Vehicle Window Fogging Suppression via External Temperature Control
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Solution Overview
Problem
Existing window fogging suppression systems in vehicles often activate unnecessarily due to the relationship between outside temperature and vehicle speed, leading to inefficient heating.
Innovation Solution
A fogging suppression apparatus that includes a heater specifically designed for windows, controlled by a unit that acquires external temperature data and activates only when the outside temperature is low and the air conditioning is requested, using intermittent heating to prevent overheating and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heater is activated based only on outside temperature and vehicle speed thresholds, then fogging suppression is provided, but unnecessary heating occurs leading to increased power consumption
Solution Approach 1:
The control unit continuously monitors multiple parameters (outside temperature, vehicle speed, air conditioning operation state) and adjusts heater activation based on feedback from these sources. The system only activates the heater when all conditions indicate actual fogging risk, preventing unnecessary heating and reducing power consumption while maintaining reliable fogging suppression.
Solution Approach 2:
The heater control system transitions from static threshold-based activation to dynamic multi-condition monitoring. The control unit adapts heater activation decisions based on real-time changes in outside temperature, vehicle speed, and air conditioning operation state, optimizing power consumption while maintaining fogging suppression effectiveness across varying operating conditions.
2Reliability
If the heater is activated under broader conditions to ensure fogging suppression, then fogging is prevented, but heating occurs at unnecessary timings wasting energy
Solution Approach 1:
The control unit uses feedback from air conditioning operation state detection to refine heater activation criteria. By monitoring whether the air conditioning is actually operating, the system determines true fogging risk and activates the heater only when necessary, eliminating energy waste from premature or unnecessary heating while maintaining comprehensive fogging suppression coverage.
Solution Approach 2:
The system changes the activation parameters from simple temperature and speed thresholds to a composite condition including air conditioning operation state. This parameter change enables more precise control, activating the heater only when all conditions (low outside temperature, sufficient vehicle speed, and air conditioning operation) indicate actual fogging risk, thereby reducing energy waste while maintaining suppression coverage.
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
Effectively suppresses window fogging while preventing unnecessary heating, maintaining optimal window temperature and reducing power consumption by activating the heater only when necessary.
Implementation Method 1
a heater 20 that heats the window 2
Data Source
AI summary
A fogging suppression apparatus that suppresses fogging of a window of vehicle, comprises an acquisition unit that acquires an external temperature of the vehicle, a heater that heats the window, the heater differing from an air conditioning apparatus including a blower provided in the vehicle; and a control unit that controls the heater so as to heat the window when the external temperature of the vehicle is lower than or equal to a predetermined temperature and there is a request for activation of the air conditioning apparatus.