Design and Fabrication of an Integrated Circuit for Ultra Violet Radiation Measurements

چکیده مقاله

Measurement of the ambient solar UV radiation has been performed worldwide for many years. The sun is the main source of exposure to UV for most individuals. Sunlight consists of visible light (400–700 nm), infrared radiation (>700 nm) and UV radiation. Generally the quality (spectrum) and quantity (intensity) of sunlight are modified during its passage through the atmosphere [5]. The stratosphere stops almost all UV radiation <290 nm (UVC) as well as a large proportion of UVB (70–90%) In this paper the measurements were performed in Kashan city of Iran on the ground level with about 5 m distance from any wall. Figure 4 shows the variation of the integrated hourly UVA radiation throughout a day with clear sky. Note that an individual’s level of exposure to UV varies with latitude, altitude, time of year, time of day, clouding of the sky and other atmospheric components such as air pollution