E-Liquid Detection System Using Fluorescent and Capacitive Sensors
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Solution Overview
Problem
Electronic cigarettes and vaporization devices face issues with overheating or underheating due to unsuitable e-liquids, necessitating a system to verify the compatibility of e-liquids for safe operation.
Innovation Solution
An e-liquid detection system that uses fluorescent, capacitor, ultrasound, or pressure sensors to verify the suitability of e-liquids by detecting indicators or physical properties, preventing unauthorized refilling and determining the e-liquid level, which includes a light source and detector for fluorescent systems, conductive plates for capacitors, and sensors for ultrasound and pressure systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If e-liquid detection systems are implemented to verify compatibility, then device safety and reliability are improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical or manual verification methods with optical detection systems. The fluorescent detection system uses light sources and photodetectors to identify e-liquid composition, while the capacitor system uses electrical field interactions. These substitutions maintain high reliability in e-liquid verification while reducing mechanical complexity compared to manual testing or mechanical sensing approaches.
Solution Approach 2:
The patent utilizes changes in physical parameters of e-liquid (fluorescence properties, dielectric constant, density) to detect composition and level. By measuring these intrinsic parameters rather than using complex mechanical verification, the system achieves high reliability with relatively simple sensor implementations. The fluorescent detection measures optical parameter changes, while capacitor detection measures electrical parameter changes.
2Measurement precision
If multiple detection methods (fluorescent, capacitor, ultrasound, pressure) are used to verify e-liquid suitability, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent implements a multi-functional detection system where a single integrated platform can operate with different detection methods (fluorescent, capacitor, ultrasound, or pressure) depending on the specific application requirements. The system architecture allows one detection system to perform multiple functions: verifying e-liquid composition, measuring fill level, and ensuring compatibility. This universal approach achieves high measurement precision across different scenarios without requiring separate dedicated systems for each function.
Solution Approach 2:
The patent employs multiple physical parameters (fluorescence intensity, dielectric constant, acoustic impedance, pressure) to characterize e-liquid properties. Each parameter provides different information about e-liquid composition and state, and their combined measurement achieves comprehensive verification with high precision. The system can select appropriate parameters based on the specific detection needs, maintaining precision while managing complexity through parameter-based differentiation rather than hardware proliferation.
3Adaptability or versatility
If e-liquid level measurement is added to the detection system, then device functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The patent designs the detection system to perform dual functions: e-liquid composition verification and fill level measurement. The fluorescent detection system uses the same light source and detector to first verify e-liquid presence through fluorescence characteristics, then measure fill level through light intensity attenuation or path length variations. Similarly, the capacitor system verifies composition through dielectric properties and measures level through capacitance changes. This multi-functional approach enhances device versatility without requiring separate manufacturing processes for verification and level sensing.
Solution Approach 2:
The patent merges the e-liquid verification function and fill level measurement function into a single integrated detection system. Rather than manufacturing separate verification sensors and level sensors, the system combines both functions into one sensor assembly that performs both tasks using the same physical principles. This merging reduces manufacturing steps, component count, and assembly complexity while providing enhanced functionality.
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
Ensures safe operation by preventing the use of unsuitable e-liquids, maintaining device performance, and accurately determining the e-liquid level, thereby enhancing user safety and device reliability.
Implementation Method 1
The fluorescent e-liquid detection system has a light source and a light detector. The e-liquid contains at least one product indicator. The light source provides a first light that is absorbed by the product indicator, with the product indicator emitting a second light that is detected by the light detector.
Implementation Method 2
The capacitor e-liquid detection system comprises a first conductor and a second conductor. The first and second conductors are at least partially parallel to each other, and configured to form a capacitor circuit having a capacitance.
Implementation Method 3
An e-liquid detection system that uses fluorescent, capacitor, ultrasound, or pressure sensors to verify the suitability of e-liquids
Implementation Method 4
An e-liquid detection system that uses fluorescent, capacitor, ultrasound, or pressure sensors to verify the suitability of e-liquids
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3(a)~3(b)
AI summary
An electronic cigarette or similar vaporization devices include a liquid which is vaporized or atomized in an atomizer. An e-liquid detection system can verify that the e-liquid is acceptable for use in the device. The e-liquid detection system may detect one or more indicators, and/or physical or chemical properties of the e-liquid. The e-liquid detection system may also measure the e-liquid level in the device.