Smart Lighting Thermal Color Drift Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional outdoor lighting systems face issues with slow communication speeds leading to system latency and thermal color drift in LED lights, which affect the desired lighting effects.
Innovation Solution
The implementation of a method where smart lights receive parameters of a lighting program from a controller, synchronize using preliminary and updated synchronization signals, and execute a rendering algorithm to determine frame values for consistent lighting output. Additionally, active thermal correction is applied by adjusting drive currents to color channels based on temperature measurements to compensate for thermal color drift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used to control lights, then ease of installation is improved, but communication speed deteriorates
Solution Approach 1:
The system performs preliminary actions by pre-calculating and storing lighting program parameters locally at each light device, and by establishing synchronized timers before actual lighting control is needed. This allows the lights to operate independently of continuous wireless communication during execution, reducing communication requirements and improving effective control speed.
Solution Approach 2:
The patent introduces an intermediary mechanism using synchronized timers and local parameter storage as mediators between the controller and light devices. Instead of direct real-time wireless control, the system uses these intermediaries to distribute control logic and synchronize operation, reducing communication bandwidth requirements while maintaining coordination.
2Productivity
If lighting programs with rapid intervals are implemented, then lighting effect is improved, but system latency increases
Solution Approach 1:
The system pre-calculates and stores complete lighting program parameters locally at each light device before execution. The timers are synchronized in advance, allowing rapid interval lighting effects to be executed from pre-prepared data without waiting for continuous controller instructions, thereby reducing system latency while maintaining high-speed lighting effects.
Solution Approach 2:
Each light device operates autonomously by executing lighting programs from locally stored parameters and synchronized timers without requiring continuous controller intervention. This self-service capability allows rapid lighting transitions to occur at each device independently, eliminating communication delays while maintaining desired lighting effects.
3Illumination intensity
If LED lights operate at high intensity, then illumination output is improved, but thermal color drift increases
Solution Approach 1:
The system incorporates temperature sensing and feedback mechanisms that continuously monitor the thermal state of LED components. Based on this feedback, the controller dynamically adjusts operating parameters or applies correction factors to compensate for thermal color drift, maintaining color accuracy even at high illumination intensities.
Solution Approach 2:
The patent implements dynamic parameter adjustments based on temperature conditions. The system changes operational parameters such as drive current, pulse width modulation duty cycle, or color temperature compensation factors in response to thermal variations, allowing high illumination output while maintaining consistent color accuracy through real-time parameter adaptation.
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 solution enhances communication speed and reduces latency in outdoor lighting systems, while active thermal correction ensures accurate color rendering and maintains desired lighting effects by compensating for thermal color drift.
Implementation Method 1
receiving, from the controller, a preliminary synchronization signal, and initiating a timer based on the preliminary synchronization signal
Implementation Method 2
lights that are configured to emit different colors, such as light emitting diodes, may experience 'thermal color drift' where the actual color output of the light changes due to a temperature of the light
Data Source
AI summary
A method for implementing a lighting program by a plurality of smart lights is disclosed. The method may include receiving, from a controller, one or more parameters of a lighting program at a plurality of smart lights. Each smart light may have a light index. The method may also include storing the one or more parameters of the lighting program, receiving, from the controller, a preliminary synchronization signal, and initiating a timer based on the preliminary synchronization signal. The method may further include configuring a rendering algorithm based on input including at least the light index, the one or more parameters of the lighting program, and a current time on the timer, executing the rendering algorithm to determine a frame value, and implementing a lighting output consistent with the determined frame value.