The purpose of building digital home network is to provide a complete home entertainment, information sharing, home management, and Internet access and remote monitoring services.LAN access digital home devices include: home appliances, household instruments, desktop computers, handheld devices, infotainment devices, imaging devices, intelligent sensors, controllers and so on.Access all devices through a gateway Internet, the gateway to provide Internet access and information dissemination function of the family, and to achieve the user's remote monitoring of family function.
Digital home network is a hybrid network.According to the type of access equipment and the actual needs of the digital home LAN physical layer interface can be divided into four categories: high-speed LAN backbone network, subnet field bus control, video cable, telephone lines.
Digital home automation system solutions
Consists mainly of high-speed LAN IEEE802.3 Ethernet protocol, IEEE802.11b wireless LAN technology and Bluetooth technology, PC, portable equipment, information equipment, entertainment equipment, the interconnection between the high-end and information sharing; control sub main fieldbusrefers to the RS485, CAN, Lonworks other simple agreement on behalf of intelligent field bus technology, information appliances, intelligent sensors and controllers and other devices to connect and control; telephone lines for high-end equipment and telecommunications equipment direct access to the Internet;The way of the realization of video cable cable TV, VOD services, and support service providers to provide another way to high-speed Internet access.
Faced with such a large number of home digital products, how to ensure the most effective route to efficient use of home digital products is a problem before the people.
Digital home of the Imagination:
I believe in the near future, when people realize the digital home automation, the variety of electronic devices will be able to intervene in the case of almost no instructions.For example, automated lights and CD players can pre-set time (such as the owner time to go home) to open; and automated heating / cooling system is able to when someone is out of the room temperature regulation.
In fact, any electrical / electronic equipment and personal daily schedule can be automated, so that people could spend less time to deal with home chores, and spend more time on important things, improve the quality of life.
In addition, we can achieve through the Home Network to switch the different rooms of music sharing, such as when you download a lot of who is your favorite MP3, you can store them through the home network all at homecomputer, and can tune them out at any time to listen.
For example, you would like the MP3 download some of your office computer, and you want the computer in the kitchen to listen to them, you do not have another set of equipment in the kitchen, a separate sound system to connect to office computer.You only via a home network, using the kitchen to the computer from the office computer and MP3 tune out immediately want to hear the sweet music can be heard; to achieve all the rooms of the remote monitoring and simultaneous transmission of wireless video phones, home users can remotely via InternetMonitoring home home environment.
Now in China, the national standard of living has substantially improved gradually, increasing sales of high-end villas huge increase, but the general area of villas of 300 square meters, more luxurious decoration, special care needed to be, but apparently the Employment Securitynot a good program, and now cheaper to buy a "robot" instead of people to achieve all-weather monitor is not nothing new about the; there is the family's freedom to move the projector and so on.
However, to achieve all the family can not be separated at all times the number of network cabling, and home network cabling is the first step in home network security.
I talked about the safety of wiring difficulties:
Home wiring areas to be covered
How to prevent electromagnetic interference:
This is something we can use shielded cabling system to resolve.The system originated in Europe, in short, it is in general non-shielded cabling system with metal shield on the outside, the use of screen reflection, absorption and skin effect against electromagnetic interference and to achieve the function of electromagnetic radiation, shielding systembalanced utilization of the twisted pair transmission principle and the shielding effect of shield, which has a very good electromagnetic compatibility (EMC) characteristics.
When using unshielded twisted pair cable transmission signal, the cable will form a transmission antenna in the form of electromagnetic energy radiated around to the cable, then easily transfer the information to be intercepted.Not be protected in most cases, the eavesdropper only needs 1 set of radar receivers and electronic signal generator, and the PC, at a certain distance range, data can be intercepted, and the shield system because of its low energyradiation hard to be blocked.
Encryption and decryption to protect the network security of another solution, but it requires a large network of transmission power, and the supporting hardware and software configuration is very expensive.Choose this approach in the beginning than the cost of shielding system to install much higher.Signal transmission from the perspective of privacy, the use of shielded cabling system should be first choice.
Meanwhile, the integrity of signal transmission system by shielding a certain guarantee.Shielded cabling system can prevent the transmission of data by external electromagnetic interference and radio frequency interference.Electromagnetic interference (EMI) is mainly low-frequency interference, motors, fluorescent lights and power lines are often sources of electromagnetic interference.Radio frequency interference (RFI) is a high-frequency interference, mainly radio frequency interference.Radio, television, radar and other wireless communications is often the source of RF interference.
How to ensure network security in harsh environments:
In temperature and humidity is too high or too low, more dust environment, in a strong electromagnetic interference, strong vibration and corrosive chemical environments, for the entire network a higher requirement.The traditional design of connectors and cables can not meet these performance requirements, demand for such applications, we can buy a special plug, this plug can use a locking pin in the plug and socket connection, we can clearlylocking pin locking to hear the sound when the issue will help us to judge whether the plug and socket connections sealed.
Similarly, it also took a slight disconnect the opposite direction to rotate about, we can break very easily, no longer like the traditional industrial connectors as, laborious manner by tightening the threaded plug and socket to the fixed between the twothe connection between.Network connectivity while ensuring the safety of the smooth and signal transmission.Erjuzhezhong plug the cable in the standard cable PVC outer jacket layer 2 (ie, two layers of the cable has PVC jacket provides protection), can provide anti-Yang Guang, anti-oil, and increase electromagnetic protection and mechanical properties, cable types Baokuoshielded and unshielded, solid core and stranded cable.
Therefore, this plug in harsh environmental conditions for the network system provides a foundation to ensure safe and reliable, we believe that in such an environment of choice for network cabling system construction.
Wiring in the home security experts recommend:
The construction of the home network cabling is an important part of the family is closely related to the use of the gateway.Home wiring many places that need attention, such as weak (eg, cable) and strong electric (power line) lines in the distance and direction, location relations should refer to the relevant national standards, cable should be protected with PVC pipe and other pipes,rounded the corner and use the double-pass to the swap and so on.
And the face of the wiring on the market such as "has been tested up to 300MHz", "6 class is a Gigabit Ethernet cable select" and "absolute exclusive provider of solutions" and other misleading marketing hype and publicity, the user will undoubtedly require a neutralexpert suggestions.
Our proposal is in the home wiring to emphasize that a variety of choices, rather than the program stick Category 5, 5E class, or category 6, shielded or unshielded, copper or fiber.In this way, users can according to their needs and affordability in a variety of programs to choose.
Recommended to consider the following questions:
◆ What is the purpose now, it is estimated how the development of future applications? About the process of planning?
If you only plan to use the next 5-10 years, 100BaseT, Category 5E cable that is enough.However, if you are considering broadband will soon be ready applications, such as real-time video conferencing, three-dimensional model, desktop printing, the best solution with 6 classes.
◆ prospects are uncertain; business development speed?
If the future is uncertain, for safety reasons, to be used Category 6 solution.Or do you foresee the rapid development of business will continue, then more than 6 class solution to provide greater "growth space" to prepare for network expansion required to support the development of enterprises.
◆ Network How important in daily operations?
For example, the banking network system is the lifeblood of their operations.If you stop a few minutes, it will cause a great loss of their business.Therefore, from the full margin, easy to install and reliability point of view, Category 6 cable is a more ideal solution.
◆ how to consider the budget?
If the budget is not limited to fiber optic cable was used in all.The objective environment is a reality, the budget is limited.So, you will certainly consider Category 6 cabling solutions in the capacity of the economy, after all, than the high cost of such programs 5E 20-30%.However, when making decisions do not only focus on initial cost, which is crucial.Typically, the user can, based on the above issues and the analysis of such cases, you can know which program best suited to their needs, while cost and within budget.
Of course, if users want to find some more lazy to look at the following based on our experience of the experts sort out the typical household wiring program now!
A typical home wiring solutions:
And MODEM, lSDN so different dial-up, broadband Internet media is no longer a traditional phone line, instead of five 8-core super-known network cable UTP cable.Therefore, home decor line must be considered in laying the network, otherwise, after the Internet through broadband access, had to take the open air in the room, to renovate the room regret.
Below are a few typical household wiring program:
◆ Basic
Only implements the basic computer user access within the library and soon after set-top box in the living room access.Specifically, the distribution cable from the door to the study of the two network lines (one for broadband access money, a used phone into the line), study to harm Hall (near the TV) is a network cable, and the study to each room, four-wire of ordinary telephone (all star laying in the middle without termination).
Network cable and telephone line can be concentrated in the study of intelligent distribution of money within the box.The basic model for general users.
◆ well-off
Well-off, based on the basic model, the cloth will be four-wire ordinary telephone with a network cable instead of all at the same time to each room from a study released by a network of money.Well-off not only considered the needs of the current Internet, but after taking into account the development of broadband technologies, broadband networks at the same time more than the family needs.Users only need to purchase a hub (HUB) 就能 set up a home network, resource and information sharing.
Well-off families more suited to the needs of the future, especially for home office, home users with multiple computers.
◆ Luxury
Luxury type in Siu Ho, based on the increased home security, gas alarm, fire alarm circuits to meet higher requirements.
Written in the last words:
In the end we need to remind you that the network cable is different from the common cable, in order to ensure a higher bandwidth. Network cable connection must be using a dedicated module and connectors for termination; and all cables required to cover PVC pipe laying, threadingprocess to avoid cable twisting the straight and 90 degree bend; network cable laying as far as possible not to walk the AC power line and cable, socket and power outlet to keep distance of more than 20CM to prevent Jiaoliu Dian magnetic field interference.
However, ordinary users do not need to worry too much about wiring, because Fast Ethernet has a very mature technology, the corresponding UTP cable, RJ-45 modules and panels and so has been relatively cheap, and the quality is more stableTherefore, the family network cabling design goal is usually easy to achieve.
However, once the wiring is characterized by complete, it is difficult to modify, so when the user in the design should take into account the need for some time to come.For example, in addition to the computer table and sofa set of information points, the need for information points in the kitchen layout to accommodate the occasional breakfast in the kitchen, Internet access, or the needs of future smart fridge? In the TV cabinet is a point behind the layout of informationvery visionary approach, from game consoles, set-top box to the TV, and before long, we will see RJ-45 Ethernet interface to configure a variety of appliances out.
For larger residential or like the pursuit of new technology users, the use of wiring devices is also a very good choice, this can make a home network management, upgrades and maintenance easier.It should be noted that, in the home network, wired and wireless is not a contradiction, WLAN Ethernet can still be used as an extension and supplement to exist.When necessary, AP can be connected to any of the information points, for the space to expand the wired network.An interesting fact is that many people buy a WLAN AP is mainly due to the toilet in order to be able to access, in contrast to pre-laid in the toilet in the information point of the user is clearly more prescient.