[Retracted] The Laboratory Intelligent Management System Using NB-IoT and Artificial Intelligence Technology

Table 1

Comparison of wireless transmission methods.

Name	Bluetooth	Wi-Fi	ZigBee	NB-IoT
Transmission speed	1 Mbps	11–54 Mbps	20–250 Kbps	20–250 Kbps
Transmission distance	≤10 m	≤100 m	≤200 m	≤10 km
Number of nodes	≤7	≤32	256–65000	≤200000
Deployment mode	Node	Node + gateway	Node + gateway	Node
Peak current	≤30 mA	10–50 mA	≤40 mA	≤50 mA
Overhead	Larger	Big	Small	Small
Cost	Low	Middle	Low	Low