Universal LED Driver Current Adjustment via Microprocessor Parameter Overwriting

Solution Overview

Problem

The existing LED lighting fixtures require multiple drivers with different power specifications, leading to increased development costs and time due to the need for various manufacturing setups to meet diverse illuminance requirements.

Innovation Solution

A current adjustment apparatus for LED lighting fixtures, comprising a communication interface, a current generating module with a microprocessor, memory, and a current adjustment module, which allows for adjustable driving current generation based on stored parameters or setting signals, enabling the same apparatus to be used across different power specifications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple LED drivers with different power specifications are manufactured to meet diverse illuminance requirements, then the lighting fixture can satisfy different power specifications, but the development cost and time increase significantly

Engineering Contradiction:

Improvepower specification adaptabilityVSAvoiddevelopment time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent implements a universal LED driver design where a single driver circuit can operate with different LED strings having different power specifications. The driver includes a microprocessor that can be programmed with different driving parameters to accommodate various illuminance requirements, eliminating the need to manufacture multiple specialized drivers for different power specifications.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent changes the operating parameters of the LED driver through software configuration rather than hardware redesign. The microprocessor stores multiple sets of driving parameters corresponding to different power specifications, and can switch between them by loading different parameter sets, thereby adapting to diverse illuminance requirements without increasing development time.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple LED drivers with different power specifications are manufactured to meet diverse illuminance requirements, then the lighting fixture can satisfy different power specifications, but the manufacturing complexity and cost increase

Engineering Contradiction:

Improvepower specification adaptabilityVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal LED driver design where a single driver circuit can operate with different LED strings having different power specifications. The driver includes a microprocessor that can be programmed with different driving parameters to accommodate various illuminance requirements, eliminating the need to manufacture multiple specialized drivers for different power specifications.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent uses software parameter sets as copies of driving configurations stored in the microprocessor. Instead of creating physically different drivers for each power specification, the system creates virtual copies of driving parameters that can be loaded into the same hardware platform, significantly reducing manufacturing complexity.

Inventive Principle:

Principle #26Copying

3Loss of time

If a single LED driver is designed to accommodate different power specifications through parameter adjustment, then the development cost and time are reduced, but the control complexity increases

Engineering Contradiction:

Improvedevelopment timeVSAvoidcontrol complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The patent implements a self-service control mechanism where the microprocessor automatically selects and applies the appropriate driving parameters based on the detected LED string configuration. The system includes automatic detection circuits that identify the connected LED string's power specification and autonomously load the corresponding parameter set, eliminating the need for manual intervention and reducing control complexity despite the multi-functional capability.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS9844110B1Current adjustment apparatus for LED lighting fixture

Publication Date: 2017.12.12 CHICONY POWER TECH CO LTD

AI summary

The current adjustment apparatus includes a communication interface, a current generating module, and a current adjustment module. The current generating module includes a microprocessor, a memory for storing a current setting parameter, and a current generating unit; the memory and the current generating unit are electrically connected to the microprocessor. When the current adjustment module is not physically connected to the current generating module, the microprocessor makes the current generating unit generate a driving current in response to the current setting parameter; when the current adjustment module is physically connected to the current generating module via the communication interface, the microprocessor makes the current generating unit generate the driving current in accordance with a setting signal from the current adjustment module, and the microprocessor further overwrites the current setting parameter in accordance with the setting signal when receives a writing signal.