Railway dark territory switch automation
The invention provides a method for a railroad switch for use in un-signalized (dark) territory utilizing multiple audio messages for control and communication purposes to operate the railroad switch and relay its position to incoming trains. The messages are triggered by a programmable logic contro...
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| Hauptverfasser: | , |
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention provides a method for a railroad switch for use in un-signalized (dark) territory utilizing multiple audio messages for control and communication purposes to operate the railroad switch and relay its position to incoming trains. The messages are triggered by a programmable logic controller in conjunction with a dual tone multiple frequency signals. |
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