Autonomous, low-cost, automatic window covering system for daylighting applications

摘要: A system for the automatic regulation of daylight admitted into a room, specifically intended daylighting applications. preferred embodiment, 10, consisting conventional control unit 11, exterior brightness sensor 12, and electronically controlled window covering 13, operates to block direct solar radiation while admitting substantial diffuse illumination. Control 13 are interconnected in known manner enable 11 register external illumination, actuate 13. consists microcontroller 14, real-time clock/calendar 15, Non-Volatile Memory (NVM) 16. Microcontroller NVM 16 14 output exchange data with holds pre-stored which defines desired setting as function time day year, prevailing latitude, longitude, azimuth orientation. In this is one will admission incident radiation, still periodically registers measured by stored 16, estimates on basis these data, actuates setting.