Graphite Foam Infrared Emitter for Aviation Signal Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The advent of LED lights has reduced the infrared signal detectable by aircraft infrared imagers, as they generate less heat, necessitating a method to enhance infrared signal generation in wavelengths between 760 nm to 2000 nm for improved aviation safety in inclement weather.
Innovation Solution
A magneto-energy apparatus using a graphite foam conductor within a time-varying electromagnetic field to induce an electric current, heating the graphite foam and converting energy into visible or infrared light, with a thermal conductivity exceeding that of copper, to efficiently generate infrared signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED lights are used, then energy efficiency is improved, but infrared signal generation deteriorates
Solution Approach 1:
The patent introduces graphite foam as an intermediary material between the LED light source and the infrared detector. The graphite foam absorbs optical energy from LEDs across a broad spectrum and converts it to thermal energy, which then emits infrared radiation. This mediator enables infrared signal generation without requiring the LED itself to generate heat, thus maintaining LED energy efficiency while achieving the desired infrared output.
Solution Approach 2:
The patent replaces the traditional incandescent bulb heating mechanism with an optical-to-thermal energy conversion system using graphite foam. Instead of directly heating a filament to produce infrared radiation, the system uses LED optical output to induce eddy currents in the graphite foam, which then self-heats and emits infrared. This substitution maintains the energy efficiency of LEDs while achieving infrared generation through a different physical mechanism.
2Object-generated harmful factors
If incandescent bulbs are used, then infrared signal generation is improved, but energy efficiency deteriorates
Solution Approach 1:
The graphite foam acts as an intermediary that decouples the infrared generation function from the primary light source. Rather than relying on an inefficient incandescent bulb to directly generate both light and heat, the system uses an efficient LED as the primary source and transfers its optical energy to the graphite foam intermediary, which then generates the infrared signal. This separates the energy-efficient lighting function from the infrared generation function.
Solution Approach 2:
The patent changes the physical state and energy conversion parameters of the graphite foam by exposing it to time-varying electromagnetic fields from the LED. This induces eddy currents that rapidly heat the graphite foam to temperatures where it emits strong infrared radiation. The parameter change from ambient temperature to high temperature in the graphite foam enables efficient infrared generation without requiring the entire lighting system to operate at high temperature like an incandescent bulb.
3Object-generated harmful factors
If graphite foam is heated rapidly, then infrared light production is improved, but energy loss increases
Solution Approach 1:
The patent employs periodic or pulsed electromagnetic field application to the graphite foam rather than continuous heating. By using LED drivers that can modulate the output and applying periodic excitation, the system heats the graphite foam only when needed for infrared signal generation. This periodic action reduces cumulative energy loss while maintaining effective infrared production during active periods.
Solution Approach 2:
The graphite foam maintains thermal energy continuously once heated, and its high thermal conductivity allows it to distribute and retain heat efficiently. The system maintains the graphite foam in a state where it can continuously emit infrared radiation as long as energy is supplied, maximizing the useful action period and reducing the frequency of re-heating cycles, thereby minimizing energy loss.
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 apparatus efficiently converts electricity to heat, achieving high thermal conductivity and rapid heating of graphite foam to produce infrared light, effectively enhancing infrared signal detection in aviation applications, particularly in poor weather conditions.
Implementation Method 1
The graphite foam when exposed to the time-varying electromagnetic field conducts an induced electric current
Implementation Method 2
the electric current heating the graphite foam
Implementation Method 3
The graphite foam when exposed to the time-varying electromagnetic field conducts an induced electric current, the electric current heating the graphite foam to produce light
Data Source
AI summary
A magneto-energy apparatus includes an electromagnetic field source for generating a time-varying electromagnetic field. A graphite foam conductor is disposed within the electromagnetic field. The graphite foam when exposed to the time-varying electromagnetic field conducts an induced electric current, the electric current heating the graphite foam to produce light. An energy conversion device utilizes light energy from the heated graphite foam to perform a light energy consuming function. A device for producing light and a method of converting energy are also disclosed.