Lighting Control System for Constant Target Area Illumination
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Solution Overview
Problem
Existing lighting control systems cannot maintain constant illumination on specific target areas, such as working tables, due to their reliance on overall space illumination and inability to adjust for external light variations.
Innovation Solution
A lighting control method and system that uses an illumination sensor to detect and adjust lamp brightness based on target area illumination, calculating and maintaining consistent illumination values by accounting for external light through illumination transfer coefficients, ensuring constant illumination regardless of external light changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the existing constant illumination control system controls the overall illumination level of the space, then the energy saving effect is achieved, but the target area cannot achieve constant illumination
Solution Approach 1:
The patent applies local quality by differentiating between overall space illumination control and target area illumination control. The system uses two sensors: one for overall space illumination and another specifically positioned to detect illumination on the target area (work table). This allows the system to maintain constant illumination on the target area while optimizing overall energy consumption, resolving the contradiction between energy saving and target area illumination quality.
2Device complexity
If the illumination sensor detects only the illumination at its location, then the detection is simple, but it cannot reflect the actual illumination of the target area
Solution Approach 1:
The patent uses the target area itself as an intermediary element. The illumination sensor is positioned to receive light reflected from the target area, making the target area a mediator between the light source and the sensor. This approach allows the sensor to indirectly measure the illumination on the target area without requiring direct contact or complex positioning, maintaining simplicity while achieving accurate measurement.
3Device complexity
If the system does not account for external light variations, then the control system is simple, but it cannot maintain constant illumination when external light changes
Solution Approach 1:
The patent implements feedback control by continuously monitoring the illumination level on the target area using the detection module and adjusting the lamp brightness accordingly. The control module receives real-time data from the illumination sensor and dynamically adjusts the lamp output to compensate for external light variations, ensuring constant illumination on the target area while maintaining system simplicity through automated feedback loops.
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 effectively maintains constant illumination on target areas by adjusting lamp brightness according to calculated target illumination values, ensuring consistent lighting throughout the illumination period despite external light variations.
Implementation Method 1
the illumination detected by the illumination sensor is the sum of the illumination value of the light from the lamp reflected to the position of the illumination sensor through the target area
Data Source
AI summary
The invention discloses a lighting control method, by setting the first target illumination value of the illumination sensor so that the illumination of the target area is the set illumination value. Later, at each time node, the system calculates the current second target illumination value of the illumination sensor, and then adjusts the brightness of the lamp so that the detected value of the illumination sensor reaches the second target illumination value. When the detected value of the illumination sensor reaches the second target illumination value, the illumination of the target area can be consistent with the set illumination value of the target area at this time. The present invention can make the target area to substantially maintain constant illumination during the illumination period.