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Advantages of zigbee in smart home applications
The IoT smart home system is the product of the perfect combination of smart home control technology and IoT technology. The zigbee wireless smart home system wirelessly includes smart switches, smart sockets, wireless infrared repeaters, curtain controllers, wireless infrared intrusion detectors, door sensors, smoke alarms, video surveillance and other smart home systems through mobile phones. The devices are connected into a completely two-way network, which we can also call the Home Internet of Things. Since this network fully complies with the Zigbee protocol standard, it also inherits the inherent advantages of Zigbee network, such as high reliability, strong security, fast response, networking automation, automatic diagnosis and recovery of system failures.
reliability
ZigBee adopts a collision avoidance mechanism, and each sent control command or transmitted data is confirmed by the receiver and replies with a confirmation message. If there is no reply from the confirmation message, it means that a collision has occurred and will be transmitted again, so that the transmission of system information becomes very reliable. At present, the general wireless smart home system is based on 315M/433M radio frequency for one-way data transmission. Since there is no feedback from the receiver’s confirmation information, these wireless smart homes will often fail in control under the condition of interference, and the system reliability is very poor. .Zigbee-compliant wireless smart home systems can completely solve the fatal flaw of control failure
robustness and scalability
A ZigBee network can include up to 65536 network device nodes. These network nodes can automatically form a mesh network, and newly added nodes are automatically added to the network. In this way, the system can be extended almost infinitely, and this extension is also very simple. Therefore, the minimum system of the IoT sensing smart home system can be simplified to one host and one socket, and users can experience the IoT smart home system at a very low cost. After the experience, users can customize their own smart home system according to their own needs. The general wireless smart home system needs to go through the “code” to control the home equipment. “Code pairing” is actually a process of manually establishing a communication connection path between the host (or the controller) and the device (or the controlled party). This process is very cumbersome and error-prone, and it is impossible for non-professionals to do it. . The IoT sensing smart home system realizes the automatic networking of the system without any “pairing code”. Moreover, since the system is a mesh network, that is, the sockets and other devices of the system can be used as routers to play the role of data and command transmission relays. The system automatically and dynamically selects the communication route to transmit data and commands. Even if a certain device fails, the system will automatically identify the faulty device and re-select the communication line to ensure normal communication of the entire system. In conclusion, the IoT Sensing Smart Home is a very robust and easily scalable system.
safety
ZigBee provides data integrity check function to prevent attackers from modifying data; provides authentication function to prevent attackers from modifying and imitating Zigbee devices; adopts 128bits AES encryption algorithm to prevent data from being intercepted; these measures determine the security of Zigbee network.
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