Stand-alone solar generator with LED floodlights for outdoor sign illumination

摘要

Overall, the solar lighting system is aesthetically pleasing and it performed well during its first 200 days of operation. The illuminated sign was easily visible at night and the outdoor system withstood severe weather conditions: temperatures down to −18°C, snow, ice, rain, and wind. However, limitations were revealed in a failure to provide 8 hours of lighting every night. These limitations can be addressed by doubling the ratio of Battery Capacity (Ah) to LED Demand (Ah). This can be done by adding a second battery or by reducing the number of floodlights from 4 to 2.