OFweek smart home network smart home communication technology is divided into wired and wireless. The main wireless technologies are: zigbee, z-wave, Bluetooth, wifi, RF, EnOcean, UWB.
Zigbee
Transmission distance 50-300M, speed 250kbps, power consumption 5mA, the maximum number of network nodes up to 65000.
Its characteristics are close range, low complexity, self-organization, low power consumption, and low data rate. The biggest feature is the ad hoc network. Mainly suitable for the field of automatic control and remote control, can be embedded in various devices.
Z-wave
The main players are interconnection, standardization, and strict auditing.
Z-Wave is a wireless networking specification dominated by the Danish company Zensys. Although the Z-wave Alliance is not as strong as the ZigBee Alliance, Z-wave Alliance members are already manufacturers of existing products in the smart home area. The alliance has already With more than 160 internationally renowned companies, the scope basically covers all countries and regions in the world.
Bluetooth
It is a wireless technology standard that enables short-range data exchange between fixed equipment, mobile equipment, and personal area network of buildings (using UHF radio waves in the ISM band of 2.4 to 2.485 GHz). Bluetooth can connect multiple devices, overcoming data synchronization problems. Transmission distance 2-30M, speed 1Mbps, power consumption between zigbee and WIFI. Mainly used in some small smart hardware products.
Wifi
It is a technology that allows electronic devices to connect to a wireless local area network (WLAN), typically using 2.4G UHF or 5G SHF ISM radio frequency bands. Is currently the most widely used wireless communication technology, transmission distance 100-300M, speed up to 300Mbps, power consumption 10-50mA.
RF
It is a non-contact automatic identification technology. Compared with the traditional magnetic card and IC card technology, it has the characteristics of non-contact, fast reading speed, no wear, no environmental impact, long life, easy use and anti-collision function, and can handle multiple cards at the same time. Wireless radio frequency technology conducts non-contact two-way data transmission between the reader and the RF card to achieve target identification and data exchange.
EnOcean
The world's only wireless international standard that uses energy harvesting technology. Passive wireless communication standard. The EnOcean energy harvesting module can collect the energy generated by the surrounding environment and is used to supply EnOcean's ultra-low power wireless communication module. Compared with similar technologies, it has the lowest power consumption and the longest transmission distance. It can be networked and supports functions such as relaying. Without batteries, the power required for wireless signals is 1/30 to 1/100 of that of ZigBee. Mainly used in some wireless passive smart home and smart building products.
UWB
It is a carrierless communication technology that uses nanosecond to picosecond non-sinusoidal narrow pulses to transmit data. By transmitting very low-power signals over a wide spectrum, UWB can achieve data transfer rates of hundreds of Mbit/s to several Gbit/s in a range of about 10 meters. Strong anti-interference performance, high transmission rate, large system capacity and very low transmission power. Low transmit power greatly extends system power operation time. The impact of electromagnetic radiation on the human body will also be very small, with a wide range of applications.
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