A Sensor Integrated Ultra-long Span LED Street Lamp System

As the LED´s lumen efficiency increases rapidly in recent years, many new LED illumination applications are emerging. Based on the analysis of LED´s characteristics, our optimization scheme and design methods for LED street lamps were proposed. A unique street lamp with ultra-long span and high total uniformity was designed as an example. The simulation results demonstrated that the road light utilization efficiency was 85% and the total uniformity was 0.52 for a 100times30 square meters test area at the height of 20 meters, which was much better than the current standard for the main road, proposing a challenging to the current standard with high pressure sodium lamps. Various sensors integrated with the LED street lamps were also discussed as the mainstream design concept for the next-generational LED street lamps.