Portable Electroluminescent Gauge Illumination
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Solution Overview
Problem
Industrial and medical diagnostic gauges face challenges in providing accurate readings in dim or dark environments without increasing size, cost, or reducing portability, as existing solutions rely on external light sources or complex electronics.
Innovation Solution
A compact, internally illuminated mechanical/analog diagnostic gauge with an electroluminescent panel powered by an internal battery, allowing for visibility in low light conditions without external sources, and featuring interchangeable measurement panels and overlays for different scales.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If external light sources are used to illuminate the gauge, then visibility in dark environments is improved, but device complexity and cost increase due to additional wiring and equipment
Solution Approach 1:
The patent combines the illumination function directly into the gauge housing by integrating an LED light source and diffuser within the existing structure. This merges the lighting system with the gauge display, eliminating the need for separate external light sources and their associated wiring, thereby improving visibility without increasing device complexity
Solution Approach 2:
The gauge is designed to illuminate itself using an integrated LED light source that is powered by the same battery that powers the gauge's electronic components. The self-illuminating capability allows the gauge to provide its own lighting without requiring external power sources or additional wiring infrastructure
2Illumination intensity
If luminescent materials are used to construct the gauge face, then visibility in ambient light is improved, but portability is reduced due to the need for external ambient light sources to charge the material
Solution Approach 1:
The gauge uses an active LED illumination system that generates light electrically rather than relying on luminescent materials that require prior charging from ambient light. This self-powered lighting approach maintains portability by eliminating the need for external light sources while providing consistent visibility
Solution Approach 2:
The patent replaces passive luminescent materials with an active electroluminescent LED system. Instead of using materials that absorb and store light energy mechanically, the system uses electrical energy to generate light directly, providing more reliable and portable illumination
3Measurement precision
If contrasting colors are used in the dial construction, then readability in light conditions is improved, but effectiveness in no light conditions is lost as contrasting colors require light to be seen
Solution Approach 1:
The patent combines high-contrast dial markings with integrated LED illumination and a light-diffusing lens. The contrasting colors provide readability in ambient light, while the integrated lighting system activates in dark conditions to illuminate the entire dial assembly, ensuring reading accuracy across all lighting environments
Solution Approach 2:
The gauge employs high-contrast color schemes on the dial face that are optimized for visibility. When paired with the LED illumination system, these contrasting colors become highly visible in dark environments as the LED light enhances the perceived contrast between the markings and the dial background
4Ease of operation
If the gauge is made compact for portability, then ease of replacement and portability are improved, but space for external light sources is reduced
Solution Approach 1:
The illumination function is extracted from external light sources and integrated directly into the compact gauge housing. By incorporating a small LED and diffuser assembly within the existing gauge structure, the design maintains compact dimensions while providing sufficient illumination for dark environment readability
Solution Approach 2:
The LED light source and diffuser lens are nested within the existing gauge housing structure. The illumination components are positioned in available spaces within the compact gauge assembly, allowing the lighting system to be integrated without increasing the overall gauge footprint
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 accurate and portable measurement readings in low light environments with minimal battery drain, reducing the risk of inaccurate measurements and facilitating maintenance, while maintaining cost-effectiveness and adaptability.
Implementation Method 1
an internal battery powered electroluminescent panel that internally illuminates the measurement display
Data Source
AI summary
A self contained internally illuminated diagnostic gauge used to display the magnitude of physically measured quantities in low or no light areas. The diagnostic gauge uses mechanical gauge needles to indicate the magnitude of the measurements on a dial. The dial is illuminated internally with a thin and flexible electroluminescent panel layer. This electroluminescent layer emits photons of light in response to a applied electrical energy. The electrical energy is supplied from a small battery system and driven through electronic circuitry both of which are contained inside of the gauge shell housing unit. The gauge shell has a removable battery cover that enables access to the power supply and the electronic drive circuitry of the device.