Sensor-Based Dimming Profiles for Flicker-Free Light Output
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Solution Overview
Problem
Existing electrical devices lack efficient control mechanisms for dimming profiles, leading to delays, flicker, and inconsistent light output, particularly in environments where precise brightness adjustments are required.
Innovation Solution
A dimming profile processor determines a customized dimming profile based on light sensor data and dimming settings, including a first and second dimming level and a dimming curve, to control lighting loads effectively, minimizing delays and flicker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional dimming control is used, then electrical devices can provide convenience and entertainment, but delays and flicker occur at low light levels
Solution Approach 1:
The system performs preliminary characterization by measuring light sensor data across the full dimming range before operation. This preliminary action captures the actual light output behavior including any delays or flicker characteristics, allowing the system to pre-calculate compensation parameters that eliminate these harmful effects during normal operation.
Solution Approach 2:
The system continuously monitors light sensor data and compares actual light output against the desired dimming profile. When deviations such as flicker or delays are detected, the feedback mechanism adjusts the dimming control signals in real-time to compensate for these effects, ensuring stable and smooth light output across all dimming levels.
2Speed
If aggressive dimming control is applied, then response time improves, but sudden brightness changes occur
Solution Approach 1:
The system dynamically adjusts the dimming profile based on the actual lighting conditions and the specific characteristics of the lighting load. By making the dimming curve adaptive rather than fixed, the system can optimize response time in different operating scenarios while preventing sudden brightness changes that would occur with aggressive fixed-profile dimming.
Solution Approach 2:
The system changes the dimming parameters (such as the slope of the dimming curve, transition thresholds, and timing characteristics) based on measured light sensor data. This allows the system to achieve fast response times when conditions permit while automatically reducing aggressiveness to prevent sudden brightness changes when the lighting load or environment requires smoother transitions.
3Device complexity
If simple dimming control is used, then device complexity is reduced, but light output consistency deteriorates
Solution Approach 1:
The system performs self-characterization by automatically measuring its own light output across the dimming range using an integrated light sensor. This self-service approach eliminates the need for external calibration equipment or complex pre-programmed profiles, achieving consistent light output while keeping the device relatively simple. The system generates its own dimming profile based on empirical measurements rather than requiring complex external configuration.
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 provides smooth and consistent light output by setting a first dimming level to eliminate delays and flicker at low levels, and a maximum level to prevent sudden brightness changes, enhancing user experience.
Implementation Method 1
A dimming profile processor receives light sensor data from a light sensor. The light sensor data indicates measurements of light produced by a lighting load
Data Source
AI summary
An electronic device is described. The electronic device includes a dimming profile processor. The dimming profile processor is configured to receive light sensor data from a light sensor. The light sensor data indicates measurements of light produced by a lighting load over a range of dimming settings. The processor is also configured to determine a dimming profile based on the light sensor data and dimming settings data.