Shenzhen Wudi Microelectronics Co., Ltd

Many friends are not familiar with power line communication. If you are interested in issues related to power line communication, please continue reading on. Power Line Communication PLC Also known as power line carrier communication, it refers to the technology of using power lines to transmit analog or digital signals through carrier waves. It is a unique communication method in the power system. The biggest advantage is that there is no need to rewire, and multiple services such as data, voice, and video can be carried and implemented on existing wires. Four in one end users only need to plug in the power plug to achieve internet access, TV channel reception of programs, making phone calls, or video calls.

What are the classifications of power line communication? The classification of power line communication can be carried out from two aspects: firstly, from the perspective of occupying frequency bandwidth,

Secondly, from the perspective of communication rate implementation:

1. From the perspective of occupied frequency bandwidth, it can be divided into narrowband PLC and broadband PLC. The carrier frequency range of narrowband PLC varies in different countries and regions, with the United States ranging from 50 to 450kHz and China ranging from 40 to 500kHz. The carrier frequency range of broadband PLC is 4-500kHz in the United States, mainly used indoors; In Europe, it is 1.6-10MHz and 10-30MHz, which is the ETSI standard, and the boundary point of the CENELEC standard is 13MHz.

2. From the perspective of communication rate implementation, it can be divided into low-speed PLC and high-speed PLC, generally with a line speed of 2Mbit/s.

3、 What are the applications of power line communication

1. There are various forms of PLC application. For example, when commercial advertisements appear on digital television, product information can be downloaded to a computer through a power line. Afterwards, the computer can also send ordering information to suppliers or browse product web pages to obtain more detailed information. Music or video programs can also be recorded through the power line. When playing music on TV or on a music channel, the music can be directly recorded to an MP3 player through the power line, or the digital video can be directly recorded into a PC or digital video recorder. Furthermore, refrigerators can order food through power lines based on the inventory situation inside the refrigerator, and microwaves can send expected environmental temperature changes to the air conditioner, allowing it to readjust its temperature and maintain a comfortable room temperature.

2. The application of PLC is not limited to new information appliances. As a home network, PLC is very convenient for exchanging data between traditional data processing devices (such as PCs) and computer peripherals. In addition, information appliances can also have conversations with computers, and using a PLC can easily send multimedia data from a TV or VCR to a PC. PLC can also be used for home safety, which can send images obtained from the surveillance camera at the entrance to the TV.