Huawei smart home plc working principle?

Through the high and low voltage isolation coupling circuit, isolate the low-frequency three-phase AC power from the low voltage of the veneer to ensure the safety of the veneer, and at the same time, provide a high-frequency path for PLC signal injection and extraction.

Through the receive link, filter and process the PLC signal extracted from the AC power line.

Via the transmit link, power amplifies the PLC signal and then injects the PLC signal into the AC power line.

Bi-directional conversion of PLC signals and RS485 signals through the PLC controller.

Through the RS485 transceiver interface circuit, the RS485 signal receiving and transmitting path is provided to realize the communication with the data collector

Huawei plc Smart Home Solution Working Principle

Huawei plc Smart Home Solution This is a mid-band power line communication technology based on HPLC/IEEE1901.1 combined with Huawei's unique technology and oriented to the IoT scenario. Carrier communication technology. Its operating frequency band ranges from 0.7-12MHz, with low noise and relative stability, and good channel quality; it adopts orthogonal frequency division multiplexing (OFDM) technology, with high band utilization and strong anti-jamming capability; and it realizes high-speed and long-distance transmission of data in the power line medium by modulating digital signals on high-frequency carriers.The communication rate of the PLC-IoT application layer ranges from 100Kbps to 2Mbps, and the transmission distance can be extended to more than 10,000 km2 through PLC-IoT application layer communication rate of 100Kbps to 2Mbps, through multi-level networking can be extended to several kilometers transmission distance, based on IPv6 can carry a wealth of Internet of Things protocols, enabling the end of the equipment intelligence, to achieve the full connectivity of the equipment.

At the same time, PLC-IoT accurately and effectively establishes the power line communication channel transmission model, determines the optimal signal transmission frequency according to the frequency selection characteristics, and obtains the channel characteristics of the power line through a large number of actual measurement data analysis. The advantages of IoT can be summarized as follows:

One, based on the open standard IPv6 technology, different types of end devices can **** enjoy the PLC network, IoT off the host side of the application and the container within the multiple applications can **** enjoy the same PLC network, independent access to their own management of the end devices without affecting each other, to enhance the concurrent capacity of the PLC network and the efficiency of communication.

Based on Huawei's new-generation station identification technology, the module automatically analyzes the transformer area to which the terminal equipment belongs through software analysis and processing based on the characteristics of the broadband carrier technology and the power grid and signal characteristics without the need for any additional equipment. By utilizing the result of disturbance-free station area identification, whitelist configuration can be exempted, thus reducing on-site configuration and enhancing equipment deployment efficiency.

Three, PLC-IoT + RF dual-mode communication using broadband power line carrier and micropower wireless communication technology fusion, in the high-frequency collection scenario, PLC-IoT and RF dual-channel parallel collection of data from different nodes, improve efficiency by about 40%. When key information is interacted, the dual channels can transmit key information at the same time, forming a redundant channel and realizing reliable communication. And when the equipment has a power failure and the PLC link is disconnected, the power failure event can be reported in time through RF communication.

Four, PLC-IoT module with bypass coupling circuit provides another escape route for PLC-IoT communication. When the power line switch is disconnected, the PLC-IoT module can continue to communicate through the bypass coupling unit to report power outage events and other important information to the IoT gateway, realizing power outage active repair, improving operational efficiency and customer satisfaction, and solving the problem of how to report the information after a power outage and handle it in a timely manner.

Fifth, PLC-IoT module combined with edge computing gateway, providing plug-and-play framework, PLC-IoT tail-end module open SDK, third-party applications through a simple function call, you can realize their own end device auto-discovery, as well as to the container of the business APP and the far-end IoT platform registration, to enable IoT gateway and the end of the device to quickly establish a business channel, and effectively solve the problem of The traditional terminal equipment on-line process is complex, installation and deployment of time-consuming problems.

PLC-IoT products:

PLC headend

"IP-based PLC headend communication module (supporting the use of the core board)

"As the central coordinator of the PLC network, responsible for the formation of PLC network

"Size: 92.62mm * 67.62mm * 24.5mm PLC miniaturized tail end

"IP-based PLC Tail End Communication Module (integrated in the end device)

"As a node of PLC network, managed by the coordinator

"Supports partners' secondary development

"Dimensions: 36mm*27mm*17.55mm (without pin) PLC standardized tail end

"IP-based PLC tail-end communication module

"As a networking node of PLC network, managed by the coordinator

"Size: 65.5mm*45.3mm*20mm IoT gateway core board

"Edge computing core board, support for virtualization and container technology

"Support for partners to develop APP application based on container

. Size: 92.6mm*80mm*13.9mm

Huawei PLC Solution

Huawei's whole-house smart host as the central control system, with stable and reliable PLC whole-house network, high-speed and full-coverage whole-house WiFi, and support for rich and expandable Hongmeng Eco2 packages, to provide distributed information management and intelligent decision-making for whole-house environments, user behaviors, and system devices. Distributed information management and intelligent decision-making, bringing users an immersive, personalized, and growable whole-scene intelligent experience.

The program configuration includes PLC hardware enabling devices + scene experience: the hardware includes, whole-house intelligent host (including whole-house Wi-Fi6+ system), as well as sensors, curtain motors, lighting drivers (including lamps), control panels, and other core PLC hardware enabling devices, the scene experience includes, pre-set 50+ scenes, which includes the first batch of Hongmeng AI scenes (ordinary). The scene is the scene set by ifttt preset conditions, Hongmeng scene is a new AI scene built with Hongmeng system), while supporting consumers to customize and expand the scene experience.

Two networks for the family, one for the whole-house home control bus network using the latest PLC technology, the whole-house PLC technology has the advantages of high maturity, high stability, high connectivity, high reliability and easy deployment. At present, it has been realized to support 2000 meters of transmission distance, easily cover up to 500 square meters of large households, Huawei laboratory tests show that the cumulative total of 1,000,000 + hours without dropping out, the communication success rate is as high as 99.99%, extreme conditions of disconnections without disconnecting; in scalability can be connected to the device up to 384, to meet the family's large number of devices to meet the needs of the expansion.

The other one for the realization of the whole house without dead angle coverage of the whole house Wi-Fi6 + wireless network, but also the advantages of home broadband solutions. Whole house Wi-Fi6+ main routing module contains 1 IPTV, 1 uplink connected to the optical cat, 1 connected to the PLC, 5 multi-room AP expansion*** 8 network ports, to achieve whole-house Wi-Fi coverage.

What is plc technology

Before we know what PLC-IoT is, we need to understand what PLC is.PLC (PowerLineCommunication) is power line communication, also known as power line network, which refers to the use of established power lines to transmit data or information by digital signal processing.

PLC does not require networking and additional communication costs, and is also very compatible with existing street light control systems. However, PLC is greatly affected by the quality of the cable and load, and has poor anti-jamming ability for signals.

PLC-IoT (PowerLineCommunicationInternetofThings) has improved PCL, PLC-IoT's anti-jamming ability is stronger, the quality of ICT is better, at the same time, digital signals can be modulated on high-frequency carriers, and the transmission distance can be extended to several kilometers through multi-stage networking to achieve data High-speed and long-distance transmission in power line medium.

Simply put PLC, that is, power line communication technology (PowerLineCommunication, PLC for short) is to power lines (low-voltage, medium-voltage or DC) as a medium, the transmission of data and information of a carrier communication method.

PLC power line communication technology realizes high-speed, reliable, real-time, and long-distance transmission of data over power lines, and is characterized by the fact that the network follows the electricity, and there is no need to additionally deploy a special communication line to access the network. Huawei's Whole-House Intelligence is a whole-house intelligent system based on Huawei's Hesse PLC-IoT chip.

The PLC-IoT system can control each device individually, or edit the scene to realize simultaneous control of different products according to the demand, and can realize linked control with each device on the HiLink platform, so that users can view and control the devices remotely or proximally through the Huawei Smart Life App.

Huawei Whole House Smart PLC vs. traditional PLC

Power carrier technology was also used more than a decade ago, and power cats like PowerCat have been using this technology.

The essential difference between the PLC technology used by Huawei Whole House Intelligence and traditional PLC technology is the use of protocols, bandwidth technology, and the type of data transmitted.

First of all, unlike the PLC technology used in routers and power cats, Huawei's Whole House Intelligence PLC-IoT is a system based on the protocol IEEE1901.1, while the router PLC is based on the technology of the protocol G.hn. IEEE1901.1 is a narrow-band technology, with a bandwidth of 1.6MHz-12MHz, which only transmits control signaling and heartbeat telegrams, and each device takes up very little bandwidth. device occupies a small amount of bandwidth; and G.hn technology belongs to broadband technology, because in the transmission of data categories above the efficiency is completely different, the traditional PLC technology, the transmission of data services, occupying a large amount of bandwidth resources, so in use may be subject to noise interference from other appliances, resulting in transmission rates have jumped, in some of the scenes of large interference, it will affect the use of experience, that is, usually say the "out of order", and its usually used in open environments without isolators and other measures, vulnerable to interference.

Huawei Whole House Intelligence's PLC-IoT system is connected to the home circuit as an independent loop, and in order to reduce the noise generated by blocking traditional home appliances and equipment, a filter is installed on the independent loop to block out the interference of traditional home appliances on smart furniture equipment, so as to achieve the demand for stability and safety.The PLC loop can support up to 384 devices. Smart home PLC technology is a mature technology that is widely used in industrial scenarios such as power grids and street lights, and the stable communication distance can be as high as 2KM.Huawei applies this technology to home scenarios, and the connection stability of devices can be guaranteed.

What is Huawei PLC

PLC is just a technology route, and ZigBee, SigMesh, and even traditional bus technology, it is a technology route only, until now, ZigBee and SigMesh has not been divided into a high and low, there are also short, PLC to join the fray to the traditional bus technology also put together! This is something that ZigBee and SigMesh can't do.

PLC has already verified its own "wide-area" application value in remote meter reading and street light monitoring, which is almost unattainable by all other technology routes. Huawei's ambition lies in the true Internet of Everything, of which the smart home is only one part. The PLC can almost simultaneously meet the wide-area intelligent interconnection and home intelligent interconnection application, and can take into account the rapid transformation and re-establishment of two types of business applications, so it is a "roughly correct" direction, the remaining problem is only the maturity of the technology and application, as well as cost-effective.

Another very important element that is not usually on the table is standards, which are not only a matter of interest, but also, as with 5G, a matter of national and societal security, in the words of the Stars and Stripes, as well as the protection of the privacy of the family and the individual.

If ZigBee, SigMesh, KNX and PLC can achieve basically the same interconnection and intelligent effect, cost-effective will not be too big a difference, in the field of social public **** and large-scale family applications, PLC will become the first choice, which is a comprehensive social demand.

Giant enterprises do standards and capital, large enterprises do strategy and tactics, medium-sized enterprises do business and channels, small enterprises do products and technology, the center of gravity is not the same, the goal is not the same, the result is certainly not the same.

PLC has at least three factors that meet Huawei's demand for technology route selection in smart connectivity: 1) coverage of application areas; 2) new standards development; and 3) seamless combination of wired and wireless.

On this basis, Huawei emphasizes the HiLink system, and does not completely exclude the integration of other types of intelligent technology, such as SigMesh, is also promising to integrate into Huawei's intelligent interconnection system.

HiLink is the root system, Wi-Fi is the backbone, PLC and SigMesh and a number of other potentially integrated intelligent interconnection technology is the branch, smart speakers routing gateway switch panel socket is the green leaves, the terminal application products is the blossoming results. Huawei plc smart home program this system can make the reality closer to the ideal smart life, think back then this design will only appear in science fiction stories, movies, like a home, automatically open the curtains, open the floor heating, the lights to the right brightness, anyway, want to achieve what function, directly buy a function of home appliances access to this whole-house intelligent system can be.