5 methods of smart home wiring during construction

There are generally five ways for home intelligent wiring:

1. Star connection 2. Bus connection 3. Power line carrier connection 4. Infrared connection (IR) 5. Wireless (RF) connection

1. From the perspective of stability, the star connection is the most stable and reliable, followed by the bus connection, the power line carrier connection is the second, the infrared connection (IR) is the second, and the wireless (RF) connection is the worst. The traditional security system uses a star connection, so it is also the most reliable.

Although the bus connection also requires wiring, when the number of points is large, the number is less than the star connection, and its reliable line is generally acceptable. Power line carrier and wireless connection have similar problems, mainly the interference problem between adjacent households. From a technical perspective, power line carrier can use isolation and other technologies to solve the interference problem between each other. Interference is relatively difficult. Generally, it can only be solved by using frequency hopping technology. In addition to wireless and power supply problems, wireless should be a second choice in home intelligence, especially security systems.

Second, look at the problem from a market perspective. There are three markets for home intelligence: the newly built residential community market, the personal home improvement market, and the old house renovation market.

Newly built residential areas generally take communities as the unit, requiring networked alarms and information interaction. In the construction of the residential area, the requirements for wiring should not be based on whether the wiring is complicated, but on the reliability. Even if there is a problem in realizing the intelligence of a community as a whole, it is the total problem multiplied by the number of households. Realizing home intelligence in the community is generally not too complicated to implement, otherwise acceptance and maintenance will be a big problem. Therefore, the realization of intelligence in the community should be based on the star connection. The personal home improvement market requires more personalized home intelligence functions, but there is no requirement for networking. Since personal home improvement is generally promoted by the decoration company, the sales that can be achieved are relatively high, so the functional requirements within the home are generally more, and the points achieved are correspondingly more. At this time, the reliability requirement of the system is also accompanied by the scalability requirement. Since the wiring is not a big problem at this time, the home improvement market should try to adopt the two methods of star and bus. The old building renovation market generally requires the wiring as little as possible. At this time, the two wiring methods of star and bus sometimes seem to be powerless. Therefore, power line carrier and wireless should be the main connection methods in the old house reconstruction market.

3. As an actual home intelligent system, the best solution should be a mixture of various wiring methods.

For example, the security should use star connection as much as possible, and it can also be supplemented by bus or wireless. Power line carrier is difficult to use for the connection of security probes because it cannot solve the problem of signal transmission in the event of a power outage. Star connection is also the best solution for information integrated wiring. The control of lights and appliances other than information appliances such as air conditioners, rice cookers, etc. can use bus, power line, wireless or infrared.