Look at the building during the day and the night view at night. In some places, urban lighting has become a business card and window to showcase the charm of the city.
An official of the Urban Construction Department of the Ministry of Construction once said: "Urban lighting is a science, a culture and an art. Urban lighting reflects the image of a city and represents the culture of a city, reflecting the scientific management of a city. It is a social system project.†With the continuous expansion of urban construction scale and the continuous improvement of construction level, urban street lighting has become an important part of urban construction. The current urban street lighting not only plays an important role in illuminating the city, reducing urban night traffic accidents, preventing crimes, and protecting citizens' safety, but also plays an irreplaceable role in beautifying the city and improving the city's taste.
While urban street lighting brings brilliant, beautiful and convenient, it also encounters many problems, such as management problems, cost problems, power problems, and cable theft. These problems have affected and plagued the construction and development of urban street lighting. How to solve these problems? Guangzhou City has organized a seminar on urban street lighting control and anti-theft technology and new product seminars. The significance of the seminar is not only the introduction of a series of new energy-saving and anti-theft urban street lighting technologies, new products, but more importantly, it marks that urban street lighting is achieving energy saving, anti-theft, humanized control and refined management. Turn.
Among the many problems faced by urban street lighting, energy saving is an urgent problem to be solved. It not only involves reducing the cost of urban street lighting, but also involves the issue of electric energy. Especially in the context of power shortages, urban lighting in some places has been accused of “image engineering†and become the “culprit†of competing for electricity with residents. . The construction of “light projects†in some cities has also been affected, forced to delay construction, or to lower standards. Some cities have built “bright projects†to reduce the brightness. The city is majestic during the day and black at night, which not only affects the night scenes of the city, but also creates new waste.
Another important cause of urban lighting waste is the control of urban lighting switching time. It needs to be lit without lighting, which affects the normal operation of the city; it does not need to be lit and lights up, causing unnecessary energy waste. In fact, when to turn on the lights and when to turn off the lights can be followed regularly. According to this law, Guangzhou City has developed a ZLT series of urban lighting and other brightness time control terminal systems with independent intellectual property rights. Through reasonable system design and analysis, it can fix a reasonable switching time of a city every day for 365 days a year. Switching city street lights on and off with the same brightness every day not only ensures urban lighting, but also saves a lot of energy. According to reports, this system can also carry out remote control switch control for the special requirements of festivals, government affairs, astronomy, meteorology and other reasons, so that the city's lighting is more accurate and reliable, and the management is more precise and humanized. The streetlight management department of our city should consider adopting such advanced facilities when setting up street lights.
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CWDM - Coarse Wavelength Division Multiplex
CCWDM is Compact CWDM (Compact Coarse Wavelength Division Multiplexing), a wavelength division multiplexing technology based on TFF (Thin Film Filter). It works in the same way as CWDM modules, except that CCWDM uses free space technology. , compared with the common CWDM optical fiber cascading method , the CCWDM package size is greatly reduced compared with CWDM modules, and the insertion loss is lower and the consistency is better; it can replace CWDM Products are used in telecommunications, enterprise networks, PON networks, cable television and other fields. The lower insertion loss enables the CCWDM module to have lower signal attenuation during use, thereby reducing the power requirements of the signal transmitter.
For the CWDM module, limited by the minimum bending radius of the optical fiber line, the size of the packaging box cannot be made too small, resulting in most of the space in the box being idle. The adjacent channels of CCWDM use parallel beams to cascade in free space instead of optical fibers. Without the optical fiber used for cascading, the size of the CCWDM packaging box can be greatly reduced. For example, the size of the common standard 4CH CWDM is 80×60×12 mm, and the size of the CCWDM module of Yiyuantong is 50×27×7.7mm, which is only 1/4 of the standard CWDM package size. Can be widely used in high-density environments.
Coarse Wdm Splitter,Wdm Splitter,Wdm Device
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