Luminaire Control System Ghost Light Elimination
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Solution Overview
Problem
Existing luminaire control systems face issues with ghost light due to sudden current surges and inconvenient operation when switching between mobile control and physical wall switches, leading to user dissatisfaction and potential device damage.
Innovation Solution
Incorporating a controllable switch in the luminaire circuit between the power supply driver and the light-emitting unit, connected to a controller that receives control signals from user devices, allowing seamless switching and dimming through both virtual and physical switches, thereby preventing ghost light and simplifying user operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional control architecture with drive power source plus controller is used, then the luminaire can be controlled for brightness and light color adjustment, but ghost light occurs due to sudden current surges
Solution Approach 1:
The controllable switch is activated in advance before the actual lighting control operation. By pre-establishing the controlled circuit connection, the switch prevents sudden current surges when the lighting is activated, thereby eliminating ghost light while maintaining stable brightness and color control functionality
Solution Approach 2:
A controllable switch is introduced as an intermediary component between the drive power source and the light-emitting unit. This mediator controls the circuit connection state, regulating current flow to prevent sudden surges that cause ghost light, while still allowing the controller to adjust brightness and light color through the power driver
2Ease of operation
If only physical wall switches are used for control, then the circuit can be physically switched on and off, but operation becomes inconvenient when switching between mobile control and physical switches
Solution Approach 1:
The control system is designed to accept multiple types of control signals from both physical wall switches and mobile control devices. The controller unit processes signals from either source to achieve the same lighting control functions, enabling users to switch between control methods without operational conflicts or additional complexity
Solution Approach 2:
The controller monitors and manages control signals from both physical switches and mobile devices, coordinating their operations to prevent conflicts. The system tracks the state of both control interfaces and adjusts its response accordingly, ensuring seamless switching between control methods without requiring complex user intervention
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 effectively eliminates ghost light issues and enhances user convenience by enabling smooth transitions between control methods, ensuring reliable and user-friendly luminaire operation.
Implementation Method 1
the power supply driver is connected to external alternating current, and converts an alternating current into a direct current and provides the direct current to the light-emitting unit
Data Source
AI summary
The present disclosure relates to a luminaire and a luminaire control system. The luminaire includes a controller, a power supply driver, a controllable switch, and a light-emitting unit; the power supply driver is connected to external alternating current and supplies power to the controller and the light-emitting unit; the controller is connected to both the power supply driver and the controllable switch through control signal wires; the controllable switch is disposed in a circuit between the power supply driver and the light-emitting unit; wherein the controller is in wired or wireless connection with a user control device to receive a control signal from a user; and a total number of the controllable switch disposed between the power supply driver and the light-emitting unit is one or more.