Illuminance Calibration with Feedback for Precise Target Lighting
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Solution Overview
Problem
Current lighting devices cannot effectively adjust illuminance at a target position, leading to inadequate user experience and increased power consumption.
Innovation Solution
An illuminance calibration device with a processing module and light detecting module that adjusts lighting device brightness to achieve target illuminance by calculating a brightness-illuminance relation parameter, using a mobile device application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lighting devices adjust brightness of light sources, then brightness can be changed, but illuminance at target position cannot be precisely controlled
Solution Approach 1:
The system uses a light detecting module to continuously monitor the illuminance at the target position and feeds this information back to the processing module. The processing module then adjusts the brightness of the lighting device based on the feedback to achieve the target illuminance, enabling precise control through closed-loop feedback.
Solution Approach 2:
The patent replaces manual mechanical adjustment of lighting with an automated electronic control system. The processing module automatically calculates and adjusts the brightness based on detected illuminance and target values, substituting manual operation with automated computational control.
2Illumination intensity
If lighting devices increase brightness to meet illuminance requirements, then target illuminance can be achieved, but power consumption increases
Solution Approach 1:
The light detecting module continuously monitors illuminance at the target position and provides feedback to the processing module. This enables the system to adjust brightness dynamically, using only the necessary amount of power to achieve the target illuminance rather than operating at fixed high brightness levels.
Solution Approach 2:
The system dynamically changes the brightness parameter of the lighting device based on real-time illuminance conditions and target requirements. By adjusting the brightness parameter to the minimum necessary level to achieve target illuminance, the system optimizes power consumption while meeting illumination requirements.
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 device allows precise illuminance adjustment, reducing power consumption and enhancing user experience while being cost-effective and flexible.
Implementation Method 1
The light detecting module detects the current illuminance of a target position
Data Source
AI summary
An illuminance calibration device includes a processing module and a light detecting module. The processing module executes an illuminance calibration process. The light detecting module detects the current illuminance of a target position and transmits the current illuminance to the processing module. When the processing module is executing the illuminance calibration process, the processing module transmits a test signal to a lighting device to adjust the brightness of the lighting device by the minimal brightness adjusting unit of the lighting device so as to obtain the adjusted current illuminance of the target position. Then, the processing module generates a brightness adjusting signal according to the current illuminance, the adjusted current illuminance, the minimal brightness adjusting unit and a target illuminance in order to adjust the brightness of the lighting device, such that the illuminance of the target position reaches the target illuminance.