A rapid method of estimating the solar irradiance spectra with potential lighting applications

Yuan Gao, Jianfei Dong, O Isabella, M Zeman, GQ Zhang

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Diverse solar irradiance spectra can be observed under different conditions of time, date, location, weather, etc. Since the solar irradiance spectrum is required by certain scientific and engineering applications, obtaining accurate spectral data is essential. Measurements by spectrophotometers are able to achieve accurate real-time data with high resolution, but at high expense. While in some engineering applications, the requirements on accuracy and resolution are much lower than that in a typical scientific research. Therefore, a rapid method of estimating the solar spectrum is proposed based on an available spectral model in this paper. In order to achieve fast estimation, we simplify the input parameters of this model into five key inputs, including latitude and longitude, altitude, date and time, sky and ground type. The first three parameters are easy to obtain from GPS and the internet. Sky and ground types include common types of sky and ground, which can be input manually or processed automatically by analyzing a digital image of target sky or ground. The automatic input is realized through dominant color extraction or by training an artificial neural network. Results show that the proposed rapid method can generate different spectral power distributions based on distinct input conditions. Two device frameworks are also proposed to implement the rapid method, which is applicable to many fields. LED lighting is one of the most prominent applications. Users can easily share local sunlight with each other through an APP in mobile phones
Original languageEnglish
Title of host publicationProceedings of the 13th China International Forum on Solid State Lighting
Subtitle of host publicationSSLChina 2016, Beijing, China
Number of pages4
Publication statusPublished - 2016
Event13th China International Forum on Solid State Lighting - Beijing, China
Duration: 15 Nov 201617 Nov 2016


Conference13th China International Forum on Solid State Lighting
Abbreviated titleSSLChina 2016


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