The MDT-RTU is part of the MineTrax Wireless Network from Newtrax Technologies. It is capable of acquiring data from up to 3 SMART instruments and runs on batteries for 3 years.  The MineTrax system deploys in a matter of hours instead of days or weeks like typical wired systems.  Contact MDT to help you design a full instrumentation program that is monitored wirelessly and sends data to your desk on surface.

Highlights:

- Can connect up to 3 SMART instruments to one wireless unit

- Data acquisition is completely wireless and battery-powered

- Also acts as a standard infrastructure/repeater node for the MineTrax network

- Provides both mobile access and backhaul routing functionalities

Minetrax Networking

RF front end:

• 902-928 MHz
• NMO antenna connector
• +3dBi omnidirectional antenna
• TX radiated power: -1 dBm up to +14 dBm
• RX sensitivity: -105 dBm
• 64 x 200 kHz channels
• Typical omnidirectional range in underground mines: 50 m to 150 m depending on antenna placement, tunnel dimensions and curvature, obstructions and rock type
• Typical omnidirectional range on surface: 50 m to 600 m depending on antenna placement and obstructions

Mesh networking protocol:

• 16-bit network address
• Ad hoc self-organizing and self-healing
• Routing capability: any-to-any unicast, broadcast, and to/from Central Server via nearest Gateway

Spread spectrum protocol:

• TDMA / FHSS
• Synchronization for communications: ad hoc, per link and distributed
• Hopping speed: once per time slot
• Hopping pattern: pseudorandom
• Link level acknowledgements
• 76.8kbps data rate with effective link throughput up to 2.6 kbps (half duplex)

RS-232 internetworking port:

• 3-pin RS-232 serial port for connection to Gateway (optional)

RFID:

• Unique 32-bit identification number
• User configurable label set via Central Server web console

Power Supply

• Battery-powered with replaceable battery pack
• Battery life: typical = 3 years (depends on level of network activity), minimum = 1 year (standard warranty), maximum = 10 years (leaf nodes)
• Low-battery alarm sent to Central Server provides at least 1 week of advance notice

Physical Characteristics

• Operating temperature: -40ºC to +85ºC
• Weatherproofing: IP65
• Dimensions: 120 mm x 120 mm x 90 mm + Antenna + Connector