UV Dosimeter Integration in Portable Devices
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Solution Overview
Problem
Current devices lack effective methods to accurately measure and alert users about cumulative ultraviolet (UV) exposure, which is crucial for preventing health issues such as skin damage and cancer, as they do not account for time-dependent and location-specific UV index variations and user-specific skin sensitivity.
Innovation Solution
A UV dosimeter system integrated into personal electronic devices, utilizing UV light sensors and analyzers to detect exposure time and UV index, providing alerts and recommendations based on cumulative dose, with optional ambient light and skin sensitivity adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UV light sensors and analyzers are integrated into personal electronic devices to detect exposure time and UV index, then UV exposure measurement capability is improved, but device complexity increases
Solution Approach 1:
The patent integrates UV light sensors, analyzers, and processing circuits into a single unified dosimeter system within personal electronic devices. This merging of multiple functional components resolves the technical contradiction by combining measurement capabilities while managing complexity through integrated design, allowing accurate UV exposure detection without proportionally increasing device complexity.
Solution Approach 2:
The dosimeter system is designed to perform multiple functions including detecting UV exposure time, measuring UV index, calculating cumulative dose, and providing health risk assessments. This multi-functionality improves measurement precision by utilizing the same sensor infrastructure for various measurement tasks, thereby avoiding the need for separate dedicated systems for each function.
2Measurement precision
If time-dependent and location-specific UV index data are integrated with user-specific skin sensitivity factors, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces processing circuits and algorithms that act as intermediaries between raw sensor data, environmental UV index information, and user skin sensitivity factors. These intermediary components integrate multiple data sources and convert them into accurate cumulative dose calculations, resolving the contradiction by managing data integration complexity through structured processing layers.
Solution Approach 2:
The system replaces complex manual calculation methods with automated electronic processing circuits and software algorithms. This substitution resolves the technical contradiction by performing sophisticated data integration and dose calculation through electronic means, improving measurement precision while keeping device complexity manageable through programmable solutions rather than mechanical complexity.
3Reliability
If the system provides personalized protective measures and alerts, then user safety is improved, but ease of operation decreases
Solution Approach 1:
The dosimeter system automatically performs UV exposure monitoring, dose calculation, and generates personalized protective recommendations without requiring active user intervention. This self-service approach improves user safety through continuous automated monitoring while maintaining ease of operation by eliminating the need for users to manually input data or interpret complex measurements.
Solution Approach 2:
The system provides real-time feedback to users through alerts and recommendations based on measured UV exposure levels and calculated cumulative doses. This feedback mechanism improves user safety by informing users of their exposure status and suggesting protective measures, while maintaining ease of operation through automatic generation and delivery of personalized guidance without requiring complex user interaction.
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 system effectively quantifies and alerts users to UV exposure risks, offering personalized protective measures by integrating time-dependent and location-specific UV index data with user-specific skin sensitivity factors, enhancing user safety.
Implementation Method 1
a plurality of ultraviolet light sensors, each ultraviolet light sensor configured to measure an exposure of UV radiation and generate a signal indicative of the UV exposure
Data Source
AI summary
A UV dosimeter function is provided in a portable multifunction device. The device utilizes a UV light sensor to detect the user's presence while outdoors and measure the cumulative outdoor exposure time. The cumulative UV exposure is optionally provided via a messaging service or alert, and a UV index value is optionally utilized with the cumulative outdoor exposure to determine the risk of skin damage and to provide user guidance relating to recommended protective measures. An ambient light sensor is optionally provided and is used to augment the UV light thresholds used to determine the light exposure state.