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US 4,229,733 AGranted
Exposure detecting device
AssigneeThomas N. Tulenko
InventorsThomas N. Tulenko, Carmen A. Di Camillo
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AssigneeThomas N. Tulenko
InventorsThomas N. Tulenko, Carmen A. Di Camillo
Estimating the term…
An exposure detecting device comprising a radiation detector means providing an output signal responsive to the intensity of received ultraviolet radiation, a storage means receiving the output signal of said detector means and providing an output signal which increases as a function of the signal received and its duration, and decreases in the absence of a received signal as a predetermined function of time. A sensitivity control means provides a reference signal, and comparing means receives the output signal of said storage means and the reference signal of said sensitivity control means and delivers an output signal when the storage means output signal exceeds a predetermined value with respect to the reference signal. Alarm means is activated upon receiving an output signal from said comparing means providing an alarm.
An exposure detecting device for determining the safe limit for exposure of a subject to ultraviolet radiation comprising a radiation detector means for sensing radiation received by a subject and providing an output signal responsive to the intensity of received ultraviolet radiation, a storage means receiving the output signal of said detector means and providing an output signal which increases as a function of the received output signal and its duration, and decreases in the absence of a received signal as a predetermined function of time corresponding to the recovery rate of the subject to the radiation, a sensitivity control means providing a reference signal related to the sensitivity of the subject to the radiation, comparing means receiving the output signal of said storage means a reference signal from said sensitivity control means and delivering an output signal when the storage means output signal exceeds a predetermined value with respect to the reference signal, and alarm means activated upon receiving an output signal from said comparing means.
A method of detecting on a current basis the safe limit of exposure to ultraviolet radiation of a subject's skin by taking into account the recovery of the subject in the absence of the radiation, which includes the steps of
Dependencies are inferred from the claim text.