Runway LED Synchronization via Power-On Delay Signal
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Solution Overview
Problem
Existing runway light systems require external control and infrastructure, leading to high costs and complexity, and often fail to meet regulatory standards for synchronization and operation without additional hardware and wiring.
Innovation Solution
A stand-alone synchronization method for LED runway lights that uses a power-on delay signal to reset counters and initialize toggle states within the light fixture, eliminating the need for external controllers and reducing infrastructure requirements by enabling self-synchronization of LED units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external control systems are used for runway lights, then synchronization and control functions are achieved, but costs and material usage increase
Solution Approach 1:
The runway light system performs synchronization and control functions autonomously using internal components (counter, toggle, LED driver) without requiring external control infrastructure. The light bar itself generates and responds to synchronization signals, eliminating the need for separate external controllers and reducing system complexity while maintaining reliable synchronization.
Solution Approach 2:
The control functionality is extracted from external systems and integrated directly into the runway light unit. The synchronization counter, toggle switch, and LED driver are incorporated within the light bar assembly, removing the need for external control devices and reducing overall system complexity and material requirements.
2Reliability
If external control infrastructure is installed, then synchronization is achieved, but installation and material costs increase
Solution Approach 1:
The control functions (counter, toggle, LED driver) are merged with the runway light bar into a single integrated unit. This combination eliminates the need for separate external control infrastructure, reducing both material requirements and installation complexity while maintaining reliable synchronization functionality.
Solution Approach 2:
The runway light bar serves multiple functions simultaneously: it provides illumination and contains the complete synchronization control system within itself. The integrated design allows the single unit to perform both lighting and self-synchronization tasks, eliminating the need for separate dedicated control devices and simplifying installation.
3Productivity
If LED units operate without power-on delay signal, then immediate operation is achieved, but synchronization issues occur
Solution Approach 1:
The power-on delay signal is generated immediately upon power application to preliminarily reset the counter and initialize the toggle before the LED units begin normal operation. This preliminary action ensures all units start from a known synchronized state, preventing synchronization issues while allowing immediate operational response once the delay period expires.
Solution Approach 2:
The power-on delay signal applies a preliminary resetting action to the counter and toggle initialization to prevent potential synchronization problems that could arise from undefined initial states. By preemptively establishing a known synchronized state before operation begins, the system avoids synchronization issues without significantly delaying operational response.
Data Source
AI summary
A method of providing synchronous control for a number of light-emitting diode (LED) units within a LED fixture is described herein. The method can include receiving an input signal. The method can also include sending, in response to receiving the input signal and for a period of time, a power-on delay signal to the LED units, wherein each LED unit includes a counter, a toggle, and a LED driver, where the power-on delay signal resets the counter, initializes the toggle, and disables the LED driver. The method can also include terminating, after the period of time, the power-on delay signal. A LED fixture and a LED unit within a fixture, having one or more components performing the aforementioned method, is also described herein.