Research Article
Health Monitoring System with Hybrid Laser Sensor Networks and Cloud Computing for Subway Tunnels
Table 1
Features of various deformation monitoring technology.
| Method | Efficiency | Precision | Application scope | Cost | Real-time monitoring | Interaction |
| Automated close-range photogrammetry [13] | Normal | Normal | Section | Normal (60–180 RMB/m) | Yes | No | Measuring robot [14] | Relatively high | Relatively high | Section, critical area | Normal (75–250 RMB/m) | Yes | No | Automatic hydrostatic leveling system [15] | High | Relatively high | Only settlement | Relatively high (376–450 RMB/m) | No | No | Bassett convergence system [16] | High | Poor | Medium section, critical area | Extreme high (1592–2062 RMB/m) | No | No | SOFO and FBG optical fiber [17,18] | High | High | Section, critical area | Normal (190–250 RMB/m) | No | No | Intelligent monitoring and early warning system | High | Relatively high | Section, critical area | — | Yes | Yes |
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