LED Lamp String Sequencing for Accurate Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light emitting diode (LED) lamp string systems fail to accurately detect and replace damaged LEDs, leading to incorrect lighting patterns when new LEDs are added with different address codes, requiring users to purchase entire new strings instead of just replacing the faulty unit.
Innovation Solution
The system employs a sequencing method with predetermined and extended sequence testing modes to detect consumed currents, identifying failure and replacement address codes, allowing the driving apparatus to update the address codes in the testing sequence, ensuring correct operation of new LEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If users replace damaged LEDs with new LEDs having different address codes, then the new LEDs can be physically installed, but the lighting pattern becomes incorrect because the driving apparatus cannot identify the new LEDs
Solution Approach 1:
The driving apparatus actively queries each LED position with sequential address codes and detects the consumed current to receive feedback about which positions are occupied. This feedback mechanism allows the system to automatically update its address code mapping when LEDs are replaced, maintaining lighting pattern accuracy without requiring manual reconfiguration.
Solution Approach 2:
The system changes the parameter being monitored from fixed address code matching to dynamic current consumption detection. By measuring whether current is consumed at each queried address code position, the system adapts to physical changes in the LED string (additions, removals, replacements) and automatically adjusts the lighting pattern accordingly.
2Device complexity
If the system uses fixed address codes for each LED position, then the lighting control is simple and direct, but the system cannot adapt when LEDs are added, removed, or replaced
Solution Approach 1:
The driving apparatus performs a preliminary detection routine when power is first applied or when triggered by a control signal. During this preliminary action, it sequentially queries all possible LED positions and builds a map of actual LED locations before entering normal operation mode, allowing the system to adapt to any configuration without requiring manual setup.
Solution Approach 2:
The system performs self-detection and self-configuration automatically upon power-up or trigger. The driving apparatus independently identifies which LED positions are occupied by measuring current consumption at each address code position, eliminating the need for manual configuration or programming of address codes when the LED string is assembled or modified.
3Quantity of substance
If the driving apparatus sends driving lighting signals to all LED positions, then all LEDs receive the signal, but only LEDs with matching address codes light correctly, making it impossible to drive specific replaced LEDs
Solution Approach 1:
The driving apparatus performs an excessive action by sequentially querying all possible LED positions (01, 02, 03, ...) even though not all positions may be occupied. By sending test signals to all positions and measuring current consumption, it identifies which positions are actually occupied, then uses this information to precisely control only the existing LEDs in normal operation, achieving both full coverage and precise individual control.
Data Source
AI summary
A light emitting diode lamp string system with a sequencing function includes a light emitting diode driving apparatus and a light emitting diode lamp string. In a predetermined sequence testing mode, the light emitting diode driving apparatus sequentially sends a plurality of predetermined sequence testing signals to the light emitting diode lamp string to find out the damaged light emitting diode lamp. In an extended sequence testing mode, the light emitting diode driving apparatus respectively sends a plurality of extended sequence testing signals to the light emitting diode lamp string to find out the new light emitting diode lamp. A sequencing method performs a predetermined sequence testing mode to detect a failure address code, and performs an extended sequence testing mode to detect a replacement address code, and replaces the failure address code with the replacement address code in a testing sequence.