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Table 1 Comparative analysis of terminal access methods

From: Alarm method of communication intelligent manhole cover based on multiple event fusion

Web platform IoT cloud platform
Heartbeat packets every 2 min and waste resources The terminal does not send the heartbeat packets and only one business interaction within 24 h is required, save the power consumption
The network congestion and packet loss for the massive device access It can avoid the congestion and improve the reliability of the IoT systems
There is no asynchronous execution between web platform and terminal, increase the overhead and decrease the efficiency It can cache the commands and wait for the results, issue the commands by the aware of the terminal state and ensure the reliability