Movable UV Sterilization Unit With Multi-Lens Coverage Control
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Solution Overview
Problem
UV-C LED sterilization devices face performance degradation due to increased distance from the target and high-temperature environments, limiting their effectiveness in vehicles.
Innovation Solution
A UV sterilization device with a movable sterilization unit, driven by a motor, and a lens assembly with multiple lens types, allowing adjustment of radiation mode and distance to the target, along with temperature-controlled operation to prevent performance deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the sterilization unit is positioned far from the target to cover a larger area, then the coverage area is improved, but the sterilization effectiveness deteriorates due to increased distance
Solution Approach 1:
The sterilization unit is made movable along the optical axis through a driving mechanism, allowing dynamic adjustment of the distance between the UV emission unit and the target surface. This enables the system to optimize sterilization effectiveness by positioning closer when needed while maintaining coverage area through controlled movement patterns.
2Adaptability or versatility
If the UV-C LED operates in high-temperature environments, then the device can function in various vehicle conditions, but the sterilization performance deteriorates due to temperature effects
Solution Approach 1:
A temperature sensor detects the operating temperature of the UV-C LED, and this information is fed back to the control unit. The control unit adjusts the driving unit's operation or emission duty cycle based on temperature feedback, preventing performance deterioration while maintaining operational versatility across different vehicle conditions.
3Device complexity
If a single fixed-position UV emitter is used, then the device structure is simple, but the sterilization coverage and effectiveness are limited
Solution Approach 1:
The sterilization unit with UV emission units is made movable along the optical axis via a driving mechanism, allowing dynamic adjustment of emission distance. This enables enhanced sterilization effectiveness and adaptability to different target distances without significantly increasing overall device complexity.
Solution Approach 2:
The lens assembly includes multiple lenses with different focal lengths and radiation patterns, allowing a single device to perform multiple sterilization functions and adapt to different target types and distances, enhancing versatility without requiring multiple separate devices.
4Adaptability or versatility
If multiple lenses with different radiation modes are added, then the sterilization versatility is improved, but the device complexity increases
Solution Approach 1:
The lens assembly integrates multiple lenses with different focal lengths and radiation characteristics into a single modular unit. This allows the device to switch between different radiation modes (concentrated, dispersed, wide-angle) using one unified component, enhancing versatility while keeping the overall structure manageable through modular design.
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
Enhances sterilization performance and reliability by maintaining optimal distance and radiation mode selection and temperature-controlled operation, ensuring effective sterilization across various vehicle compartments.
Implementation Method 1
UV light includes UV-C light having a wavelength in the range of 200 to 280 nanometers (nm)... UV-C light-emitting diode (LED) products for eradicating the coronavirus have been developed
Implementation Method 2
a lens assembly including at least two different types of lenses, and provided on a front surface of the UV emission unit
Implementation Method 3
when UV-C light, which has a sterilization function, is radiated onto deoxyribonucleic acid (DNA), it destroys the DNA and suppresses the regeneration and replication thereof, thus eradicating viruses
Data Source
AI summary
The present disclosure relates to an ultraviolet (UV) sterilization device, and more specifically, to a UV sterilization device whose radiation mode and position may be changed. The UV sterilization device includes: a sterilization unit configured to be movable up to a specific position and including a UV emission unit; a driving unit configured to move the sterilization unit; and a lens assembly including at least two different types of lenses and provided on a front surface of the UV emission unit.