Bio sensor and air cleaner having same
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Solution Overview
Problem
Current indoor air quality measurement methods for bioaerosols are time-consuming and not integrated with air-cleaning systems, lacking real-time monitoring capabilities.
Innovation Solution
A biosensor using ultraviolet light sensors to detect scattered light from bioaerosols, combined with a scattered light sensor for dust particles, integrated with an air cleaner that adjusts operations based on detected signals to measure bioaerosol and dust concentrations in real time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional air sampling and culturing methods are used to measure bioaerosol concentration, then measurement accuracy is improved, but measurement time increases significantly
Solution Approach 1:
The patent replaces the mechanical/biological culturing system with an optical detection system. Instead of drawing air through Petri dishes and waiting for bacterial growth (mechanical/biological process), the system uses a light source to illuminate air samples and detectors to measure scattered light intensity, which correlates with bioaerosol concentration. This substitution enables real-time measurement while maintaining accuracy.
Solution Approach 2:
The patent changes the measurement parameter from biological growth (requiring days) to optical properties (scattered light intensity). By measuring the intensity of light scattered by bioaerosols in real-time, the system transforms a time-consuming biological process into an instantaneous optical measurement, resolving the contradiction between accuracy and time.
2Measurement precision
If traditional air quality measurement methods are used, then measurement accuracy is improved, but integration with air-cleaning systems deteriorates
Solution Approach 1:
The patent replaces complex biological measurement systems with a simple optical detection system that provides immediate electrical signals. This substitution makes the measurement system easily integrable with air-cleaning systems, as the real-time data can directly control air purifiers, HEPA filters, or sterilization devices without requiring complex interfacing or delayed responses.
Solution Approach 2:
The optical detection system serves multiple functions: it measures bioaerosol concentration, provides real-time data for air quality monitoring, and enables integration with various air-cleaning devices. This multi-functionality enhances adaptability and versatility, allowing the same measurement system to work with different types of air purification technologies.
3Productivity
If optical sensors detecting scattered light are used, then real-time measurement capability is improved, but ability to distinguish bioaerosols from dust particles deteriorates
Solution Approach 1:
The patent applies local quality by using different detection methods for different types of particles. For bioaerosols, it uses ultraviolet light scattering detection, while for dust particles, it uses visible light scattering detection. This localized approach to detection methodology enables the system to distinguish between particle types while maintaining real-time measurement capability.
Solution Approach 2:
The patent changes the wavelength parameter of the light source to differentiate between particle types. By using ultraviolet light for bioaerosol detection and visible light for dust particle detection, the system exploits the different optical properties of these particles at different wavelengths, enabling simultaneous real-time measurement with high specificity.
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 real-time measurement of indoor bioaerosol concentrations and optimized air cleaner operation, improving indoor air quality by controlling sterilization, air intake, and humidity levels based on sensor data.
Implementation Method 1
an optical sensing method of sensing ultraviolet light scattered by bioaerosols
Implementation Method 2
light emitting devices irradiate light in the air flowing in a space
Implementation Method 3
The ultraviolet light sensor may convert a quantity of the detected ultraviolet light into an electrical signal
Implementation Method 4
a scattered light sensor detecting scattered light, from light irradiated by the light irradiator, reflected from dust particles
Data Source
AI summary
There is provided a biosensor, which may measure the concentration of indoor bioaerosols through an optical sensing method of sensing ultraviolet light scattered by bioacrosols, and an air cleaner having the same. The biosensor includes a light irradiator and an ultraviolet light sensor detecting scattered ultraviolet light, from light irradiated by the light irradiator, reflected from bioaerosols. The biosensor may measure the concentration of indoor bioaerosols through the optical sensing method in real time, using a certain wavelength of ultraviolet light scattered by bioaerosols, and may allow the air cleaner to be operated under proper conditions based on a measured concentration of bioaerosols and a measured concentration of dust particles.