Energy savings of home growing plants by using daylight and LED

This paper is focused on the research of the energy saving technology for household dissemination of plant factory through using artificial light source. By controlling the LED according to the intensity of radiation of sunlight through using photo sensor, 260 PPFD (Photosynthesis Photon Flux Density), which is needed to the crop, are consistently maintained regardless of the change of the photo-environment. For the optimum growth efficiency of the crop, the percentage of LED by colors is decided. The percentage of the energy saving between the plant cultivation by the artificial light source and the plant cultivation by sunlight suggested at this research is compared, and about 43 % of the saving effect is acknowledged.