How to Choose Wifi Module and Bluetooth Module in Smart Home?

With the continuous development of social technology, Bluetooth modules and WiFi modules are more and more widely used in smart homes. The reason why the smart home is smart is actually the module technology, so which one is better to choose a wifi module or a bluetooth module? Before choosing, let's understand the concept and difference between WiFi module and Bluetooth module

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The concept of WiFi module and Bluetooth module

WiFi module: A collection of integrated Wi-Fi chips, code programs, basic circuits, devices for transmitting and receiving radio signals, they come in all shapes and sizes, and are designed to connect to wireless networks and transmit data through radio waves, making devices able to communicate with each other and access the Internet.

Bluetooth module: a collection of integrated Bluetooth chips, code programs, and basic circuits, capable of mesh networking and data transmission, mainly to complete data exchange between devices.

How to choose wifi module and bluetooth module for smart home?

1. Power consumption

The transmission power and standby power consumption of the Bluetooth module are lower than that of the WiFi module. In the standby state, sharing with one device, the WiFi module consumes an average of 10% of the power for one hour, but the power consumption of the Bluetooth module is 1/3 of that of WIFI.

2. Security

The Bluetooth module also provides two layers of password protection, while the security risk of the WiFi module is the same as that of other networks. Once someone obtains partial access rights, he can enter the entire network. In terms of security, the Bluetooth module is superior to the WiFi module.

3. Communication distance

The effective distance of the traditional Bluetooth module is about 10 meters, and the maximum distance of the Bluetooth module can reach 150 meters; the effective distance of the WiFi module is generally 50-100 meters. Therefore, in terms of distance, the effective distance of WiFi is better than that of traditional Bluetooth!

4. Cost

The Bluetooth module is smaller in size and lower in cost than the WiFi module.

5. Mutual interference

The Bluetooth module has stronger anti-interference ability, especially for WiFi and LTE signals, which can avoid "signal jam" in a limited space to a certain extent, and the mutual interference is lower than that of the WiFi module.

6. Transmission speed

Due to the low power consumption design of the Bluetooth module, the biggest disadvantage is that the transmission speed is about 1 ~ 3Mbps. Compared with the WiFi module, which can use 2.4GHz or 5GHz, the fastest 72 and 150Mbps at 20 and 40MHz bandwidth, there is a clear gap between the two speeds. Therefore, the transmission speed of Bluetooth 5.0 is not suitable for video or large file data transmission. So at this point, the function of WiFi is better than the Bluetooth module!

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Summarize

Compared with other wireless modules, the biggest feature of Bluetooth module is low power consumption. It has high popularity in smart devices, wide application, low cost, large output, easy to use, point-to-point, and its disadvantage is that the speed is very slow and the distance signal is limited. The advantage of the WiFi module is that it is fast, one-to-many, multiple people can connect, and the distance is long. The high-power router can cover 100 meters through the wall.

From the comparative analysis of multiple dimensions, it is not difficult to find that the WiFi module and the Bluetooth module actually have their own unique advantages and characteristics. Although the WiFi module is superior to the Bluetooth module in the convenience of networking, transmission rate, and transmission distance, the Bluetooth module is superior to the WiFi module in terms of data stability, security, and convenience of networking. Therefore, before choosing a suitable module, we still have to choose a suitable module according to our own needs and product positioning.

Wireless communication technology high-speed development of the Internet of Things era, the actual realization of people and things, things and things of information exchange and communication. we only need to install an excellent smart terminal product (smart LED lights, smart led light controller) on the smartphone supporting the App, you can achieve a variety of built-in wireless module of the smart home product comes with the function control through the touch screen.

Smart control, most of them are realized through wireless communication technology. Wireless communication modules that can realize smart control are WiFi module, Bluetooth module and WiFi+Bluetooth combination module, which have a common characteristic, that is, they are all UART serial IoT modules.

Smart socket, smart light bulb, smart light strip… … More and more smart devices and smart products realize the communication and dialogue between people and objects, objects and objects with each other through WiFi module and Bluetooth module. Smart devices and smart products that end users can set up and control remotely through their cell phones enhance people’s life experience in all aspects.

Users read the status data of the devices through cell phones in wireless form and combine their actual needs with wireless networks to send commands to the UART serial IoT modules (WiFi module / Bluetooth module / WiFi+Bluetooth combination module) in the built-in home appliances to complete actions, such as the on and off of smart light bulbs and the switch of smart door locks.

Working Mode

WiFi module

1. The WiFi module works in STA mode. The smart terminal (smartphone, tablet) and WiFi module work in the wireless network environment provided by the wireless router. The data signal is forwarded by a wireless router, thus realizing wireless control.
2. The WiFi module works in AP mode. The smart terminal (smartphone, tablet) directly accesses the network provided by the WiFi module, and wireless control is realized in the same hotspot network.
3. Remote control, the intelligent terminal (smartphone, tablet), and wireless router are in different networks, and WiFi module is responsible for uploading relevant data to the server, at this time, the communication between the intelligent terminal and serial WiFi module electronic devices are forwarded through the server to realize remote control.

Bluetooth module

Bluetooth module and intelligent devices to establish communication, the user through the corresponding smartphone APP, connected to Bluetooth, you can send commands to the smart devices through Bluetooth, and then to achieve the implementation of control commands.

WiFi+Bluetooth combination module

The WiFi part of the WiFi+Bluetooth 2-in-1 module is responsible for uploading relevant data to the cloud for remote control or connecting to the home router for home control. The Bluetooth part is responsible for collecting data and transmitting relevant information to WiFi. Users can achieve intelligent control through their smartphones, whether at home or on their way home.

Classification of smart modules.

WiFi module: built-in wireless network protocol IEEE802.11b.g.n protocol stack and TCP/IP protocol stack wireless module belong to the IoT transmission layer.

Bluetooth module: wireless module with built-in wireless network protocol IEEE802.15.4 protocol stack, designed for wireless 2.4GHz ISM high-speed rate transmission. Mainly used for short-range data interaction, its low power consumption, cost-effective, low latency and other characteristics, but its disadvantages still can’t be ignored, due to its data transmission rate of 1Mbps/2Mbps, it can’t transmit large data content, so in wearable devices, virtual and augmented reality, smart home and industrial and IoT devices are extremely widely used.

WiFi + Bluetooth combination module: integrated WiFi, Bluetooth are two kinds of communication module products. Users can both through the WiFi part to achieve data transmissions and through the Bluetooth part to achieve data transmission and intelligent control.

Thanks to the advantageous characteristics of low power consumption and low cost, Bluetooth modules are more and more widely used in the field of intelligence, such as Bluetooth light bulbs, Bluetooth LED controllers, etc. At the same time, to optimize the IoT smart home user experience, 2.4G WiFi + Bluetooth two-in-one combination module is the best solution for the current smart home WiFi signal interference.

WiFi+Bluetooth combination module can easily and quickly develop embedded wireless application products, shorten the development cycle, suitable for IoT simple data collection and processing, remote control, and more IoT intelligent products and devices are used. For example, we have developed a WiFi+Bluetooth combination LED controller.

We are a professional manufacturer of LED controllers in China, providing you with one-stop intelligent solutions. If you have any inquiries, please contact us to arrange a consultation.

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