With the latitude and longitude is the switching time of 70 thousand LED lights lit City

With winter approaching, the dark time more early. Many people reflect the lamp switch time in front of the road is not the same, sometimes early or late, don't know what the reason is. 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 conversion light 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 is displayed on the day of the switch time. "This morning the off time is 6:04, the evening light time is 17:01." Lighting control center director Yuan Yongzhi told reporters. It is understood that 365 days a year, every day of the switch time are not the same.

Then according to what determines the switch time every day? Yuan Yongzhi told reporters, under normal circumstances, Beijing will determine the working time, the system will automatically according to the latitude and longitude difference calculation, to determine the local lighting time. The reporter saw a few days from this light time curve, the daily working time will be 1-2 minutes earlier than the day before, the day before turning off time 1-2 minutes late. "The night lighting should be basic to the summer solstice, after 8 in the evening light, light at the earliest in the winter solstice, about 4:30 in the afternoon, a difference of nearly 4 hours." The original never said, 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, according to early open street, ensure that the public convenience. Some special weather, extreme weather or major activities, the staff will control the opening and closing the lamp at any time according to the actual demand.

The control center can see every street lamp

"At present, the city is a transformer control street lamp switch one kilometer around, so within one kilometer of 40 - 50 or so only at the same time bright street lamp at the same time off." The original Yong Zhi said that the future Yantai will gradually introduce a single lamp control system, has been in the world road through the installation of 540 sets to do the pilot, from the control center can see clearly which lamp does not light, 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 the two road as an example, the important sections of the urban area, street lamps installed in 2005. About 8 years to replace the use of general street, two street old street has reached the life, extended service lamps are small, such brightness is not enough." The original never said, but the new LED light source has the advantages of high light efficiency, low energy consumption, long service life, good color, 150 Watt LED lamp, lighting effect is equivalent to 500 Watt sodium lamp.

The reporter learned from the management, the relevant departments will formulate annual LED lamp replacement program, from primary and secondary roads to the streets, will continue to popularize energy-saving lamps.

The cable was cut off the automatic alarm system

The street often suffers from the "black hand", someone smashed, there was a car, have long used to quilt Le bad. The reporter understands, causing the most serious is the loss of cable theft, so the lamp has been in the past few years of cable 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. Regardless of day or night, if the main cable is cut off, the current loop will disappear, remote detection will be the first time the streetlight monitoring system prompt the occurrence of cable theft.

LED more information, please click on the Chinese LED network or WeChat public account (cnledw2013).