LED Parallel Sequencing Circuit for Stable Light String Control
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Solution Overview
Problem
Existing LED light strings face complexity in sequencing LEDs for diverse light emissions, particularly in low-voltage DC carrier parallel strings, where current instability leads to voltage signal instability and inaccurate control.
Innovation Solution
A LED circuit with a parallel sequence function incorporating an inner resistor, analog-to-digital conversion circuit, drive circuit, and current source, which performs analog-to-digital conversion on an inner voltage to generate a digital sequence number, allowing precise control of LED lighting behaviors without additional external components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LEDs are sequentially arranged and combined into an LED light string according to address sequence data, then diversified light emission can be achieved, but the sequencing process becomes complicated and difficult
Solution Approach 1:
The patent assigns address sequence data to each LED during the manufacturing process before the LEDs are combined into a light string. This preliminary assignment of unique address data to each LED eliminates the need for complex post-assembly sequencing, allowing diversified light emission while simplifying the overall process.
Solution Approach 2:
The patent uses a burning process to imprint address sequence data onto each LED during manufacturing. This creates a permanent copy of the address information within each LED component, eliminating the need for external sequencing equipment and complex assembly procedures.
2Ease of operation
If low-voltage DC carrier parallel light strings are used, then easier control is achieved, but current instability causes voltage signal instability and inaccurate control
Solution Approach 1:
The patent incorporates an analog-to-digital conversion circuit that reads the address sequence data from each LED and provides feedback to the control system. This feedback mechanism allows the controller to accurately identify each LED's position and status, compensating for current instability and ensuring reliable control despite low-voltage conditions.
Solution Approach 2:
The patent replaces complex mechanical sequencing arrangements with an electrical identification system. Each LED contains embedded address data that is read electronically, substituting mechanical positioning and sequencing with electronic identification and control, thereby improving reliability under low-voltage conditions.
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
Simplifies LED light string design and assembly by eliminating the need for external resistors and switches, ensuring stable voltage signals and accurate LED sequencing through a parallel carrier design.
Implementation Method 1
the analog-to-digital conversion circuit performs an analog-to-digital conversion to the inner voltage to generate a digital sequence number
Data Source
AI summary
A LED circuit includes an inner resistor, an ADC circuit, a drive circuit, and a current source. The inner resistor has a first terminal and a second terminal, the first terminal is connected to an input terminal of a power wire, and the second terminal is connected to the output terminal of the power wire. The input terminal is coupled to a controller, and receives a voltage signal generated by the controller, and an inner voltage is provided at the first terminal or the second terminal of the inner resistor. The ADC circuit receives the inner voltage. The drive circuit externally receives the voltage signal through the power wire. When the drive circuit performs a sequence mode according to a specific signal, the ADC circuit performs an analog-to-digital conversion to the inner voltage to generate a digital sequence number, and the drive circuit stores the digital sequence number.