Two-Wire RGB Lamp Signal Transmission With Voltage-Level Detection
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Solution Overview
Problem
Existing lamp systems using a four-wire system for power and control signal transmission are complex, costly to install and maintain, and limit system expansion due to the lack of a fixed voltage output, leading to potential data loss during control signal transmission.
Innovation Solution
A control signal transmission method for a lamp system that converts a four-wire system into a two-wire system by integrating RGB control signals into a combined control signal using detecting circuits and a two-wire transmission circuit, allowing for the extraction and transmission of individual RGB control signals with different voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a four-wire system is used for power and control signal transmission, then control signals can be transmitted to drive lamps, but the system becomes complex with more wires, leading to higher installation cost, use cost and maintenance cost
Solution Approach 1:
The patent combines multiple control signals (R, G, B) and power transmission into a single two-wire system. The controller multiplexes control data onto one wire while the other wire carries power, eliminating the need for separate RGB signal wires and reducing wiring complexity while maintaining control functionality
Solution Approach 2:
The two-wire system performs multiple functions simultaneously: one wire transmits both power and control data, while the other wire provides power and ground reference. This multi-functional approach replaces the dedicated four-wire configuration, reducing installation complexity and cost
2Adaptability or versatility
If a four-wire system is used for control signal transmission, then lamps can be driven with control signals, but the lack of fixed voltage output limits system expansion and may cause control data loss
Solution Approach 1:
The patent transforms the control signal transmission by changing voltage parameters. The system uses distinct voltage levels (0V, 3.3V, 5V) to represent different control states, providing fixed voltage output that ensures reliable data transmission and enables system expansion without data loss
Solution Approach 2:
The patent introduces a converter as an intermediary device that receives control signals from the controller and transforms them into the appropriate voltage levels for the two-wire system. This converter ensures reliable control data transmission by maintaining proper voltage levels while enabling system expansion
3Ease of operation
If a four-wire system is used, then RGB control signals can be transmitted separately, but more wires are required which increases installation and maintenance costs
Solution Approach 1:
The patent merges the four separate wires (power, ground, R, G, B control signals) into a two-wire configuration. Control data for all three colors is multiplexed onto a single communication wire, reducing the quantity of wires needed while simplifying installation and maintenance
Data Source
AI summary
An LED lamp system driven by a two-wire transmission circuit, includes an LED lamp with red lamp beads, green lamp beads and blue lamp beads; a red-line control signal detecting circuit configured to detect a red-line control signal from a combined control signal transmitted by the two-wire transmission circuit and output the red-line control signal to the red lamp beads; a green-line control signal detecting circuit configured to detect a green-line control signal from the combined control signal transmitted by the two-wire transmission circuit and output the green-line control signal to the green lamp beads; and a blue-line control signal detecting circuit configured to detect a blue-line control signal from the combined control signal transmitted by the two-wire transmission circuit and output the blue-line control signal to the blue lamp beads.