What are the solutions for wireless smart home?

At present, the application of IOT smart home is extremely diverse, and different wireless connection technologies need to be flexibly matched at the initial stage of design. This paper will analyze in detail which wireless modules can be used in IOT smart home applications from the perspective of wireless module solutions.

Smart Home Solutions Based on WiFi Technology

The advantage of WiFi scheme is that the technology is mature, and it can be independently designed to access the public network, and the cost is relatively low. The disadvantage is that WiFi devices consume a lot of power and cannot meet the power supply demand. The number of accesses is also relatively limited, and a home router can only access 32~64 devices; It is impossible to build a complex network, and the coverage ability is seriously limited by the deployment of routers. WiFi scheme has great advantages in the initial stage of the Internet of Things. A single module can rely on routers to access the network, which has obvious advantages. Although the number of access is small, it can meet most of the needs without the widespread popularization of the Internet of Things and furniture. 802. 1 1ac may alleviate the defects of WiFi scheme to some extent, but the popularization of this technology still needs a long way to go. It is suitable for some products that do not need obvious power consumption and will not be deployed in large quantities, such as smart rice cookers, smart air conditioners, smart lamps and other traditional furniture.

Selection of smart home WiFi module: According to the actual needs of the product, select the communication interface, data rate, transmission rate, transmission distance, chip, package size, power supply, antenna and frequency band of the WiFi module.

Smart Home Solution Based on Bluetooth Technology

The advantages of Bluetooth scheme are low power consumption and simple interaction with mobile phones. At present, Bluetooth has the advantages of power consumption and easy interaction with mobile phones, but the disadvantage is that devices cannot access the network independently. With the popularity of Bluetooth 5.0 and Bluetooth mesh, Internet of Things applications based on Bluetooth modules have mushroomed. Suitable for smart door locks, smart weighing scale, smart toothbrushes, mesh light control, smart lighting, smart buildings and other products that need power consumption and direct interaction with mobile phones.

Selection of Bluetooth module in smart home: Understand the application scenario of Bluetooth solution, the functions to be realized (application block diagram), and the interfaces that can be called in the process of function realization (master-slave devices, functions). Consider module power supply, size, receiving sensitivity, transmission power, Flash, RAM, power consumption (broadcast, continuous transmission, deep sleep, standby state), connection distance, interface, antenna, cost performance, etc.