The design idea of LED intelligent energy-saving street lamp
The traditional light sources used for road lighting are mainly high pressure sodium lamps. The LED street lamps are mainly used in some trunk roads, but they have shown obvious difference. In the light effect, high pressure sodium lamp is up to 140lm/W, than the current commercial 100lm/W high power LED light efficiency is high, but the LED color index (about 80) is much more than high pressure sodium (about 25), and in the same illumination, white LED helps the driver or pedestrian recognition target, the road lighting the effect and comfort degree is much higher than that of high pressure sodium lamp. In the lighting efficiency, high pressure sodium lamp designed by considering the spherical reflector efficiency of high pressure sodium lamp efficiency generally only 70%. but LED is a directional light, such as the use of appropriate design of light distribution, most of the light will directly onto the pavement, the lamp efficiency can reach above 85%.
Smart streetlights, I conceived. But it's out of the industry now.
Sound control is not recommended...The timing control circuit can be added in the driving power source to adjust the current supply of the LED light source to realize intelligent dimming.The advantages of this approach are relatively easy to implement and low cost.
I do street power supply, single road constant flow, character ratio is very high
