Research Article
Safety Management System Prototype/Framework of Deep Foundation Pit Based on BIM and IoT
Table 2
Characteristics comparison of position-tracking technologies.
| | Types | Accuracy (m) | Penetrating capability | Anti-interference | Power | Communication distance (m) | Cost |
| | RFID | 1–8 | Weak | Weak | Low | 5 | Low | | Zigbee | 3–10 | Weak | Weak | Low | 70 | Moderate | | UWB | 0.1–0.15 | Strong | Strong | Low | 200 | High | | GPS | 3–5 | Weak | Strong | High | 50–100 | High | | WiFi | 3–10 | Weak | Strong | High | 30–50 | High | | Infrared | 5–10 | Weak | Weak | High | 5 | Moderate | | Bluetooth | 3–5 | Strong | Weak | Low | 10 | Moderate |
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