LED automatic intelligent street lamp

- Jun 25, 2019-

LED automatic intelligent street lamp adopts the fourth generation light source (LED) as the main body of lighting, with high luminous efficiency, low power consumption, long service life, safety and reliability, high light output rate of the light source, which is conducive to environmental protection and other characteristics. It is applied to Main road, industrial park road, urban and rural road and other fields.

The principle :

Fully considering the actual situation of urban road lighting, LED automatic intelligent street lamp adopts single-chip microcomputer control technology to carry out dynamic intelligent management of street lamp illumination and realize humanization of street lamp. Because LED street lamps have the characteristics of extremely fast transient response that other street lamps do not have, it is easy to use khz-level pulse width modulation (PWM) mode to adjust the duty cycle of LED street lamps. (for example, when 0.5ms is bright and 0.5ms is off within 1ms, its brightness is 50% of the full brightness), the overall luminance of lamps is adjusted. Working at such a high frequency does not cause stroboscopic phenomena. By setting the lamp, the lamp can maintain a strong illumination during busy periods, and start to automatically adjust the light when there are few people in the car at the end of the night, so that the lamp can maintain a low illumination. In addition, according to the prosperity of different cities, lighting conditions and traffic flow, the built-in programmer can be used to set the mandatory illumination level and the time-length ratio of strong and weak illumination, so that street lamps can be periodically executed in accordance with the new Settings. That is, the realization of personalized local road lighting.

advantage:

In addition, LED street lamp light source (LED) has a good single direction, and the light removal rate is very high, while the traditional gas street light source is omni-directional, relying on the reflective cover to gather a single direction of light, the loss is large, and the light removal rate is much lower than LED street light. Therefore, the actual light efficiency of traditional street lamps on the road is obviously inferior to LED street lamps. The predictability benefit analysis compares the economic benefit of 700 street lamps laid in 10 kilometers. The economic benefit analysis below is an ideal analysis. In fact, it can be seen from the 15 and 16 items in the technical parameter table that the advantages of LED street lamps are far beyond the ideal analysis.

prospects:

According to the current situation of street lighting in China, pedestrians and vehicles on the roads have become scarce in small cities after 9 PM and large and medium-sized cities after 2 am. From this time of day until 6 a.m., it is clearly not necessary to maintain a high level of light on a road with such low traffic. It is understood that urban public lighting accounts for 30% of China's lighting consumption, about 43.9 billion kWh, with an average electricity price of 0. At 65 yuan /kWh, the annual expenditure is 28.5 billion yuan. In municipal spending extremely nervous today, the vast majority of domestic cities and regions almost unanimously adopted the approach of isolation of the lamps in the turn off the lights to save money, not only caused the pavement illuminance distribution, buried a hidden danger to the public security and traffic safety, and early grid voltage rise caused damage to street lamp life, need to change every year a large number of lamps and lanterns, therefore cannot be described as true in the sense of energy conservation. Energy saving is the energy saving by lighting the lamp to ensure the lighting effect. The main advantage of the above intelligent control is to significantly reduce the power consumption, saving up to 40% of the power consumption, to avoid the hidden danger of turning off the lamp. It is of far-reaching significance to popularize efficient and energy-saving intelligent lighting appliances, effectively use light energy according to the actual situation of lighting, and save lighting electricity.