LED street lights with intelligent dimming function are imperative

Led lighting is definitely the future trend. The reasons for this observation include the long life, power saving and reliability of LED lighting. In addition, the development of LED lighting dimming function is also the key to further replace traditional lighting. one. That is to say, LED lamps can not only have two choices of light or dark, but must provide dimming function like traditional incandescent lamps, so that LED lamps have the advantages of traditional lighting and LED lighting at the same time, which inevitably promotes the popularity of LED lighting.

For example, in the street lighting part, with the development of technology, when the service life and stability reach a certain level, whether the street lamp is dimmable will become another emphasis. Basically, although the current LED street lamp standards are not yet complete, and the product specifications are different from place to place, more and more LED street lamp manufacturers have incorporated intelligent control into one of their LED street lamp functions, and on power management and future maintenance. In terms of points, the intelligentization of LED street lights is also imperative. Its function is to adjust the life of LED street lights according to the needs of the environment or to determine whether some people pass the vehicle to achieve energy saving.

For the necessity of LED street light dimming function, Everlight Electronics said that the company's second generation of new Dolphin LED street light (EverlightDolphin II), the lamp efficiency is up to 100lm / W, and equipped with dimming control function, can be bright according to the current environment Adjusting the brightness of the LEDs, this design can save unnecessary power waste. Another example is Jinruitong Technology's new power supply for LED street lamps, which is mainly aimed at improving the current market with dimming control as the dimming control. The power supply can be operated under a certain voltage. Dimming provides linearly controlled signal control so that the output constant current can be adjusted linearly corresponding to the control signal to achieve the effect of adjusting the current intensity without generating electromagnetic interference. It is understood that the LED street light system developed based on this power supply can save nearly 75% of the power.

In addition, an upgraded version of LED street light from a company in Shenzhen also adopts a new intelligent driving power supply, introducing a central control system to remotely monitor the luminaires, and instantly adjust the brightness of the luminaires (0-100%). The company said that by setting LED lamps, LED street lights can maintain strong illumination during busy hours, and automatic dimming will be started when the car is scarce in the middle of the night, so that the LED street lights maintain low illumination. Overall, the main advantage of intelligently controlling LED street lights is that they can significantly reduce consumption.

Of course, not only LED street lights need to have dimming function, but also LED lighting in various other application fields is required to have dimming function. Basically, LEDs use a constant current method to adjust the LED output brightness as the most effective method at present. The method can be roughly divided into analog current adjustment and pulse width modulation (Pulse-Width Modulation (PWM)).