Low-cost Solar Insolation Measurement System using Estimation Technique from the Brightness Sensor
Keywords:
solar insolation detector, low cost, estimationAbstract
This research presents study and design of low cost, high performance solar insolation measurement. The proposed measurement system consists of a brightness sensor that can measure brightness of UV, visible and infrared lights. Brightness values are then recorded into the data collection resources through the Arduino board, and these parameters are compared with the standard values. The experimental results show that visible light provided the best representative data for the standard solar insolation values with R2 of 0.98, followed by UV and infrared with R2 of 0.97 and 0.94, respectively. As a result, visible light was used to form the equation for determining the solar insolation, which was Isolar=246Xvis+ 126. The results also showed that the accuracy slightly decreased when the number of data samples decreased with the error rate less than 1%. with relatively low cost of 1,345 Baht (45 $US), which is 10-15 times lower compared to the standard measurement system.
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