relative humidity and temperature data of a same point in the carriage, and comparing the interior temperature of the automobile with the temperature of the windshield to judge whether the windshield is fogged or not. Td refers to the interior temperature of the automobile, Tws refers to the temperature of the windshield, delta refers to safety factor, and Td+delta=>Tws refers that the windshield is possibly fogged and a defogging controller starts to defog. The antifogging method for the automobile windshield has the advantages that the antifogging method is automatic, intelligent, safe, efficient, energy-saving and low-carbon.

Description

technical field [0001] The invention belongs to the technical field of anti-fog devices for automobiles, and more specifically relates to an anti-fog method for automobile windshields. Background technique [0002] With the rapid development of our country's economy in the past few years, a car is no longer an unattainable thing for our common people. According to statistics, in 2008, the sales volume of my country's automobiles has exceeded 8.7 million. However, while the rapid development of my country's automobile industry has brought convenience and joy to people, hidden dangers have also followed. In 2007, a total of 327,209 road traffic accidents occurred in my country, resulting in 81,619 deaths, 380,442 injuries, and a direct property loss of 1.2 billion yuan. The incidence of such road accidents far exceeds the average level of western developed countries. In the causes of accidents, a considerable part of the accidents occurred because in winter or when it rained, ...

AI Technical Summary

Problems solved by technology

In 2007, a total of 327,209 road traffic accidents occurred in my country, resulting in 81,619 deaths, 380,442 injuries, and a direct property loss of 1.2 billion yuan. The incidence of such road accidents far exceeds the average level of western developed countries. Among the causes of accidents, a considerable part of the accidents occurred because in winter or rainy days, the driver's vision was blurred due to the fog on the windshield, which caused road accidents.

[0003] Nowadays, there are many models of cars equipped with a "defogging gear" button. For customers, it seems to be a very simple matter to directly use this defogging gear to defog, but in fact many drivers do not It is not clear when the car fogs up and needs to be removed, and when it is not necessary to remove the fog and the button of the defogger can be turned off. Often customers will start the defogging function at an inappropriate time, and then turn off the defogging function. Or when the car does not need defogging, the drivers continue to activate the defogging function and run the car's HVAC system for defogging, which greatly wastes energy consumption. At this time, an intelligent automatic defogging device is needed. method to help everyone determine the necessity and time of defogging. The automatic defogging method not only guarantees the lives of people in the compartment, but also saves the energy consumption of the car and plays an indelible role in saving fuel consumption.

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