Automatic monitoring: "lights off at sunrise and lights on at sunset"

It was dawn and the lights were on. Yesterday, Mr. Liu, a citizen of Zhengzhou, felt it was too wasteful. What is the standard of Zhengzhou street lamp switch? Yesterday, the staff of Zhengzhou urban lighting management office said that the street lamp switch in Zhengzhou is calculated by the street lamp automatic monitoring system completely according to the sunrise and sunset time of the sun, which is more scientific.

At present, both the sections controlled by Zhengzhou power supply company and Zhengzhou urban lighting management office use the street lamp automatic monitoring system. This system is controlled according to the standard time of sunrise and sunset of the sun every day. This standard time is calculated according to the longitude and latitude of the earth in the city. The time of sunrise and sunset is different every day.

This is the standard action of this system. Generally, manual intervention is rarely carried out. Manual intervention will be carried out unless the sky suddenly darkens and the lights will be turned on in advance. In principle, the switching time will not be adjusted manually on cloudy days.

At present, most urban street lamp automatic monitoring systems in China realize the so-called street lamp automatic intelligent control according to this simple street lamp control cabinet. However, this kind of street lamp control has many disadvantages. It is automatically controlled by computer according to certain procedures. It can not be called "intelligent street lamp control" in the real sense. It is far from keeping up with today's urban intelligent street lamp control system.

With the vigorous construction of the Internet of things, some cities in China have realized the real "intelligent street lamp control". The street lamp remote intelligent monitoring system is composed of dispatching center, street lamp monitoring center, communication platform, street lamp remote measurement and control terminal RTU, metering and measurement (AC voltage transformer, AC current transformer, etc.) equipment, control equipment (AC contactor, etc.).

It can not only realize the intelligent control of street lamp grouping and single lamp, but also realize the functions of unattended and remote prediction and alarm. It is no longer simply controlled automatically by computer programs, but can realize manual intervention according to the specific conditions of the weather. It can not only achieve intelligent control in a real sense, but also achieve the purpose of environmental protection and energy saving.