What are the communication methods of smart home system

Issuing time:2019-04-24 20:01

When choosing a smart home, it is necessary to choose a smart home system that suits your needs. Today, let's introduce the four communication methods of smart home systems: bus, wireless, power carrier and Ethernet.

First, smart home system based on bus communication

This smart home system uses RS485/CAN/FT and other communication technologies, this kind of smart home system has strong anti-interference ability and has the advantages of stability. But its disadvantages are also obvious, node communication needs a dedicated communication line, the installation and debugging cost is high.

Second, smart home system based on wireless communication

1, with 315M/433M RF wireless communication technology:

This wireless communication technology is simple, low cost, point-to-point communication. Because of its low technical threshold and low power consumption, it is used more as an early smart home small set, and easy interference has become a greater limiting factor.

2, with ZIGBEE/ZWAVE wireless communication technology;

This wireless communication technology has the characteristics of strengthening AD hoc networking capability, multi-node, multi-channel communication, anti-interference capability and relay capability, compared with RF technology, two-way communication capability, which can feedback product status on the client side, and is gradually sought after by the smart home industry.

Third, smart home system based on power communication

The nodes of the smart home system based on power communication use the original power line to communicate with each other, using the original wire as the communication medium, and do not need to use a special communication bus like the bus. Divided into two categories by type of technology:

1, X10 power line communication technology:

It is a power line communication technology that modulates the signal at the zero crossing of alternating current, and modulates the signal at the zero crossing, which can reduce signal interference, but the disadvantage is that the communication efficiency is too low, and it can not adapt to the needs of more and more complex smart home systems.

2, PLC power line communication technology:

It is a technology of carrier modulation on power line, which adopts narrowband technology with digital signal processing technology, dual-carrier frequency technology and forward error correction technology.

Fourth, Ethernet communication smart home system

When it comes to this communication technology, it communicates directly with smartphones through WIFI, which is easy to use. The disadvantage is that it is easy to drop the line, and the application scope of the smart home system is small, and it is mostly used in the smart home single product.

These are the several intelligent device communication methods that we are familiar with, each communication technology has its own advantages, bus communication method has strong anti-interference ability, and wireless communication cost is low. In general, different methods are suitable for different scenarios, and it is good to choose according to your own needs.

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