[Retracted] Emergency Management System for Coal Mine Safety Based on IoT Technology

Table 2

Simulation results.

Time (year)	2012	2013	2014	2015	2016	2017
IoT level of coal	6	12.34	21.56	30.47	49.57	50.27
Coal safety supervision level	72.89	74.58	79.58	85.62	87.57	92.58