公开(公告)号：US5686727A

公开(公告)日：1997-11-11

申请号：US534546

申请日：1995-09-27

申请人： Arthur Reenstra ,  Wende Reenstra ,  Thomas Belletete ,  Curtis A. Vock

发明人： Arthur Reenstra ,  Wende Reenstra ,  Thomas Belletete ,  Curtis A. Vock

IPC分类号： A61F5/02 ,  G01J1/42 ,  G01J5/10

CPC分类号： G01J1/429 ,  G01J1/0219 ,  G01J1/0233 ,  G01J1/0425 ,  G01J1/44

摘要： An ultraviolet radiation detection exposure system determines either ultraviolet flux or accumulated ultraviolet energy. A detector converts the ultraviolet radiation into voltage, and a voltage-to-frequency converter provides a corresponding frequency. If the system measures flux, a conversion subsystem converts the frequency to an associated ultraviolet flux in watts. If the sensor measures ultraviolet energy over a period of time, a counter counts at the frequency of the voltage-to-frequency converter thereby integrating the received ultraviolet energy at the detector. A reset button allows the user to reset the system, clearing the counter, prior to entering the sun for the day. A warning light, display, or buzzer indicates to the user of the system that her skin is in danger of receiving a sun burn. A plurality of fibers and/or lambertian half-spheres are used to provide substantially uniform solar acceptance. A solar cell can be used to power the apparatus, especially within a watch configuration.

摘要翻译： 紫外线辐射检测曝光系统确定紫外线通量或累积的紫外线能量。 检测器将紫外线辐射转换为电压，电压 - 频率转换器提供相应的频率。 如果系统测量通量，则转换子系统将频率转换为相关联的紫外线通量（瓦）。 如果传感器在一段时间内测量紫外线能量，则计数器在电压 - 频率转换器的频率上进行计数，从而将接收到的紫外线能量集成在检测器处。 复位按钮允许用户在进入太阳之前重置系统，清除计数器。 警告灯，显示屏或蜂鸣器向系统的用户指示她的皮肤有遭受日晒的危险。 多个纤维和/或朗伯半球用于提供基本均匀的太阳能接受。 太阳能电池可用于为设备供电，特别是在手表配置中。