Cigarette Leaf Composition Analysis With NIR-Thermal Fusion Mapping
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Solution Overview
Problem
Current methods for analyzing the composition of tobacco leaf groups are complex, subjective, and lack objective data, making it difficult to accurately represent the smoking quality of tobacco leaves.
Innovation Solution
A method using fusion mapping that combines near-infrared spectra and thermal analysis maps to create a difference correlation model, allowing for the objective analysis and characterization of tobacco leaf quality and composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual selection and sensory evaluation are used to design tobacco leaf formulas, then expert experience can be utilized, but the analysis is highly subjective and the conclusions are vague
Solution Approach 1:
The patent replaces manual sensory evaluation and mechanical mixing methods with near-infrared spectroscopy and thermogravimetric analysis instruments. These instruments objectively measure tobacco composition without human subjectivity, transforming qualitative sensory judgment into quantitative spectral and thermal data that can be precisely analyzed.
Solution Approach 2:
The patent combines two different analytical approaches - near-infrared spectroscopy (for chemical composition) and thermogravimetric analysis (for thermal properties and moisture content) - into a fusion mapping system. This composite analytical method integrates multiple data sources to achieve more comprehensive and accurate tobacco formula analysis than either method alone.
2Productivity
If near-infrared technology is used for tobacco quality analysis, then fast and efficient quality information can be obtained, but it only considers static conditions and cannot represent smoking quality under burning conditions
Solution Approach 1:
The patent merges near-infrared spectroscopy (which provides rapid chemical composition data) with thermogravimetric analysis (which provides thermal decomposition and burning behavior data). This combination allows the system to maintain fast analysis speed while also capturing smoking quality characteristics under burning conditions, as TG/DTA directly measures mass changes during heating that simulate combustion.
3Measurement precision
If thermogravimetric analysis is used to study tobacco pyrolysis, then stable reaction conditions and quantitative mass change data can be obtained, but it requires programmed temperature conditions and specialized equipment
Solution Approach 1:
The patent makes the thermogravimetric analysis system serve multiple functions: it not only measures mass change during pyrolysis but also provides derivative thermogravimetric curves for reaction rate analysis, identifies characteristic temperatures (initial reaction, maximum rate, termination), and when fused with NIR data, enables comprehensive tobacco formula analysis. This multi-functionality justifies the specialized equipment requirement.
4Quantity of substance
If chemical composition analysis and flue gas analysis are combined for tobacco leaf group analysis, then comprehensive chemical data can be obtained, but the analysis is highly intensive and the conclusions remain vague
Solution Approach 1:
The patent replaces intensive wet chemical analysis methods with near-infrared spectroscopy, which is a non-destructive, rapid analytical technique. NIR spectroscopy provides comprehensive chemical composition information (moisture, protein, sugar, ash, oil content) without the time-consuming sample preparation and multiple chemical assays required by traditional methods, thereby dramatically improving analysis efficiency while maintaining data completeness.
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
This method enables efficient and objective analysis of tobacco leaf group compositions, reducing the workload and reliance on subjective evaluations, and providing clear, reproducible results.
Implementation Method 1
near infrared (NIR) technology has been widely used in tobacco quality analysis and evaluation
Implementation Method 2
Thermogravimetric analysis (TG/DTA) can provide stable reaction conditions under programmed temperature conditions
Implementation Method 3
Derivative thermogravimetric methodology, also called the derivative thermogravimetric method, is derived from thermogravimetric analysis, and is a technique to record the first derivative of a TG curve with respect to temperature or time
Data Source
AI summary
The invention concerns a method for analyzing cigarette leaf components based on fusion mapping, including the following steps: (1) Preparation of a cigarette sample to be analyzed and single-grade tobacco leaf samples; (2) Construction of a fusion map for the cigarette sample to be analyzed and the single-grade tobacco leaf samples; (3) Analysis of the fusion map to obtain the composition and proportion of the tobacco leaves in the cigarette to be analyzed. The method can complete the analysis of the composition of finished cigarettes in a few minutes, and can obtain a clear formula composition and proportion values. It is objective, efficient, highly sensitive, and has good repeatability. It has unique advantages in the analysis of finished cigarette compositions in the tobacco industry.