Vehicle Display Controller Thermal Management via Dynamic Processing Reduction
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Solution Overview
Problem
Vehicle display devices generate excessive heat as controllers perform more processing, leading to a need for a solution that prevents further temperature increase while maintaining the ability to display critical driving state images.
Innovation Solution
A vehicle display device with a controller that reduces processing and includes a cooling unit, monitored by a CAN microcomputer, which adjusts the blower fan's rotation rate based on temperature and outdoor conditions to prevent overheating, and restricts non-essential processing when temperatures exceed a predetermined value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the controller performs more processing to display driving state images, then the display functionality is improved, but the temperature of the controller increases
Solution Approach 1:
The patent applies dynamics by making the controller's processing capability adjustable rather than fixed. The controller dynamically changes its operational state based on temperature feedback - when temperature exceeds a threshold, it reduces processing load by limiting display updates or reducing processing frequency, and when temperature is acceptable, it restores full processing capability. This dynamic adaptation resolves the contradiction between maintaining display functionality and preventing overheating.
Solution Approach 2:
The patent changes the operational parameters of the controller based on temperature conditions. It monitors temperature as a parameter and adjusts processing parameters (such as update frequency, processing load, or operational mode) accordingly. This parameter-based control allows the system to optimize between display performance and thermal management, resolving the technical contradiction.
2Temperature
If the controller reduces processing to prevent temperature increase, then the temperature control is improved, but the display functionality deteriorates
Solution Approach 1:
The patent implements periodic action through temperature monitoring and conditional processing reduction. Instead of continuously reducing processing, the system periodically checks temperature and only reduces processing when necessary (when temperature exceeds threshold). This periodic intervention maintains full functionality during normal operation while providing thermal protection when needed, resolving the contradiction between temperature control and display functionality.
Solution Approach 2:
The controller dynamically adjusts its processing level based on real-time temperature conditions. When temperature is within acceptable range, full processing capability is maintained for optimal display functionality. When temperature exceeds threshold, processing is dynamically reduced to control temperature. This dynamic behavior ensures that the system maintains productivity when possible while preventing overheating.
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 solution effectively reduces heat generation in the controller, allowing it to display essential driving state indicators without further temperature increase, ensuring safe operation and preventing damage from excessive heat.
Implementation Method 1
a cooling unit configured to cool the controller, wherein the state of the cooling unit is determined by the CAN microcomputer
Data Source
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AI summary
A vehicle display device (1) includes a display unit (10) that displays at least an image relating to a driving state of a vehicle, a controller (20) that generates image data of an image to be displayed on the display unit, and a temperature sensor (SR2) that measures a temperature of the controller (20). The controller (20) has a function of performing a first processing other than generating image data relating to the driving state. When the temperature of the controller (20) is equal to or higher than a predetermined first value, the controller (20) generates the image data relating to the driving state while reducing an amount of first processing performed by the controller (20) .