Underground Personnel Positioning Network
Life-saving RF Mesh network in depths GPS cannot reach.
Life-saving RF Mesh network in depths GPS cannot reach. Personnel tracking and Man-Down detection in mine tunnels.
During mining accidents, the most critical issue is determining the location of trapped workers. We developed a fully RF-based positioning system since GPS signals dont work underground.
The mesh network using Zigbee and custom RF protocols provides reliable communication even under meters of rock. Each worker is tracked in real-time via wristband device.
Man-Down feature sends automatic alarm after 30 seconds of immobility. ATEX Zone 1 certified system is safe for explosive environments.
Challenge
Personnel tracking in mine tunnels where GPS cannot reach and rapid intervention in emergencies.
Solution
RF Mesh technology with ±3m accuracy positioning. Man-Down detection and 2-year battery life.
Technical Specifications
| Frequency | 2.4GHz ISM Band |
| TX Power | +20dBm |
| Network Topology | Self-healing Mesh |
| Max Nodes | 500 devices |
| Position Update | 1 second |
| Battery | 3.7V 6000mAh |
| Protection | IP68, ATEX Zone 1 |
| Man-Down | 30sec immobility |