UV dosimetry and exposure alert
First Claim
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1. An electronic device, comprising:
- 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, the plurality of ultraviolet light sensors located at a plurality of locations along the device; and
an analyzer configured to;
receive signals from the plurality of ultraviolet light sensors,determine a total exposure time using the signals, the determination including;
identify a start time point when the signals from the plurality of ultraviolet light sensors meet or exceed a first threshold, andidentify an end time point when the signals from the plurality of ultraviolet light sensors drop below a second threshold,determine a time dependent ultraviolet index information, anddetermine a total dose using the total exposure time and the ultraviolet index information.
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Abstract
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.
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Citations
20 Claims
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1. An electronic device, comprising:
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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, the plurality of ultraviolet light sensors located at a plurality of locations along the device; and an analyzer configured to; receive signals from the plurality of ultraviolet light sensors, determine a total exposure time using the signals, the determination including; identify a start time point when the signals from the plurality of ultraviolet light sensors meet or exceed a first threshold, and identify an end time point when the signals from the plurality of ultraviolet light sensors drop below a second threshold, determine a time dependent ultraviolet index information, and determine a total dose using the total exposure time and the ultraviolet index information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for measuring UV exposure using an electronic device, the method comprising:
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detecting an exposure of UV radiation using a plurality of ultraviolet light sensors; generating a plurality of signals indicative of the exposure of UV radiation; determining a total exposure time using the plurality of signals, the determination including; identifying a start time point when the plurality of signals meet or exceed a first threshold, and identifying an end time point when the plurality of signals drop below a second threshold; determining a time dependent ultraviolet index information; and determining a total dose using the total exposure time and the ultraviolet index information. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification