PC-based instrument for monitoring global solar radiation using a photo transistor matrix

Date

3-2004

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Zaldy A. Andales

Abstract

This study aimed to design and implement an instrument for PC-based monitoring of global solar radiation. This was done with the use of a phototransistor matrix device interfaced to a computer through analogue multiplexers and an Analogue-to-Digital Converter Softwares were implemented to access the instrument hardware through the parallel port. Calibration was done on the instrument. The calibration equation was found out to be an exponential function given by y = 0.56466- exp(x/1.87705) and had a correlation coefficient of 0.9778, of which is within the tolerable instrument error of 10%. Data was gathered at the rooftop of the Institute of Computer Science Annex and at the National Agromet Station, UPLB A comparative analysis was done between the implemented instrument and the instruments used at the local weather station, National Agromet Station. Possible sources of the errors seen from the analysis were stipulated. The study was also able to implement an instrument that cost only $120.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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