Research Article

Safety Management System Prototype/Framework of Deep Foundation Pit Based on BIM and IoT

Table 2

Characteristics comparison of position-tracking technologies.

TypesAccuracy (m)Penetrating capabilityAnti-interferencePowerCommunication distance (m)Cost

RFID1–8WeakWeakLow5Low
Zigbee3–10WeakWeakLow70Moderate
UWB0.1–0.15StrongStrongLow200High
GPS3–5WeakStrongHigh50–100High
WiFi3–10WeakStrongHigh30–50High
Infrared5–10WeakWeakHigh5Moderate
Bluetooth3–5StrongWeakLow10Moderate