Programmable Light Source Control Using Electronic Fuses

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Solution Overview

Problem

Current LED driver technologies face challenges in accurately setting output current levels, often relying on resistors, dip switches, software, or NFC, which may not ensure safety and stability, particularly in programmable light source applications.

Innovation Solution

A programmable light source output control device utilizing an inductive coupling device and electronic fuses, where a setting circuit detects output power levels and frequencies to program the fuses, generating actuating power for the light source, ensuring precise control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional methods (resistors, dip switches, software, NFC) are used to set output current, then the device complexity is reduced, but the reliability and precision of output current setting deteriorates

Engineering Contradiction:

Improveoutput current setting reliabilityVSAvoidcontrol circuit complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical setting methods (resistors, dip switches) with an electronic fuse-based programmable control system. The electronic fuses are programmed through inductive coupling, substituting mechanical configuration with electronic control that achieves both high reliability and precise output current setting.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an intermediary programming system using inductive coupling between an external programmer and the electronic fuses. This intermediary mechanism allows reliable and precise programming of output current settings without requiring complex direct control circuits within the LED driver itself.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If programmable electronic fuses are used for precise output control, then the manufacturing precision is improved, but the ease of manufacture deteriorates

Engineering Contradiction:

Improveoutput current precisionVSAvoiddevice assembly ease

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The electronic fuses are pre-programmed with specific output current values before being assembled into the LED driver. This preliminary programming action allows the fuses to be treated as standardized components with predetermined functions, simplifying the assembly process while maintaining high manufacturing precision.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The programming system uses self-service methodology where the electronic fuses are programmed through automated inductive coupling without requiring manual intervention. This self-programming capability simplifies the manufacturing process by eliminating complex manual configuration steps while achieving precise output current control.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If inductive coupling programming is implemented, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:

Improveprogramming flexibilityVSAvoidprogramming circuit complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent uses inductive coupling as an intermediary programming interface that provides high adaptability without requiring complex programming circuits within the device. The external programmer handles the complexity of communication and programming, while the device itself maintains a simple receive-and-store architecture.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex electrical programming interfaces with inductive coupling, which uses magnetic field communication. This substitution provides versatile programming capabilities while keeping the physical interface simple and isolated, reducing the complexity of programming circuits within the device.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This solution enables precise and adaptive control of light source output, enhancing safety and stability by detecting and responding to power levels and frequencies, thereby optimizing the actuating power supplied to the light source.

Implementation Method 1

an inductive coupling device configured to transmit power using inductive coupling

Methodology Applied

Scientific EffectInductive coupling: Electromagnetic Induction

Implementation Method 2

a power stage configured to receive external power, generate actuating power according to the external power and a state of each of the electronic fuses, and supply the actuating power to a light source

Methodology Applied

Scientific EffectPower conversion:

Data Source

PatentUS11765804B2Programmable light source output control device using electronic fuse, lighting device, and method of programming lighting device

Publication Date: 2023.09.19 3A LOGICS CO LTD

AI summary

Provided is a programmable light source output control device. A light source output control device includes electronic fuses, a power stage configured to receive external power, generate actuating power according to the external power and a state of each of the electronic fuses, and supply the actuating power to a light source, and a setting circuit configured to set the state of each of the electronic fuses.