System and method for predicting solar ultraviolet exposure and ultraviolet radiation hazard
First Claim
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1. A system for predicting the amount of remaining exposure time an entity should be exposed to natural UV radiation during a day comprising:
- means for determining a UV radiation exposure limit for the entity;
means for determining sunrise time and sunset time for the day;
means for determining irradiation and time periodically during the day;
means for calculating a predicted irradiation exposure as a function of said irradiation, said sunrise time, said sunset time, and said time periodically during the day;
means for determining a limiting time when said predicted irradiation exposure will equal or exceed said UV radiation exposure limit; and
means for predicting the amount of remaining exposure time the entity has during the day to avoid the harmful effects of UV radiation exposure as a function of said limiting time.
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Abstract
A system, method, and apparatus for determining the remaining time a user has before maximum natural UV radiation exposure is reached, and the clock time at which natural UV radiation exposure should end, based on measured irradiation and other parameters.
32 Citations
22 Claims
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1. A system for predicting the amount of remaining exposure time an entity should be exposed to natural UV radiation during a day comprising:
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means for determining a UV radiation exposure limit for the entity;
means for determining sunrise time and sunset time for the day;
means for determining irradiation and time periodically during the day;
means for calculating a predicted irradiation exposure as a function of said irradiation, said sunrise time, said sunset time, and said time periodically during the day;
means for determining a limiting time when said predicted irradiation exposure will equal or exceed said UV radiation exposure limit; and
means for predicting the amount of remaining exposure time the entity has during the day to avoid the harmful effects of UV radiation exposure as a function of said limiting time. - View Dependent Claims (2, 3, 4, 5)
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6. A system for predicting the amount of remaining exposure time an entity has during a day in order to avoid the harmful effects of natural UV radiation exposure comprising:
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input means capable of receiving a UV exposure limit for the entity, and a sunrise time and a sunset time for the day;
a clock capable of periodically providing a time during the day;
at least one detector capable of periodically determining irradiation during the day;
a processor capable of periodically calculating a predicted irradiation exposure as a function of said irradiation, said sunrise time, said sunset time, and said time;
said processor capable of determining a limiting time when said predicted irradiation exposure will equal or exceed said UV exposure limit; and
said processor capable of periodically predicting an amount of remaining exposure time the entity has during the day to avoid the harmful effects of the natural UV radiation exposure as a function of said limiting time. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A method for predicting the amount of remaining natural UV radiation exposure time an entity has during a day comprising the steps of:
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determining a UV exposure limit for the entity;
determining sunrise time and sunset time for the day;
determining irradiation and time periodically during the day;
calculating a predicted irradiation exposure as a function of the irradiation, the sunrise time, the sunset time, and the time periodically during the day;
determining limiting time when the predicted irradiation exposure will equal or exceed the UV exposure limit; and
predicting the amount of remaining natural UV radiation exposure time the entity has during the day as a function of the limiting time. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An apparatus for predicting the amount of remaining exposure time an entity should be exposed to natural UV radiation during a day comprising:
an exposure prediction device including;
means for determining a UV radiation exposure limit for the entity;
means for determining sunrise time and sunset time for the day;
means for determining irradiation and time periodically during the day;
means for calculating a predicted irradiation exposure as a function of said irradiation, said sunrise time, said sunset time, and said time periodically during the day;
means for determining a limiting time when said predicted irradiation exposure will equal or exceed said UV radiation exposure limit; and
means for predicting the amount of remaining exposure time the entity has during the day to avoid the harmful effects of natural UV radiation exposure as a function of said limiting time. - View Dependent Claims (21, 22)
Specification