Mobile UV-C Disinfection Device with Human Exposure Detection
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Solution Overview
Problem
Current mobile UVGI devices pose risks to human eyes and skin due to lack of natural avoidance responses and potential for battery power inefficiency, as they lack mechanisms to optimize UV dosage delivery and power consumption.
Innovation Solution
A mobile device with UV-C light sources, processors, and a display that determines required UV dosage, calculates exposure time, illuminates the disinfection light, and displays a disinfection map to ensure effective germicidal application while minimizing battery consumption and preventing human exposure hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV-C light sources are used for disinfection, then germicidal effectiveness is improved, but harm to human eyes and skin increases
Solution Approach 1:
The system uses a camera to detect the presence of human eyes or skin in the disinfection path and provides feedback to the processor to stop or redirect the UV-C light emission, preventing harm while maintaining disinfection effectiveness
Solution Approach 2:
The system performs preliminary detection of potential human exposure risks before activating the UV-C light source, and takes preventive action by blocking or redirecting the light path to avoid eye and skin damage
2Reliability
If UV light emission time is extended to ensure required dosage, then disinfection effectiveness is improved, but battery power consumption increases
Solution Approach 1:
The system dynamically adjusts the UV-C light emission duration based on real-time detection results, extending exposure time only when necessary to achieve required dosage and shutting off when dosage is sufficient or human presence is detected, optimizing battery consumption
Solution Approach 2:
The system changes the emission time parameter adaptively, extending it when higher dosage is needed and reducing it when dosage requirements are met or safety risks are identified, thereby balancing disinfection effectiveness with power conservation
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 solution enables safe and efficient UVGI disinfection by determining and delivering the required UV dosage, minimizing battery power usage, and preventing potential human damage through intelligent exposure control and warning systems.
Implementation Method 1
Ultraviolet germicidal irradiation (UVGI) is a disinfection technique that uses UV-C light, which has a wavelength range of 200-280 nm, to kill or inactivate microorganisms. More specifically, UVGI destroys nucleic acids and disrupts DNA of microorganisms
Implementation Method 2
UV light sources, such as UV light emitting diodes (LEDs), have been used in various applications
Data Source
AI summary
The present invention relates to mobile devices for disinfecting an object. The mobile device includes: one or more light sources for generating a disinfection light; a display; one or more processors coupled to the one or more light sources and display; and a non-transitory computer-readable medium comprising one or more sequences of instructions which, when executed by the one or more processors, causes steps to be performed including: determining a required dosage of the disinfection light; determining an exposure time of the disinfection light that corresponds to the required dosage of the disinfection light; illuminating the disinfection light on the surface; and displaying a disinfection map on the display to report a result of a disinfection process performed by the illumination of the disinfection light.