LED Light Tube With Sensor For Fluorescent Fixture Automation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Smart building technologies that automatically control lighting are typically expensive and not compatible with standard building fixtures, requiring professional installation and lacking cost-effective solutions for monitoring LED efficiency.
Innovation Solution
An LED-based light tube for use in conventional fluorescent fixtures, equipped with a sensor to detect brightness levels and a controller to adjust LED power in response, along with a system to measure and estimate LED efficiency, allowing for automatic brightness adjustment and alerting when efficiency drops below a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If LED-based lights with sensors and controllers are installed to automatically control lighting, then lighting control automation is improved, but device complexity and installation cost increase
Solution Approach 1:
The LED light tube integrates multiple functions into a single device: it provides lighting through LEDs, detects ambient light levels through a sensor, controls LED brightness through a controller, and monitors its own efficiency. This multi-functionality eliminates the need for separate automation devices, reducing overall system complexity while maintaining high automation capability.
Solution Approach 2:
The LED light tube autonomously monitors its own efficiency by comparing expected vs. actual light output, automatically adjusts its brightness based on sensor input without external control, and provides self-diagnostics. This self-service capability reduces the need for external monitoring systems and manual intervention, achieving automation without proportional increases in system complexity.
2Ease of operation
If LED-based lights compatible with conventional fluorescent fixtures are used, then ease of installation is improved, but manufacturing cost increases
Solution Approach 1:
The LED light tube is designed with universal compatibility features including standard fluorescent fixture mounting interfaces and electrical connections. This allows the device to replace conventional fluorescent lights in existing fixtures without requiring specialized installation infrastructure, improving ease of installation while the integrated sensor and controller components are manufactured as standard parts to control cost increases.
Solution Approach 2:
The LED light tube serves as an intermediary device that bridges between conventional fluorescent fixture infrastructure and smart LED technology. By maintaining compatibility with existing electrical and mechanical interfaces while incorporating intelligent control capabilities, it enables upgrade paths that minimize installation complexity and infrastructure costs.
3Measurement precision
If multiple measurements of luminosity over time are performed to determine LED aging, then measurement precision is improved, but use of energy increases
Solution Approach 1:
Instead of continuous monitoring, the system performs luminosity measurements at periodic intervals to assess LED aging. The controller compares light output at these discrete time points against expected performance curves, achieving sufficient measurement precision for determining when replacement is needed while minimizing energy consumption associated with monitoring operations.
Solution Approach 2:
The system performs measurements only to the extent necessary for determining LED replacement timing, rather than exhaustive continuous monitoring. By sampling luminosity at strategic intervals and comparing against predetermined performance thresholds, it achieves adequate measurement precision for maintenance scheduling while keeping energy consumption minimal.
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 the transformation of standard buildings into smart environments at a lower cost by automatically controlling lighting and monitoring LED efficiency, reducing energy consumption and the need for manual intervention.
Implementation Method 1
a sensor operable to detect a brightness level and output a corresponding signal
Implementation Method 2
at least one LED arranged to produce light in a direction toward the light transmitting portion
Data Source
Figure 1~3
Figure 4
AI summary
An LED-based light tube for use in a conventional fluorescent fixture can feature a housing including a light transmitting portion. At least one electrical connector can be attached to the housing and configured for engagement with the conventional fluorescent fixture. At least one LED can be arranged to produce light in a direction toward the light transmitting portion. A sensor can be operable to detect a brightness level and output a corresponding signal. A controller can be in electrical communication with the at least one electrical connector and operable to control the at least one LED in response to the signal.