Backlight Module Cooling Control for Lower Fan Energy Use
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Solution Overview
Problem
Existing vehicle cooling systems struggle to effectively manage the thermal comfort of both the vehicle cockpit and electronic devices, such as display units, while maintaining efficient energy use.
Innovation Solution
A cooling system with temperature sensors and fans controlled by a temperature controller to dynamically adjust cooling based on sensed temperatures in the cockpit and display modules, utilizing air-conditioning systems and fans to maintain optimal thermal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling fan operates continuously to maintain cooling, then the thermal comfort of occupants and electronic devices is improved, but the energy consumption increases
Solution Approach 1:
The cooling fan's operating state is dynamically adjusted based on real-time temperature monitoring. The system transitions from static continuous operation to dynamic state-based control, switching between on and off states according to whether temperatures exceed thresholds, thereby reducing unnecessary energy consumption while maintaining thermal comfort when needed
Solution Approach 2:
Temperature sensors continuously monitor the cockpit and display module temperatures, providing feedback to the control unit. This feedback mechanism enables the system to make informed decisions about fan operation, activating cooling only when temperature thresholds are exceeded, thus optimizing the balance between thermal comfort and energy consumption
2Reliability
If the cooling fan operates continuously to cool electronic devices, then the reliability of electronic devices is improved, but the loss of energy increases
Solution Approach 1:
Instead of continuous full cooling operation, the system applies partial cooling action only when and where needed. The control unit selectively activates the cooling fan based on specific temperature conditions in different zones (cockpit vs. display module), providing sufficient cooling to maintain device reliability without excessive energy waste during normal operating conditions
Solution Approach 2:
The system changes the operational parameters of the cooling fan based on temperature conditions. By monitoring temperature parameters and adjusting fan operation accordingly, the system maintains device reliability through adequate cooling while minimizing energy loss by avoiding unnecessary fan operation during acceptable temperature ranges
3Measurement precision
If multiple temperature sensors are deployed to monitor both cockpit and display module, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The monitoring system is segmented into distinct sensing zones (cockpit area and display module area) with dedicated temperature sensors for each. This segmentation enables precise local temperature measurement without requiring a single complex sensor system, as each sensor focuses on a specific thermal zone, simplifying the overall measurement architecture while maintaining high precision
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 ensures enhanced thermal comfort for vehicle occupants and electronic devices by dynamically adjusting cooling modes, optimizing energy usage and reducing unnecessary fan operation.
Implementation Method 1
The temperature sensor senses a first temperature of the backlight module and a second temperature of the backlight module
Implementation Method 2
The cooling fan provides a cooling path
Data Source
AI summary
A cooling system and a control method of the cooling system are provided. The cooling system includes a display device, a temperature sensor, a cooling fan and a temperature controller. The display device includes a backlight module. The temperature sensor is configured in the backlight module. The temperature sensor senses a first temperature of the backlight module and a second temperature of the backlight module. The first temperature is higher than the second temperature. The cooling fan is configured in the backlight module. The cooling fan provides a cooling path. The temperature controller receives the first temperature and the second temperature from the temperature sensor, and controls the cooling fan to enable or disable.