With the entry of broadband Internet, many scenarios that were previously only imaginable will be realized. Many manufacturers are committed to the development of various household information products, coupled with the continuous influx of foreign products after China's accession to the WTO, it is expected that in the next three to five years, these smart home applications will gradually enter the home, installing broadband smart home wiring system The implementation platform is provided for these applications, otherwise there will be a situation where new products cannot be used.
Smart home wiring connection method
1. From the perspective of stability, the star connection is the most stable and reliable, the bus connection is second, the power line carrier connection is again, the infrared connection (IR) is again, and the wireless (RF) connection is the worst. Traditional security systems are star-connected and therefore the most reliable.
Although the bus connection also requires wiring, when the number of points is large, the number of connections is less than that of the star type, and the reliable line is generally acceptable.
Power line carrier and wireless connection have similar problems, mainly the interference problem between adjacent households. From the technical point of view, the power line carrier can use isolation and other technologies to solve the mutual interference problem, and the wireless method needs to solve each other at low cost. Interference is relatively difficult. Generally, only frequency hopping technology can be used to solve it. In addition, wireless has power supply problems. Therefore, wireless should be a secondary option in home intelligence, especially security systems.
2. Look at the problem from a market perspective. There are three markets for family intelligence: new residential market, personal home improvement market, and old home renovation market. New residential areas are generally based on residential units, requiring networked alarms and information interaction. The intelligentization of the community in the construction of the wiring requirements should not be based on the complexity of the wiring, and reliability as the first requirement. The entire realization of a community is intelligent, even if there is a problem, it is the total amount of problems multiplied by the number of households.
Realizing family intelligence in a community is generally not too complicated to implement, otherwise acceptance and maintenance will be a big problem. Therefore, intelligent implementation in the community should be based on star connections. The personal home improvement market requires more personalized home intelligence features, but no networking requirements. Since the personal home decoration is generally driven by the decoration company, the sales that can be achieved are relatively high, so the functional requirements for the interior of the home are generally more, and the number of points achieved is correspondingly higher.
At this time, the reliability requirements of the system are accompanied by the expansion requirements. Since the wiring is not a big problem at this time, the home improvement market should adopt the star type and the bus mode as much as possible. In the old house renovation market, the wiring requirements are generally minimized. At this time, the star and bus wiring methods sometimes seem to be incapable. Therefore, the power line carrier and wireless in the old house transformation market should be the main connection method.
3. As an actual home intelligent system, the best solution should be a combination of various wiring methods. For example, security should use star connection as much as possible, and it can also be supplemented by bus or wireless. Power line carriers are difficult to use for the connection of security probes because they cannot solve the problem of signal transmission during power outages. Star connectivity is also the best solution for information cabling. Lights and controls other than information appliances such as air conditioners, rice cookers, etc. can be controlled by bus, power line, wireless or infrared.
Smart home wiring case
Take a set of four-bedroom, two-bedroom and two-guard units as an example. In the planning plan, there are 35 information points in the entire living room, 28 information panels, and several cables of various specifications.
The functions that this solution can achieve are as follows:
1. The living room, master bedroom, study room and children's room are all equipped with cable TV interface, which can watch cable TV programs separately.
2. Where there is an AV outlet, you can share a DVD player (VCR/VCD/DVD) and a satellite TV receiver at the same time. This can reduce the purchase cost of the DVD player, thereby reducing the cost of the DVD player replacement; reducing the space for the DVD player and not frequently moving the DVD player; there is also an advantage that the parent can also control the program source to prevent underage children. There is no healthy content in the room, and the content of the broadcast is controlled by the parents; in addition, satellite TV programs can be broadcast to all rooms through the audio and video system.
3. Remote control devices such as audio, DVD player, electric curtains, etc. in the living room can be controlled by the remote control receiving device of the master bedroom, the study room and the children's room. For example, you can use the remote control in the master bedroom to control the playback menu of the living room DVD player.
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