Smart Lighting Controller Postpones Scene Transitions
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Solution Overview
Problem
Smart lighting systems often transition to pre-scheduled lighting scenes at inconvenient times, disrupting users who are present in a room, as the timings are rigidly adhered to without considering user presence or activity.
Innovation Solution
A controller that receives lighting sequences and uses user presence data to postpone scene transitions until the user leaves the room, utilizing sensors to determine user presence and adjust lighting scenes accordingly, ensuring that scene changes occur only when the user is not present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If pre-specified lighting sequences are implemented with rigid timing, then lighting automation and energy efficiency are improved, but user convenience and comfort deteriorate due to disruptive scene transitions
Solution Approach 1:
The lighting control system dynamically adjusts the timing of scene transitions based on real-time user presence detection. Instead of following a rigid pre-specified schedule, the system adapts its behavior by postponing transitions when users are detected in rooms, thereby maintaining automation while improving user convenience and comfort.
2Loss of energy
If lighting scenes transition at scheduled times, then energy efficiency is improved, but lighting reliability for user activities deteriorates
Solution Approach 1:
The system incorporates feedback from user presence detection to control lighting scene transitions. Sensors detect whether users are present in rooms and provide this information to the control system, which then decides whether to execute scheduled transitions or postpone them, ensuring lighting reliability for ongoing user activities while maintaining energy efficiency.
3Device complexity
If scene transitions occur at fixed times, then system complexity is reduced, but adaptability to user needs deteriorates
Solution Approach 1:
The lighting control system performs multiple functions: it executes pre-specified lighting sequences for energy efficiency while simultaneously detecting user presence and adapting transitions accordingly. This multi-functionality allows the system to maintain relatively simple architecture while achieving high adaptability to user needs through integrated sensor-based presence detection.
Data Source
AI summary
According to a first aspect disclosed herein, there is provided a controller for controlling at least one first luminaire to render lighting scenes in a first environment; the controller comprising: a first input for receiving a lighting sequence defining a first lighting scene to be rendered in the first environment at least until a trigger is received and a second lighting scene to be rendered in response to receiving said trigger in the first environment, thus replacing the first lighting scene; a second input arranged to receive data indicating user presence within the first environment; an output; and a processor arranged to: receive the lighting sequence via the first input; control, via the output, the at least one first luminaire to render the first lighting scene in accordance with the lighting sequence; receive an indication of the trigger and in response thereto, determine, based on data received via the second input, a user presence value within the first environment; and control, via the output, the at least one first luminaire to render the second lighting scene on condition that the determined user presence value does not exceed a predetermined threshold presence value.