Realization of an Inexpensive Embedded Pyranometer for measuring the amount of direct incident solar radiation in the visible and near-infrared

Abstract

This paper presents a detailed description of a mini pyranometer (8-bit 2 input). This device is dedicated to gnirusaem direct incident solar radiation, In the visible and near-infrared (using two broad-spectrum photodiodes, BPW21 and BPW34, respectively). This device is often coupled with an automatic recorder (a datalogger) to establish a record of measurements over a long period, to proceed to a good dimensioning of a system of photovoltaic panels on a region in the process of electrification in solar energy. This assembly's realization was centered on using the
smallest 8-bit microcontroller existing on the current market, a PIC10F222 of 6 pins only, from the baseline range of the Microchip. This microcontroller is responsible for ensuring all functions available in this device (measurements, controls, and L.U.T schedule management for each sensor concerned), using specialized integrated modules
such as a 2-channel 8-bit analog-to-digital converter. Its low consumption (170 amps under 2V, 4MHz) makes it particularly recommended for designing and producing devices with high energy independence.