A Real-Time Data Monitoring Framework for Predictive Maintenance Based on the Internet of Things

Table 1

Comparison of wireless technologies.

S. no.	Standard	Bluetooth	WiFi
1	Range	Low (10 m)	High (100 m)
2	Security	Secured	More secured
3	Transmission rate	1 Mbps	Upto 54 Mbps
4	Latency	200 ms	150 ms
5	Bit rate	2.1 Mbps	600 Mbps
6	Time for network communication	10 sec	3 sec
7	Standby current	200 µA	20 µA
8	Number of nodes	7	20–250
9	Nominal TX power	0–10 dBm	15–20 dBm
10	Channel bandwidth	1 MHz	20–25 MHz
11	Application	Cable replacement	Data network and Internet monitoring