Health Monitoring System with Hybrid Laser Sensor Networks and Cloud Computing for Subway Tunnels

Table 5

Measured value of the cable convergence instrument.

Loading method	Convergence meter data (m)
	No. 2	No. 4	No. 6
Initial state	0.996	0.996	0.881
Loading point 1 50 N	0.993	0.992	0.870
Loading point 1 100 N	0.991	0.991	0.863
Loading point 2 50 N	0.990	0.995	0.878
Loading point 2 100 N	0.985	0.994	0.875
Loading point 3 50 N	0.995	0.990	0.875
Loading point 3 100 N	0.993	0.986	0.871