Low-Cost Microprocessor Controlled Shadowband Radiometer

摘要

This paper describes the second phase in the development of a low-cost micro-processor-controlled rotating shadowband radiometer at PNL. The initial work, to develop a solar photometer, resulted in a mechanical design that is adopted for the solar radiometer with only minor changes. The goals of this effort were: (1) to improve the data acquisition system, and (2) to derive corrections for the silicon cell-based pyranometer that would allow measurements of total horizontal, diffuse horizontal, and direct normal solar radiation approaching first-class instrumentation accuracy at a fraction of the cost. Significant progress on temperature, cosine and spectral corrections has been achieved. (ERA citation 10:043978)