Phase-Cut Dimming Control With Power-Line Color Temperature Encoding
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Solution Overview
Problem
Existing dimming controllers using power line communication technology can only carry dimming or color adjusting information at a time, resulting in slow response speed and complicated installation due to the need for additional dimming lines, which increases reconstruction costs.
Innovation Solution
A dimming and color temperature adjusting control device that utilizes a zero-crossing detection circuit, control circuit, and carrier phase-cutting circuit to encode and carry color temperature signals on a phase-cut dimming signal through the existing power supply line, allowing simultaneous adjustment of brightness and color temperature without additional dimming lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power line communication technology is used to carry dimming or color adjusting information on the mains, then additional dimming lines are not needed, but the response speed is slow and only one type of information can be carried at a time
Solution Approach 1:
The patent combines dimming control and color temperature control into a single control device that outputs both signals through the same power line. The control circuit generates a phase-cut dimming signal and a color temperature encoding signal, which are then combined and transmitted simultaneously over the mains power line to the lighting fixture, eliminating the need for separate control lines while enabling fast simultaneous adjustment of both parameters.
Solution Approach 2:
The patent uses periodic carrier wave modulation to encode color temperature information on the phase-cut dimming signal. By modulating the color temperature encoding signal onto a carrier wave and combining it with the phase-cut dimming signal, the system achieves fast response speed while transmitting multiple types of control information simultaneously through the power line.
2Device complexity
If power line communication technology is used to carry dimming or color adjusting information on the mains, then additional dimming lines are not needed, but only one type of information can be carried at a time
Solution Approach 1:
The patent designs a universal control device that can simultaneously perform dimming control and color temperature control functions through a single output interface. The control circuit is capable of generating both phase-cut dimming signals and color temperature encoding signals, which are combined and transmitted through the same power line connection, making the device versatile and eliminating the need for additional wiring.
Solution Approach 2:
The patent merges dimming control and color temperature control into a single control device that outputs both signals through the same power line. The control circuit generates a phase-cut dimming signal and a color temperature encoding signal, which are then combined and transmitted simultaneously over the mains power line to the lighting fixture, eliminating the need for separate control lines while enabling fast simultaneous adjustment of both parameters.
3Adaptability or versatility
If additional dimming lines are laid to adjust light color temperature, then control functionality is improved, but installation becomes complicated and reconstruction cost increases
Solution Approach 1:
The patent designs a universal control device that can simultaneously perform dimming control and color temperature control functions through a single output interface. The control circuit is capable of generating both phase-cut dimming signals and color temperature encoding signals, which are combined and transmitted through the same power line connection, making the device versatile and eliminating the need for additional wiring.
Solution Approach 2:
The patent utilizes the existing power line infrastructure to carry control signals, making the power line serve dual purposes: both power delivery and control signal transmission. This self-service approach eliminates the need for additional control wiring, simplifying installation and reducing reconstruction costs while maintaining full control functionality.
Data Source
AI summary
The present disclosure discloses a dimming and color temperature adjusting control device, includes a housing, and a zero-crossing detection circuit, a control circuit, a carrier phase-cutting circuit and a power supply circuit arranged on a control circuit board in the housing, where the housing is provided with a control panel, and the control panel is provided with a color temperature operation module and a brightness operation module. The zero-crossing detection circuit is used for detecting a zero-crossing point position of mains. The control circuit is used for calculating a chopping position according to a brightness adjustment amount and the zero-crossing point position, and encoding a color temperature adjustment amount to generate a color temperature encoding signal. The carrier phase-cutting circuit is used for chopping mains according to the chopping position to generate a phase-cut dimming signal and carrying the color temperature encoding signal on the phase-cut dimming signal.