Digital module of track circuits control (DM TCC) [ Test ]
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Purpose |
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| Indication of a track circuits condition and coding of track circuits at stations and railway runs. | |||
Functions |
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Indication of free and occupancy condition of track circuits; | ||
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Indication of integrity monitoring of track circuit elements (rail fracture and rail removal) by using AFTC signals; | ||
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Generation and transmission of ALS signals to track circuits; | ||
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Self-testing with registration of failure codes; | ||
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Data exchange with signaling systems (interlocking systems, automatic line block systems) via digital or/and relay interface; | ||
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Complex protection against lightning and switching surges of DM TCC equipment with registration of number of triggering; | ||
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Data exchange with a TDM, delivering of DM TCC status information; | ||
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Protection against fall and interruption of power supply voltage; | ||
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Cables crossing and complex protection of DM TCC equipment; | ||
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Track circuits power distribution. | ||
Structure |
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Protection device of interlocking posts (PD-IP) |
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Cabinet of power lines distribution | |||
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DM TCC-TE cabinets: |
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DM TCC-RE cabinets: | |||
| » | Data exchange equipment (DEE); | » | Data exchange equipment (DEE); | |||
| » | Track circuits coding equipment (TCCE); | » | Track circuits coding equipment (TCCE); | |||
| » | Audio frequency track circuit transmitting equipment (AFTC TE); | » | Audio frequency track circuit receiving equipment (AFTC RE); | |||
Features and advantages |
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Stability of equipment against lighting and switching surges; |
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Increased reliability due to redundancy of AFTC, DCCE, DEE equipment and switching to backup channel automatically in case of failure; | |||
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High reliability of ALS signal generation due to the absence of relay switching elements in signal forming circuits; |
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Reduced cost and time of installation due to delivery of equipment as completed cabinets after full cycle of factory tests; | |||
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Exclusion of faults of a short track circuits coding due to synchronous of ALS code generators within an exploitation object; |
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Digital or/and relay interface built-in diagnostics features with signaling systems (interlocking systems, automatic line block systems). | |||
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Digital linking with signaling system via RS-422 or Ethernet interface. | |||||
Equipment of DM TCC |
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| Audio frequency track circuits transmitting equipment (AFTC TE) | Audio frequency track circuits receiving equipment (AFTC RE) |
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| Track circuits coding equipment (TCCE) | Data exchange equipment (DEE) |
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Equipment arrangement in cabinets for a typical object |
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| Example of a set contains of 12 audio frequency track circuit equipment, and track circuits coding equipment (TCCE ), and 100% redundancy. | |
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