Ozone Detector Sheet With UV Absorber
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Solution Overview
Problem
Conventional ozone detecting devices are expensive, limited by the need for pumps and optical systems, and struggle with outdoor measurements due to ultraviolet radiation, which causes false readings and limits their ability to accurately measure ozone concentrations in real environments.
Innovation Solution
An ozone detecting device incorporating a carrier made of fibers with a detector component containing a dye that changes color when reacting with ozone, along with an ultraviolet absorber having a hydrophilic group to absorb ultraviolet light, allowing for cumulative ozone measurement even under UV radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional ozone detecting devices use pumps and optical systems, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates the complex pump and optical system components from conventional ozone detectors, retaining only the essential chemical detection function through a simplified colorimetric method using detector tubes or sheets that directly react with ozone gas without requiring mechanical or optical subsystems
Solution Approach 2:
The invention employs disposable detector tubes and sheets that are inexpensive, single-use components containing the necessary reagents for ozone detection, replacing expensive and complex reusable instruments with affordable consumables that eliminate the need for maintenance and calibration systems
2Measurement precision
If conventional ozone detecting devices operate continuously with pumps and light sources, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The patent removes energy-consuming components such as pumps and continuous light sources from the detection system, relying instead on passive diffusion of ozone gas into detector tubes or sheets where chemical reactions occur spontaneously without external power input
Solution Approach 2:
The detection system operates autonomously without external power sources, using the natural chemical reactivity between ozone and the detector reagents to generate measurable color changes, eliminating the need for electric power while maintaining detection capability
3Difficulty of detecting and measuring
If detector components are exposed to ultraviolet light, then detection capability is improved, but measurement precision deteriorates due to false readings
Solution Approach 1:
The patent introduces an ultraviolet absorber as an intermediary substance that selectively absorbs harmful UV radiation before it reaches the detector component, while allowing ozone gas to diffuse through and react with the detector reagents, thus protecting the measurement system from UV interference
Solution Approach 2:
The detector assembly combines multiple materials with complementary functions: the detector tube or sheet containing the ozone-reactive reagent, and an outer layer or coating of ultraviolet absorber material, creating a composite structure that simultaneously enables ozone detection while blocking UV radiation to prevent false readings
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 device effectively detects cumulative ozone concentrations accurately, reducing the influence of ultraviolet light and enabling outdoor measurements, while being cost-effective and power-independent.
Implementation Method 1
a detector component carried by the carrier and containing a dye which changes a color when reacting with ozone gas
Implementation Method 2
an ultraviolet absorber carried by the carrier and having a hydrophilic group. The ultraviolet absorber carried together with the dye by the carrier absorbs ultraviolet light irradiating the carrier
Data Source
AI summary
A vessel (102) containing a detector solution (101) is prepared. The detector solution (101) is an aqueous solution prepared by dissolving a detector component containing a dye which changes its color when reacting with ozone gas, a humectant, and an ultraviolet absorber having a hydrophilic group. A prepared sheet-like carrier (103) is dipped in the detector solution (101) for, e.g., 30 sec, thereby forming an impregnated sheet (104) by impregnating the sheet-like carrier (103) with the detector solution (101). The impregnated sheet (104) is then dried by evaporating the solvent (medium) such as water contained in the impregnated sheet (104), thereby forming a sheet-like ozone detecting device (105).