Combined with latitude and longitude calculation switch time 70 thousand LED lights lit City

As winter approaches, it gets dark early. Many people reflect the front section of the street lamp switch time is not the same, sometimes sometimes sometimes late, I do not know what is the reason. Yesterday (3) morning, the reporter visited the City Urban Management Bureau a tube lamp control center, here 70 thousand LED lights on and off to realize computer automatic control, according to the Beijing based lighting time Yantai jingweidu automatic adjustment, such as special weather conditions, can also manually switch.

According to the latitude and longitude to turn on time

Yesterday (3) 9 morning, Mount Huangshan District of Zhifu is located near the small lamp control center, Zhifu district and Binhai Road, sea view, city street and other urban main road more than 70 thousand LED road lamps are here to control the opening and closing.

The big screen shows the time of the day. This morning the lights off time is 6:04, the evening turn on time is 17:01. Lamp control center director Yuan Yongzhi told reporters. It is understood that 365 days a year, every day the switch light time is not the same.

So what is the basis for determining the daily switching time? Yuan Yongzhi told reporters, under normal circumstances, Beijing will determine the day of the lighting time, the system will be based on latitude and longitude difference estimates, automatically determine the local lighting time. From the light of these days on the curve of time to see the reporter, the daily lighting time will be 1-2 minutes earlier than the previous day, the corresponding lights off time than the previous day, 1-2 minutes. "The lighting should be the last day of the summer solstice, the basic to 8 after the evening light, the lights should be around the winter solstice, about 4:30 in the afternoon, a difference of nearly 4 hours. "Never say, but if you encounter a rainy day when the lights there will be time to offset the need according to the specific weather conditions artificially adjusted in real time, as in the last few days of rainy weather, the dark is relatively early, raising pipe arrange timely adjust, early opening lamp according to the situation, to ensure that the public convenience. Special weather, extreme weather or major events, the staff will be based on the actual needs of the control at any time to open and close the street light.

Control center can see every street lamp

"At present, the city is a transformer to control a kilometer around the street lamp switch, so a kilometer within the 40 - 50 lights can only be light at the same time off. Original Yong Chi said that the future of Yantai will gradually introduce a single lamp control system, has been installed in the world road south 540 sets of pilot, from the control center can clearly see which lights are not bright, in order to organize maintenance. In recent years, have gradually replaced the tube at the airport road, two road, Guanhai road and other main roads of the street, the original old old street lamp LED lamp energy saving and replaced all the good lighting effect, greatly improves the lighting at night. To two road, for example, is an important part of the city, street lamps installed in 2005. General use of street lamps for about 8 years to replace, the old street lamp has reached two years of service life, the presence of extended service street lamp brightness is small, energy saving shortcomings. Original Yong Zhi said, and the use of the new LED light source with high luminous efficiency, low energy consumption, long service life, good color rendering and other advantages, 150 Watt LED street lamp, equivalent to 500 Watt sodium lamp lighting effect.

Reporters learned from the management department, the relevant departments will develop LED street lamp replacement plan every year, from primary and secondary roads to the streets, one after another to the popularity of energy-saving lamps.

Automatic alarm for cable cutting system

The street often suffers from the "black hand", someone smashed, there was a car, have long used to quilt Le bad. Reporters learned that the most serious loss caused by the theft of the cable, so the street lamps in the past few years has been studying how the cable anti-theft.

Yuan Yongzhi introduced that the principle is the power supply cable anti-theft lamp is formed at the weak loop, when the system is under normal working conditions, the cable is not stealing, normally there should be a loop current of 1 to 3a, the street lamp monitoring system automatically according to the ratio of current transformer ratio of amplification, can be detected by dozens of an even bigger current. Whether in the day or at night, if the main cable is cut off, then the loop current will disappear, remote detection will be the first time by the street light monitoring system prompts where the cable theft.

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