LEAKY FEEDER MCA1000 DIGITAL FOR COAL AND HARD ROCK MINES, METROS AND LIGHT TRAINS

Ex I M1, Ex ia/ib I ma

The System MCA1000 Digital is one of the most professional leaky feeder systems specially designed for classified dangerous zones with Atex Certification Ex I M1, Ex ia/ib I for underground Coal Mines and also for highly productive hard rock mines with critical operation. The system has inteligent amplifiers that support redundancy ring to gurantee the operation for more than 8 hours in case of cable cut off or power outages. • The system provides 1024 digital VHF voice and data channels • Messages text between digital radios • Compatible with old version analog vhf radios • Remote wireless monitoring underground Diesel and cable driven

monorails and railways. • Scada Automation tasks for underground mine. • Valuable assets tracking inside and outside underground mine.

LEAKY FEEDER MCA1000 DIGITAL

BRANCH AMP POWER COUPLER TERM 350m 500m

AMP

POWER SUPPLY

TTR100 DIGITAL RADIO

TTR51 ANALOG RADIO

TERM Ex I M1, Ex ia/ib I ma

Túnel

LEAKY FEEDER MCA1000 DIGITAL

COMMUNICATION RACK

• Hub and converter RF signals containing 1024 voice/data digital channels.

• Provide a conection with the PBX, the control room surveillance system and the Argus tracking system.

• Battery backup.

• 4 Intrinsically safe output ports

INTRINSICALLY SAFE LINE AMPLIFIER

• Powered from de leaky feeder cable 350m or 500m spacing, two way RF signal distribution.

• Equiped with Automatic Gain Control, Line Level Compensation and Driver by diagnostic functions.

• Internal battery backup ensuring minimun 8 hours operations in case of power outage if it is installed a redundancy ring.

TTR100 IS DIGITAL RADIO Ex I M1, Ex ia /ib I ma

HEADEND. The DMR digital signal combiner MCA1000 Digital is the most advanced on the market. The meters provide maintenance personnel with information about the current consumption, the supply voltage and the RF gain of the system with a simple glance at the head.

SIGNAL COMBINER AND AMPLIFIER

AMPLIFIER. Intelligent bidirectional amplifier has local and remote diagnostics parameters such as line voltage, current consumption and downlink and upstream signal attenuation, but it has the intelligence of sensing a cable cut and using digital IP roaming to continue to operate By the redundancy ring. It has a manual attenuation circuit by means of dip switches so that the user can adjust the amplifier without it deteriorating to compensate the short cable lengths with excessive gain. It also has another automatic RF attenuation circuit that is used for both directions in conjunction with the AGC automatic gain control circuit to adjust the size of the RF signal to ensure that the signal remains within the optimum use window.

REMOTE MONITORING

MOBILE RADIO MODEM. The remote monitoring of locomotives allows scheduling preventive and corrective maintenance of faults that could be very expensive. The mobile readiomodem provides digital data exchange in VHF bandwidth between underground Diesel and cable driven monorails and railways with the MCA1000 radio base station Data exchange between the locomotive and the PRM-VHF mobile radio modem is carried out via the RS485 interface. Channel frequencies are programmable. PRM-VHF mobile radio modem is powered up with 11-16 VDC from a IS stabilized PSU located on the locomotive

SUSPENDED MONORAIL LOCOMOTIVE CABLE DRIVEN RAILWAY

REMOTE LOCOMOTIVE DIAGNOSTIC MOBILE RADIOMODEM VHF-PRM

Tunnel

LEAKY FEEDER MCA1000 DIGITAL

Radiocommunication operates in line of sight in the surface but underground mines need a Leaky feeder or radiating coaxial cable to avoid communication looses in tunnel curves, so the cable has been especially designed with a poor quality shield, to allow RF signals to leak out evenly along its length. For this reason Leaky feeder cable has higher losses than normal coaxial cable and as the RF signal passes along the cable, the signal gets weaker and weaker

So the signal must be regenerated at some fixed intervals. For this end, the most cost effective method is to install bidirectional booster amplifiers every 350 or 500 meters and amplify the RF signals along the cable.

MC

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BA

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TIO

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350m 500m

350m 500m

Radio communication with TDMA (Time Division Multiple Access) technology greatly improves spectrum efficiency because it doubles the number of channels available against traditional analog FDMA systems. This results in high-quality, noise-free and reliable communication. Compared to analogue technology, DMR digital audio compression provides better noise filtering and excellent reception quality over a larger area, which is of particular importance at the edge of the range and in very noisy environments. This is achieved through the use of a narrowband codec and a digital error correction.

LEAKY FEEDER MCA1000 DIGITAL

REDUNDANCE RING. The System MCA1000 Digital has intelligent digital amplifiers that sense the exact point when radiant coaxial cable is accidentally cut and continue the operations with both cable segments cut with digital roaming throgh redundancy ring in the surface with microwave or fiber optic cable. This guarantees the continuity of the operation for more than 8 hours in cases of cable cuts or a power failure, for mines with critical operation giving time to react to locate the point of failure and to perform the repair.

LEAKY FEEDER MCA1000 DIGITAL (Redundancy Ring)

Repeater

Leaky Feeder Cable

Radio 1

Radio 2

Radio 3

F1

F1

Wireless Link or Fiber Optic Cable

REDUNDANCY RING

Repeater

Repeater

AMP

AMP

AMP

AMP

AMP

SCADA MINING AUTOMATION

SCADA MINING AUTOMATION. Fixed radiomodem provides digital data exchange between devices serves as a IS separator between the MCA-1000 leaky feeder system and devices equipped with the RS485 interface Wireless 6 I/0 radios can be used to automate undeground mining tasks like ventilation and water pumps, etc.

• MESSAGES. Send individual, group and emergency text messages via digital radios.

• TRACKING. Tracking valuable assets in or out of gold mines, diamonds, silver, or to have a higher safety.

• REMOTE DIAGNOSTIC. Thanks to the redundancy ring the system can remotely monitor and diagnose the whole network, to locate quickly and accurately where the damaged cable or amplifier is located.

• SCALES. Wireless remote weighing undeground or surface of gold, silver mines, etc. . With on board truck scales to control and monitor the weighing and total production of undergroun mine in real time.

APPLICATIONS FOR UNDERGROUND MINE MANAGEMENT

Technowired USA. 3783 Spanish Fine St. Sarasota, Florida 34238 USA Tel. +1-941-893-2696 Email: info@technowired.net

Technowired México Lago de Chapala 123 Col. Roma C.P. 64700 Monterrey, Nuevo Leon, Mexico Tel : +5281-1234-3030 Email: info@technowired.net

OTHER CONFINED SPACES APPLICATIONS

RAILROADS AND METROS

HYDROELECTRIC TUNNEL VEHICLE TUNNEL

UNDERGROUND MINING

DEEP SEWER AND AQUEDUCTS TBM TUNNELING MACHINE