In today's rapidly developing smart city construction process, FTTH (fiber to home) design, as a key link in the construction of basic communication networks, is attracting more and more attention. After all, this thing is directly related to the network experience of thousands of households, hehe. Many people may not know much about FTTH for Smart. In fact, it is a detailed planning and construction process for laying fiber optic lines all the way to residents' homes to enable families to achieve ultra-high-speed network connections. It is not just a single root cable! Smart cities have very high-tech and strict requirements for network bandwidth, stability, and delay, so FTTH design must also increase with the increase and upgrade!
First of all, I have to tell you some basic concepts of FTTH design so as not to be confused later. ODN (optical distribution network) is an important part of FTTH. It is like a transportation hub, connecting the local equipment and the optical cat at home, responsible for the distribution and transmission of optical signals; the spectrometer is simply to divide the optical signals into small devices that divide the optical signals into several channels, with different spectroscopic ratios to choose, such as 1:8, 1:16, etc., which must be selected according to the number of users and bandwidth requirements; and optical cables, which are the "highway" for optical signal transmission, with different core numbers and laying methods, such as pipeline laying, overhead laying, etc., are key contents to be considered during design.
Let's disassemble the key content of FTTH design in modules. This part is full of practical information, so everyone has to prick up their ears and listen carefully.
1. Selection of network topology : Star topology is used more frequently in FTTH design because it has good stability and is easy to detect problems. Unlike the one that shares a single line, if a family is broken, it may cause a lot of damage, right? Although the cost of bus topology may be a little lower, it is not enough in a smart city with a large number of users and high requirements, and it will seem unscrupulous.
2. Position planning for the deployment location of the spectrometer : There are generally two methods: first-level spectrometry and second-level spectrometry. First-level spectroscopy means to concentrate the splitter in one place, such as in the computer room of the community, which is convenient to manage, but the optical cable usage will be more; second-level spectroscopy means to do the spectroscopy in one place first, and then direct the optical signal to the spectroscopy box at the entrance of each corridor or unit in the community and divide it again, which can save some optical cables, but it is a little troublesome to manage. Each has its own advantages and disadvantages, and it must be weighed according to the specific situation!
3. Optical cable routing design : This is a meticulous job, you need to conduct on-site inspections to see if there are any obstacles on the road, such as buildings, roads, green belts, etc., and try to choose the shortest, safest and most convenient route to construction. If you encounter a road, you may need to use pipe top or broken road laying. If you are in a community, it is also a common practice to walk on the pipe or overhead along the wall. In short, you must cleverly avoid all kinds of troubles! Oh right, provides global procurement services for weak current intelligent products! By the way, this matter may be useful to someone.
4. Bandwidth and capacity calculation : In smart cities, there may be many smart devices at home, such as smart TVs, smart refrigerators, smart cameras, etc., which must be connected to the Internet, so the bandwidth requirement must be calculated accurately. Generally speaking, the bandwidth requirements of each household in the next few years are considered to be more insecure. Then, based on the total number of households in the community, multiply this bandwidth, and then consider a certain concurrency rate, you can roughly calculate the total capacity required by the entire FTTH network. You can't design it blindly, otherwise you will have to rework in the future, which will waste more money and time.
5. Construction technology and material selection : When laying optical cables, the bending radius should not be too small, otherwise it will affect the transmission of optical signals and even damage the optical cable; the installation of the connector box must be standardized, and the waterproof seal must be done well, otherwise it will be troublesome when raining and the signal will become intermittent! In terms of materials, you should choose brands with good quality and reliable reputation for optical cables. You should not buy inferior ones with cheap prices, otherwise problems will occur soon, and it will be difficult to repair them. The same is true for optical cats and optical splitters. You must choose stable and reliable ones!
Below, some details are added through Q&A to help you understand FTTH design more thoroughly
Q: What are the advantages of FTTH and ADSL?
Answer: This advantage is obvious! FTTH uses optical fiber, and ADSL uses telephone lines. The fiber transmission speed is so fast that it is not a small part. ADSL is generally only a few megabytes or tens of megabytes, and FTTH is easy to reach hundreds of megabytes or even gigabytes. Moreover, the fiber's signal attenuation is small, the transmission distance is long, and the anti-interference ability is much stronger than that of telephone lines. It will not be like ADSL. Calling or thunderstorms may affect the Internet. Therefore, FTTH is more suitable for high-end and high-demand network environments such as smart cities.
Q: Is it very difficult to carry out FTTH transformation in an old community?
Answer: Old communities are indeed more troublesome, because the infrastructure may be old, the pipelines may be blocked, or there are no pipelines reserved, and the road surface needs to be re-excavated, which will affect residents' travel and may also encounter situations where residents do not understand or cooperate. However, as long as the preliminary planning is made in detail, communicate well with the residents, organize the construction properly, and move quickly, and minimize the impact on residents' lives, the renovation can still be completed smoothly. After the renovation is completed, the network level of the community can be improved all at once, and residents can also enjoy the benefits of high-speed networks, and they will gradually understand and support it!
Personally, FTTH for Smart is a very important and indispensable part of the construction of smart cities. It provides a solid and reliable "information expressway" for smart cities, which is related to the future development of the city and the quality of life of residents. Therefore, in the process of design and construction, we must be rigorous, serious, considerate, select high-quality equipment and materials, and strictly follow the standards to build a stable, high-speed and efficient FTTH network and contribute to the vigorous development of smart cities!
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