Carballar Alejandro, Rodríguez-Garrido Roberto, Jerez Manuel, Vera Jonathan, Granado Joaquín
Electronic Engineering Department, Universidad de Sevilla (E.T.S. de Ingeniería), C/Camino de los Descubrimientos s/n, 41092 Sevilla, Spain.
Capgemini Engineering, Edificio Oxxeo, C/Puerto de Somport 9, 28050 Madrid, Spain.
Sensors (Basel). 2024 Jun 6;24(11):3674. doi: 10.3390/s24113674.
A new cost-effective radiometer has been designed, built, and tested to measure direct normal solar irradiance (DNI). The proposed instrument for solar irradiance measurement is based on an optical fiber as the light beam collector, a semiconductor photodiode to measure the optical power, and a calibration algorithm to convert the optical power into solar irradiance. The proposed radiometer offers the advantage of separating the measurement point, where the optical fiber collects the solar irradiation, from the place where the optical power is measured. A calibration factor is mandatory because the semiconductor photodiode is only spectrally responsive to a limited part of the spectral irradiance. Experimental tests have been conducted under different conditions to evaluate the performance of the proposed device. The measurements confirm that the proposed instrument performs similarly to the expensive high-accuracy pyrheliometer used as a reference.
一种新型经济高效的辐射计已设计、制造并经过测试，用于测量直接法向太阳辐照度（DNI）。所提出的用于太阳辐照度测量的仪器基于光纤作为光束收集器、用于测量光功率的半导体光电二极管以及用于将光功率转换为太阳辐照度的校准算法。所提出的辐射计具有将光纤收集太阳辐射的测量点与测量光功率的位置分开的优点。由于半导体光电二极管仅对光谱辐照度的有限部分具有光谱响应，因此校准因子是必不可少的。已在不同条件下进行了实验测试，以评估所提出设备的性能。测量结果证实，所提出的仪器的性能与用作参考的昂贵高精度日射强度计相似。
