Power line Home Automation is Very Easy to Install
The carrier stream is used to exchange information through the existing power network. It is ideal for a renovation or a temporary home automation installation (for a tenant for example).
• Power line carriers use the X10 communication protocol, undoubtedly the most widely used by home automation devices.
• All you have to do is install a domestic power line box on the electrical outlets for the devices to communicate with each other, and above all to communicate with the home automation system.
However, the cost of installing PLC home automation is high compared to its performance.
• This system may experience operational disturbances when a device is disconnected from the network;
• Data transmission is not as fast as over cable or Wi-Fi.
• The carrier current can diffuse radio waves by radiation in case of high-frequency transmission, because the electrical network is not shielded, unlike home automation wiring.
Wireless Home Automation is Impressive for its Installation Possibilities
A wireless home automation network can use two different types of wireless technologies.
• By radio waves;
• By infrared (be careful, infrared rays do not pass through walls).
All your home automation devices communicate with each other through the wireless network, by equipping the electrical outlets with a special transmitter. You can remotely control all smart home controls.
Wireless home automation radio waves use different frequencies.
• Radio waves: they use the classic 433 MHz and 868 MHz frequencies (the main communication protocols use them);
• ZWave: uses the 868.42 MHz frequency and allows transmission throughout the house without risk of interruption thanks to the repercussion of information on neighboring modules;
• HomeEasy: also uses the classic 433 MHz frequency, but the information encoding allows better transmission;
• IO-HomeControl: it is a two-way communication protocol that uses frequencies from 868 MHz to 870 MHz.
Communication Protocols Do Not Allow the Same Type of Information Exchange
The home automation communication protocol (home automation standard) guarantees the connection of the various home automation devices to each other and the home automation system. They are not all compatible and do not exchange the same information. Here is a non-exhaustive list of the communication protocols most used in home automation:
• VDI network (Voice, Data, Images): it uses a classic RJ45 socket to exchange any type of information;
• Bluetooth: information exchange is limited to just a few meters;
• DSP (Digital Signal Processor): it amplifies the sound signal;
• HDMI (High Definition Multimedia Interface): transmits audio and video data digitally;
• xPL: all the equipment of the installation can communicate with each other;
• Peer To Peer (P2P): data is exchanged between two computers connected to the Internet;
• Ethernet: information is exchanged directly by the computer network;
• ZigBee: the exchange of information is done at small distances which limits energy consumption.
In addition, manufacturers of home automation equipment have recently agreed to define a standard, the KNX standard, so that all these devices can communicate with each other. The KNX home automation standard is now recognized as the international radio communication standard for home automation.