Dual-Source Lighting Control for Occupancy-Based Power Switching

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Solution Overview

Problem

Conventional lighting devices required to be on 24/7/365 consume significant energy, as legal codes mandate illumination in structures like parking lots and staircases, leading to inefficient energy usage despite the need for optimal energy utilization.

Innovation Solution

A lighting device system comprising a first high-power LED segment and a second low-power fluorescent segment, activated based on motion detection using sensors and microprocessors, allowing for adaptive lighting levels to optimize energy usage while maintaining safety and compliance with legal requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional lighting devices are kept permanently on to comply with legal lighting requirements, then proper illumination is provided, but energy consumption increases significantly

Engineering Contradiction:

Improveillumination availabilityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The lighting device dynamically switches between different operating modes (first mode with first lighting source, second mode with second lighting source) based on detected conditions such as occupancy or ambient light levels, allowing the system to adapt its energy consumption to actual needs while maintaining compliance with illumination requirements

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters by switching between different lighting sources with different power consumption characteristics, adjusting the illumination provided based on detected environmental conditions or occupancy to optimize energy usage while maintaining adequate lighting

Inventive Principle:

Principle #35Parameter changes

2Illumination intensity

If high-power lighting sources are used to ensure adequate illumination, then proper brightness is provided, but energy consumption increases

Engineering Contradiction:

ImprovebrightnessVSAvoidenergy consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses the higher-power first lighting source only partially or selectively based on detected needs, switching to the lower-power second lighting source when full illumination is not required, thereby avoiding excessive energy consumption while maintaining adequate brightness when necessary

Inventive Principle:

Principle #16Partial or excessive action

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

The system reduces energy consumption by dynamically adjusting lighting levels based on occupancy and motion, ensuring safety and compliance with legal illumination standards while integrating seamlessly into existing fixtures without the need for rewiring or modifications.

Implementation Method 1

a motion sensor that determines motion of an occupant

Methodology Applied

Scientific EffectMotion detection:

Implementation Method 2

a first lighting source that activates with a high power and provides light with a high brightness

Methodology Applied

Scientific EffectLight emission from LED: Light Emitting Diode

Implementation Method 3

a second lighting source that activates with a low power and provides light with a low brightness

Methodology Applied

Scientific EffectFluorescence: Fluorescence

Data Source

PatentUS9642213B2Lighting device operating at different power levels

Publication Date: 2017.05.02 ASHOFF RICHARD D

AI summary

The current subject matter relates to a lighting device that can be installed in an already existing fixture in a structure. The lighting device can include a light emitting diode (LED) lighting segment and a fluorescent lighting segment. The LED lighting segment can include a LED lighting source, and the fluorescent lighting segment can include a fluorescent lighting source. The LED lighting source can be activated. Motion sensors and/or occupancy sensors can detect motion and/or occupancy of an occupant in the structure. If there is motion or if the occupancy is more than a predetermined threshold, the fluorescent lighting source can be activated. After each regular interval of time, the detection of motion or occupancy can be re-performed. If there is no detection of motion and/or occupancy, the fluorescent lighting source can be deactivated, after a period of time. Related apparatus, systems, techniques and articles are also described.