We will introduce Bluetooth and WiFi connection technologies in more detail and compare them based on the most important features in commercial and industrial IoT applications.

Bluetooth technology

Bluetooth technology Definition

Bluetooth technology is a low-power wireless solution operating on the 2.4 Bande de fréquence de l'ISM GHZ. Au fil des ans, La technologie Bluetooth a continué de se développer, and now it has great flexibility in terms of distance, bande passante, and communication topology, which can meet the needs of different IoT applications.

Bluetooth technology Technical Details

Il existe actuellement deux options de radio Bluetooth différentes: Bluetooth Classic et Bluetooth Low Energy (Bluetooth le). Bluetooth classique (ou br / edr), La radio Bluetooth originale, est toujours largement utilisé dans les applications de streaming, especially audio streaming.Module Bluetooth à basse énergie is mainly used for low-bandwidth applications where data is frequently transmitted between devices. Bluetooth Low Energy est connue pour sa consommation d'énergie extrêmement faible et sa popularité dans les téléphones intelligents, tablettes et ordinateurs personnels.

Bluetooth Low Energy est divisée en point à point, star, mesh and broadcast topologies. Dans la topologie en maille, the nodes are directly connected without communicating with other nodes through the hub. Les nœuds peuvent envoyer des données et des informations à d'autres nœuds en dehors de la plage de communication du nœud source d'origine, expanding the network coverage in a large area.

Bluetooth technology Application

Bluetooth Low Energy is most commonly used in medical and fitness equipment, smart lighting systems, real-time positioning systems, and indoor navigation applications.

Wifi technologie

Wifi technologie Definition

Wi-Fi is the brand name of all IEEE 802.11 Réseaux de zone locale sans fil standard (Wlan). La bande de fréquence de travail du Wi-Fi est généralement 2.4 Ghz et 5 ISM GHZ, Mais les versions plus récentes du Wi-Fi utilisent également d'autres bandes de fréquences.

Wifi technologie Technical Details

Il existe de nombreuses versions de Wi-Fi. L'alliance Wi-Fi a récemment adopté un nouveau système de numérotation de version: Wi-Fi 1 (802.11b), Wi-Fi 2 (802.11un), Wi-Fi 3 (802.11g), Wi-Fi 4 (802.11n, Wi -fi 5 (802.11CA) et Wi-Fi 6 (802.11hache). La dernière version peut répondre aux besoins de diverses applications, including longer distance, débit plus élevé et couverture plus grande.

The most popular topology for Wi-Fi is the star topology. Mais dans la topologie des étoiles, Les nœuds ne peuvent communiquer entre eux que par le moyeu.

Wifi technologie Application

Wi-Fi is mainly used for large file transmission and data transmission applications with high bandwidth, such as video streaming.

In IoT applications, Wi-Fi is most commonly used for devices that need to directly connect to the Internet. But it usually cannot meet the low power consumption requirements, and it is rarely used in applications and devices that need to run on micro batteries for a long time.

Bluetooth VS WiFi technology Comparison Table:

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