Windshield Heating Control System for Temperature Gradient Management
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Solution Overview
Problem
The existing windshield heating systems can create temperature differences between regions with and without heating elements, leading to potential defects in the glass, such as cracks, due to uneven heating.
Innovation Solution
A heating control system that includes sensors and a control processing unit to manage temperature differences by adjusting the heating elements in the first and second regions, ensuring the temperature in the intermediate region does not exceed a certain threshold, thereby reducing the risk of glass defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If heating elements are disposed in separate regions of glass, then heating coverage is improved, but temperature difference between regions increases causing glass defects
Solution Approach 1:
The heating system is divided into multiple independent heating regions (first heating region, second heating region, third heating region) with separate heating elements. Each region can be controlled independently to achieve uniform heating across the entire glass surface while preventing excessive temperature differences that would cause defects
Solution Approach 2:
Different heating control strategies are applied to different regions based on their specific characteristics. The intermediate region (third heating region) receives controlled heating to prevent it from becoming too cold relative to the main heating regions, thereby maintaining overall temperature uniformity and preventing glass defects
2Ease of manufacture
If heating elements are disposed in two separate regions, then manufacturing complexity is reduced, but temperature uniformity deteriorates causing defects in intermediate region
Solution Approach 1:
The heating system is segmented into three distinct heating regions with separate heating elements, allowing for simpler manufacturing of each individual region while maintaining overall temperature uniformity through independent control of each segment
Solution Approach 2:
The third heating region (intermediate region) acts as a thermal bridge between the first and second heating regions. By providing controlled heating in this intermediate area, temperature uniformity is maintained across the entire glass surface, preventing defects while keeping the overall system structure relatively simple
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces the likelihood of glass defects by maintaining a controlled temperature gradient between the heated regions and the intermediate area, preventing excessive temperature differences that could cause cracking.
Implementation Method 1
a first heating element provided in a first region of the glass and a second heating element provided in a second region different from the first region of the glass
Implementation Method 2
a temperature difference between a glass temperature of a third region positioned between a first region and a second region of the glass and a glass temperature of the first region or a glass temperature of the second region
Data Source
AI summary
A heating control system for controlling a heating element provided on glass including a sensor information acquisition unit configured to acquire sensor information from one or more sensors, and a control processing unit configured to control a first heating element provided in a first region of the glass and a second heating element provided in a second region of the glass based on the sensor information. The control processing unit comprises a temperature difference reduction processing unit configured to execute temperature difference reduction processing for controlling at least one of the first heating element and the second heating element so that a temperature difference between a glass temperature of a third region positioned between a first region and a second region of the glass and a glass temperature of the first region or a glass temperature of the second region does not exceed an upper limit value.