Dimmer System Automatic RF Frequency Provisioning
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Solution Overview
Problem
Existing methods for associating dimmers with dimmable LED lamps, especially when the lamp is already ceiling-mounted, are cumbersome and require manual input such as knowing the lamp's serial number or simultaneous actuation of switches, which is not practical for simple user interfaces or stationary dimmers.
Innovation Solution
A dimmer system with a user interface, controller, and wireless adapter that automatically associates with a dimmable LED lamp by transmitting provisioning information at a specific RF frequency after the lamp is turned on, allowing the lamp to distinguish control signals from other dimmers and enabling wireless control of the lamp's intensity and color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual association techniques (such as clicking serial numbers or simultaneous actuation) are used, then the dimmer can be associated with the LED lamp, but the user interface complexity increases and the ease of operation deteriorates
Solution Approach 1:
The system performs automatic association without requiring user intervention. The dimmer and LED lamp autonomously exchange provisioning information and establish connection through wireless communication, eliminating the need for manual serial number entry or simultaneous actuation of switches.
Solution Approach 2:
The association process is automatically initiated when the LED lamp is first powered on. The system preemptively establishes the connection during the initial power-on sequence, so that by the time the user intends to use the dimmer, the association is already complete and no further action is needed.
2Reliability
If manual association techniques are used, then the dimmer can be configured, but the device complexity increases due to additional interface elements
Solution Approach 1:
The complex association logic is extracted from the user interface and embedded within the system's automatic provisioning process. The UI is simplified to basic controls, while the backend automatically handles frequency negotiation, provisioning information exchange, and connection establishment.
Solution Approach 2:
Manual mechanical association operations (such as button pressing or code entry) are replaced with automatic wireless electronic communication. The dimmer and LED lamp exchange provisioning information and establish connection through automated wireless protocols, eliminating the need for complex physical interface interactions.
3Ease of manufacture
If ceiling-mounted LED lamps are used, then the lighting installation is complete, but the actuation operation for manual association becomes inaccessible
Solution Approach 1:
The system autonomously performs the association process without requiring physical access to or actuation near the ceiling-mounted LED lamp. The automatic provisioning occurs through wireless communication initiated during power-on, eliminating the need for users to reach or interact with the inaccessible ceiling fixture.
4Ease of operation
If automatic association is implemented, then the ease of operation improves, but the device complexity increases due to additional wireless communication components
Solution Approach 1:
The wireless communication capability is integrated into the existing dimmer and LED lamp systems, serving dual purposes: it enables automatic association provisioning and also provides the foundation for future wireless dimming control functionality. This multi-functionality justifies the added complexity by providing immediate association benefits and enabling additional control capabilities.
Data Source
AI summary
A dimmer comprising a controller and a wireless adapter coupled to the controller. The dimmer is connected to a LED lamp through a switched AC line. The controller is configured to send to the lamp user control information, and provisioning information for allowing the lamp to distinguish the control information transmitted by the dimmer from control information transmitted by other dimmers in the vicinity of the lamp. For performing the provisioning, the controller is configured, after turning-ON the lamp, to wirelessly transmit thereto, at a provisioning frequency F0, provisioning information comprising an identification of an RF frequency Fn that is preselected as the dimmer-specific frequency for controlling the lamp, and to vary the wireless transmit frequency from F0 to Fn for henceforth sending thereat the control information to the lamp.