LED Lighting Unit Optical Signal Output for Emergency Bus Address Verification
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Solution Overview
Problem
In lighting systems, particularly emergency lighting devices distributed across large areas, identifying the assigned bus addresses of connected devices is laborious and time-consuming, as operators must physically verify address assignments, which is inefficient and cumbersome.
Innovation Solution
Utilizing a subset of LEDs in the LED light source to display operating parameters through flashing, where red and green LEDs indicate self-test results, eliminating the need for additional optical and/or acoustic signal transmitters, and allowing for binary, decimal, or Morse code transmission of information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional optical and/or acoustic signaling devices are provided to display bus address, then the reliability of address verification is improved, but the device complexity increases
Solution Approach 1:
The LED light source is designed to perform dual functions: providing illumination and displaying operating parameters including bus address through color-coded LED patterns. By making the LED system universal, the patent eliminates the need for separate signaling devices, thereby reducing device complexity while maintaining reliable address verification capability.
2Measurement precision
If operators physically verify address assignments at each bus participant, then the measurement precision of address assignment is improved, but the loss of time increases
Solution Approach 1:
The system performs self-identification by automatically displaying the bus address and operating parameters on the LED light source itself. This self-service mechanism eliminates the need for operators to manually check address labels on each device, significantly reducing verification time while maintaining precise address identification through clear visual display.
Solution Approach 2:
The patent uses color-coded LED patterns to display different operating parameters, including bus address information. By encoding address verification information in color changes and flashing patterns of LEDs, the system enables rapid visual verification without physical inspection, reducing time loss while maintaining measurement precision.
3Ease of operation
If LED light source is used for optical signal output, then the ease of operation is improved, but the loss of energy increases
Solution Approach 1:
The patent employs periodic flashing patterns of LEDs to convey information, rather than continuous illumination. This periodic action allows the LED light source to display operating parameters and bus address information while minimizing energy consumption, as the LEDs are activated only during specific time intervals required for signal transmission.
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
Enables quick and reliable visual display of operating parameters without additional signal transmitters, enhancing efficiency in assigning and verifying addresses within lighting systems, especially in distributed emergency lighting setups.
Implementation Method 1
an LED light source (4) having a first light source group (4a) of LEDs designed to emit red light, a second light source group (4b) of LEDs designed to emit blue light and a third light source group (4c) of LEDs designed to emit green light
Data Source
Figure 1
AI summary
The invention relates to a lighting assembly, comprising an operating device (3) and an LED light source (4) controlled by said device, the LED light source being made up of at least two LEDs (4a, 4b, 4c), which each emit light of a different color and together give off white total light. The operating device (3) controls a partial quantity of the LEDs (4a, 4b, 4c) making up the LED light source (4) intended to give off single-color (non-white) light such that said LEDs output light signals representing particular operating parameters.