부산대학교 도서관

Radiation intensity which is measured in power per unit area is used to analyze the extent of effect of radiation and can be used for analytical studies. In this paper, a real time monitoring system is proposed to collect the intensity of sunlight and transmit the data using wireless communication for a suitable range with less transmission loss. Two radiation sensors are used to measure the intensity of light - one is to quantify intensity of directly incident light and other for reflected light from earth. It works on the basis that intensity of light is directly proportional to the voltage. This data acquired is transmitted using a powerful Sub-1GHz wireless microcontroller. The proposed system was tested at different intervals of time. The results showed stable voltage readings proportional to the light intensity. These radiation values were transmitted successfully in wireless mode for a range upto 250m without any transmission loss.