Cellulose Film Diffraction Sensing for Humidity and Temperature Monitoring
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Solution Overview
Problem
Cellulose-based films used in various applications are susceptible to adverse conditions that can go undetected, affecting their quality and reliability, as existing methods lack effective means to monitor modifications such as humidity, temperature, and light exposure.
Innovation Solution
An apparatus utilizing cellulose-based materials with different diffraction responses to sense modifications, forming output light patterns that characterize changes in the materials' properties, allowing for the detection of physical quantities like temperature and humidity through diffraction grating patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cellulose-based films are used in applications exposed to various conditions, then the films can be utilized in diverse environments, but the films become susceptible to undetected adverse effects from humidity, temperature, and light exposure
Solution Approach 1:
The patent applies color change principles by utilizing diffraction grating patterns that produce visible output light patterns. When cellulose-based material parts are exposed to adverse conditions (humidity, temperature, light), their diffraction responses change, causing observable changes in the output light patterns. This allows visual or instrumental detection of condition exposure, transforming invisible degradation into detectable optical signals that indicate quality changes.
Solution Approach 2:
The patent implements feedback by creating a sensing system where the cellulose-based material parts continuously provide information about their exposure conditions through their diffraction responses. The apparatus captures output light patterns and determines readings that feedback about the current state of the material, enabling real-time monitoring of quality parameters such as humidity, temperature, and light exposure levels.
2Device complexity
If existing methods are used without modification, then the process is simple, but detection of modifications such as humidity, temperature, and light exposure is not effective
Solution Approach 1:
The patent introduces an intermediary sensing mechanism by incorporating cellulose-based material parts with diffraction gratings as mediators between the adverse conditions and the detection system. These material parts act as intermediaries that translate physical conditions (humidity, temperature, light) into optical signals (diffraction responses and output light patterns) that can be easily captured and measured by the apparatus, thereby enabling effective detection without complex direct measurement methods.
3Measurement precision
If multiple cellulose-based material parts of different materials are used to sense modifications, then accurate monitoring of physical quantities is achieved, but the device complexity increases
Solution Approach 1:
The patent applies composite material principles by combining multiple cellulose-based material parts made from different cellulose-based materials, each with distinct diffraction responses. These composite sensing elements work together to provide complementary information about various physical quantities. The apparatus processes the combined output light patterns from these different materials to achieve accurate, multi-parameter measurement of humidity, temperature, and light exposure simultaneously.
Solution Approach 2:
The patent implements multi-functionality by designing the apparatus to simultaneously measure multiple physical quantities (humidity, temperature, light exposure) using the same basic sensing mechanism. The different cellulose-based material parts each respond to various conditions, and the apparatus integrates their responses to provide comprehensive environmental monitoring through a single unified system, achieving multiple measurement functions without requiring separate dedicated devices for each parameter.
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 monitoring of modifications in cellulose-based materials, improving product quality by quantifying changes in humidity, temperature, and light exposure, ensuring reliable performance across applications.
Implementation Method 1
a first cellulose-based material part for forming a first diffraction response and a second cellulose-based material part for forming a second diffraction response
Data Source
AI summary
There is provided detecting modification of optically active cellulose-based film. A method comprises controlling, by a processor, an optical position sensor device to capture data from a first diffraction response formed based on at least one modification of a first cellulose-based material part and a second diffraction response formed based on the at least one modification of a second cellulose-based material part; and determining, by the processor, a reading indicating the at least one modification based on the captured data.