Is Zigbee wireless connection or Wifi better?

1. The transmission distance, rate, and power consumption are different.

Bluetooth: The transmission distance is 2-30m, the rate is 1Mbps, and the power consumption is between Zigbee and WiFi.

WiFi: The transmission distance is 100-300m, the rate can reach 300Mbps, and the power consumption is 10-50mA.

Zigbee: transmission distance 50-300M, rate 250Kbps, power consumption 5mA.

2. The scope of application is different.

Bluetooth: Communications, Automotive, T, Multi**, Industrial, Medical, Education, etc.

WiFi: Wi-Fi, PC, PDA.

Zigbee: Mainly suitable for automatic control and remote control field, it can be embedded in various devices.

3. The characteristics are different.

Bluetooth: Simple GFSK modulation with extremely low operating and standby power consumption, even years of continuous operation with a single coin cell battery.

WiFi: The transmission speed of WiFi is very fast, and the radiation of health and safety WiFi products is small.

Zigbee: Short range, low complexity, self-organization, low power consumption, low data rate, low cost.

Zigbee is a standards-based, low-power LAN networking protocol.

There are requirements for the file format of Bluetooth transmission, such as mobile phone to tablet, many formats are not supported.

WiFi is compatible with all file formats.

Both Zigbee and Bluetooth are a short-range ZD off-the-road transmission.

1. WiFi, WiFi is currently the most widely used wireless communication technology, the transmission distance is 100-300m, the rate can reach 300Mbps, and the power consumption is 10-50mA.

2. Zigbee, transmission distance 50-300m, rate 250kbps, power consumption 5mA, the biggest feature is that it can be self-organized, and the number of network nodes can reach up to 65,000.

3. Bluetooth, transmission distance 2-30m, rate 1mbps, power consumption between zigbee and wifi.

These three wireless technologies, in terms of transmission distance, are WiFi> Zigbee > Bluetooth; In terms of power consumption, it is wifi >bluetooth" zigbee, and the latter two can be powered by batteries only; In terms of transmission rate, it is wifi> zigbee > bluetooth.

At present, the advantage of WiFi is that it is widely used and has been popularized to thousands of households. The advantages of Zigbee are low power consumption and ad hoc networking; The advantage of the power carrier is the transmission rate; The advantage of Bluetooth is that it is easy to network. However, these three technologies also have their own shortcomings, and none of them can fully meet all the requirements of smart home.

In terms of transmission rate, it is wifi >bluetooth" zigbee.

1. From the perspective of networking, Zigbee has always been proud of its strong networking capabilities, a gateway can theoretically connect tens of thousands of devices, and can mesh networking, Bluetooth 2016 technical route will also be mesh networking as the development direction.

For users, it is still necessary to configure the device when using these protocols for the first time, and although the configuration is not complicated, it will still cause more or less trouble for users. As a wide area network, as long as the device that supports the network protocol can directly access the corresponding network, no need to manually configure, just like a mobile phone, you can access the network when you turn on the phone, improving the user experience.

2. The advantages of the two are different: in the modern temperature control system, the Zigbee technology of wireless communication can be easily established, the mesh network supported by Zigbee can maximize the invulnerability of the network, and the use of chip relay transmission can maximize the coverage of the network. Writing different control programs to the Zigbee chip can control the time and duration of the heater.

Zigbee is less complicated, the protocol stack is smaller than Bluetooth, and Zigbee has a faster and shorter connection time. Zigbee devices are in sleep mode most of the time with a duty cycle of less than 1. They wake up, receive data to see if the channel is clear, transmit data, and then go back to sleep, and the battery lasts for years.

Although many people in China have begun to pay attention to the new technology of Zigbee, and many enterprises have begun to get involved in the development of Zigbee technology, however, considering that Zigbee itself is a new system integration technology, the development of application software must be combined with network transmission, RF technology and underlying software and hardware control technology, so it has a certain technical difficulty for enterprises in the initial development. Due to various constraints, the large-scale commercial application of Zigbee technology is still taking time.

1、 zigbee：

2、wi-fi：

Wi-Fi is a technology that allows terminals such as PCs and handheld devices (such as PDAs and mobile phones) to be wirelessly connected to each other. Wi-Fi is a brand of wireless network communication technology owned by the Wi-Fi Alliance. The aim is to improve interoperability between wireless network products based on IEEE standards.

Differences:1The transfer speed is different:

The transmission speed of Zigbee is not high (<250kbps), but the power consumption is very low, and it can generally be used for more than 3 months when powered by batteries;

WiFi, which is often referred to as wireless LAN, has a large rate (11Mbps), large power consumption, and is generally connected to an external power supply;

2.Different applications:

Zigbee is used in low-rate, low-power applications, such as wireless sensor networks, and is suitable for industrial control, environmental monitoring, smart home control, and other fields.

WiFi is generally a wireless network technology (with a coverage range of about 100 meters) that covers a certain area (such as 1 building). The manifestation is the wireless router that we commonly use. There is a wireless router in one building, and the laptop computer (with wireless network card) in the building can basically be used for wireless Internet access.

Zigbee is a short-range, low-power, low-cost, low-complexity communication method.

Zigbee is a standards-based, low-power personal area network protocol. The technology specified under this protocol is a short-range, low-power wireless communication technology. This name is derived from the bee's figure-of-eight dance, which is due to the fact that the bee relies on the "dance" of flying and shaking its wings to transmit information about the location of the pollen to its companions, which means that the bee relies on this way to form a communication network in the group.

It is characterized by short proximity, low complexity, self-organization, low power consumption, low data rate, and low cost. It is mainly suitable for automatic control and remote control, and can be embedded in various devices. In short, Zigbee is a cheap, low-power short-field wireless networking technology.

If you also have Zigbee modules installed in your computer or mobile phone, then they can transmit data to each other with the Zigbee gateway, but the Zigbee transmission data rate is relatively low, only 250KBs in the frequency band, and this is only the rate on the link, excluding the consumption of channel contention response and retransmission, the rate that can really be used by the application may be less than 100KBS. And the remaining speed may have to be divided by multiple applications adjacent to multiple nodes and the same node, so even if you can access the Internet, it will compare cards, which is even more unsuitable for things like watching.

So now Zigbee technology is mostly used in sensing and control, mainly in the following fields:

Home and building networks: temperature control of air conditioning systems, automatic control of lighting, automatic control of curtains, gas metering control, remote control of household appliances, etc.

Industrial control: automatic control of various monitors and sensors.

Business: smart labels, etc.

Public places: smoke detectors, etc.

Agricultural control: Collect a variety of soil information and climate information.

Medical: emergency callers and medical sensors for the elderly and people with reduced mobility, etc.

Of course, it is not excluded that in the future, the Zigbee gateway will be added to the function integration of wifi, cable TV, and network TV, so in the future, families only need a Zigbee gateway to realize smart home control, Internet access, watching TV and other functions.

The technical parameters of the wifi solution and the zigbee solution and the radio frequency can be clearly seen in the above figure, and I will talk about the difference between the two in detail.

Let's talk about the difference: Zigbee can be understood as the most basic single-chip microcomputer + advanced wireless communication protocol. The wireless communication protocol is.

It has the advantage of self-organizing networking, with a maximum number of network nodes up to 65,000, which is very conducive to environmental surveys and other work, such as airplanes flying over a forest, scattering tens of thousands of nodes from the sky, and then you can return to the computer to observe the data. Zigbee is proposed for sensors with low data volume, so there are many possible applications of Zigbee in industry; In the smart home, some people have also proposed many possible applications, such as smart xx, that is, to connect several electrical appliances using Zigbee wireless network, so that the electrical appliances have the ability to perceive the environment, so as to take corresponding measures in different situations. At present, Zigbee is also the mainstream wireless smart home technology solution in China, and domestic Xiaomi, Haier, and Oribo are all using Zigbee solutions.

WiFi is proposed for wireless access networks, this alliance has become a household name, and many electronic devices in daily life are marked with the word WiFi. WiFi is a consortium of high-speed, high-stability radio access network solutions, and the wireless communication protocol is. Its main problem is wireless access, which is different from Zigbee in that its requirements are high speed and large capacity; WiFi does not have the ability to organize the network, so it needs to be set manually.

To put it simply, the two applications are different, and generally Zigbee is used for ad hoc networks and automatic control. Whereas, WiFi is used in human-controlled wireless access networks.

1. The transmission speed is different. Zigbee's transmission speed is not high (250kbps), but the power consumption is very low, and it can generally be used for more than 3 months when using battery power. WiFi, which is often referred to as wireless LAN, has a large rate (11Mbps), large power consumption, and is generally connected to an external power supply;

2. Different application occasions. Zigbee is used in low-rate, low-power occasions, such as wireless sensor network splitting networks, and is suitable for industrial control, environmental monitoring, smart home control and other fields. WiFi is generally a wireless network technology used to cover a certain range (coverage range of about 100 meters).

The form of performance is a commonly used wireless router. One wireless router is installed in one building, and most of the laptops in the building can be connected to the Internet wirelessly.

3. The current situation of the market is different. As an emerging technology, Zigbee is in the process of rapid development and promotion since the first version of the standard was released in 04, and has not yet been promoted on a large scale due to cost and reliability reasons. WiFi technology is much more mature, and there are many applications.

Generally speaking, the difference between the two is quite large, the market positioning is different, and the competition between them is not very large. It's just that the two have something in common in technology, and the mutual interference between the two is still relatively large, especially the interference of wifi to Zigbee.