Dual Light Module Power Balancing for Headlight Heat Control
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Solution Overview
Problem
Existing methods for controlling light modules in motor vehicle headlights do not effectively manage temperature differences between multiple light sources, leading to potential overheating and inefficient heat management.
Innovation Solution
A computer-implemented method that adjusts the electric power of first and second light modules based on their respective temperatures, using a sigmoid function to determine the power proportion, ensuring that the total power remains constant while reducing the risk of overheating by redistributing power between modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light modules are operated at high power to increase total brightness, then illumination intensity is improved, but temperature of individual modules increases leading to overheating
Solution Approach 1:
The headlight system is divided into multiple independent light modules (first light module and second light module), each with its own temperature monitoring and power control. This segmentation allows the total illumination requirement to be distributed across multiple modules, preventing any single module from overheating while maintaining overall brightness.
Solution Approach 2:
The power supply to each light module is dynamically adjusted based on real-time temperature measurements. When one module becomes too hot, its power is reduced while another module's power is increased, creating a dynamic load-balancing system that prevents overheating while maintaining constant total illumination.
2Temperature
If power is reduced to prevent overheating, then temperature is controlled, but total brightness decreases
Solution Approach 1:
Multiple light modules are combined to work together as a unified illumination system. When one module's power is reduced due to temperature constraints, another module compensates by increasing its power output. The combined output of all modules maintains the required total brightness while individual module temperatures remain controlled.
Solution Approach 2:
The system changes the power parameter of individual light modules based on their temperature state. By monitoring temperature and dynamically adjusting power levels, the system maintains optimal operating temperatures while the sum of power across all modules remains constant, preserving total illumination intensity.
3Reliability
If temperature monitoring and dynamic power adjustment is implemented, then overheating is prevented, but system complexity increases
Solution Approach 1:
Temperature sensors continuously monitor the temperature of each light module and feed this information back to the control system. The controller automatically adjusts the power supply to each module based on the feedback, creating a closed-loop control system that prevents overheating through simple, rule-based adjustments rather than complex algorithms.
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
This approach prevents excessive heating by dynamically adjusting power distribution between light modules, maintaining consistent brightness and reducing the risk of overheating, even when one module becomes warmer than the other.
Implementation Method 1
a light module is understood to mean, in particular, a component on which multiple light sources, for example, light-emitting diodes, are arranged
Implementation Method 2
the light sources can be designed to emit electromagnetic radiation with a wavelength between 380 nm and 780 nm
Implementation Method 3
Depending on the power, heat is generated by the respective module
Data Source
AI summary
A computer-implemented method for controlling two light modules, comprising the following steps: supplying a first light module with a first electric power and a second light module with a second electric power; determining a first temperature of the first light module and a second temperature of the second light module; and adjusting the first and second electric power as a function of the first and second temperature.