A method for controlling streetlights located at a streetlight control area using a streetlight power control system controls an image capturing device to capture digital images of at least one route section of the streetlight control area at a predetermined interval. Light of a streetlight corresponding...http://www.google.com.hk/patents/US8081801?utm_source=gb-gplus-share專利 US8081801 - Device and method for controlling streetlights
