Method and system providing sleep and wake-up modes for railway track circuit unit
First Claim
1. A method of providing a sleep mode and a wake-up mode for a plurality of railway track circuit units, said method comprising:
- adapting one of said track circuit units to communicate in a first direction to a first track circuit unit and in a different second direction to a different second track circuit unit;
employing a plurality of wireless messages between a train and a plurality of wayside units operatively associated with at least some of said track circuit units;
including with said wireless messages a first identifier of a corresponding one of said track circuit units and a second identifier of a direction of travel of said train;
receiving one of said wireless messages at one of said wayside units corresponding to said one of said track circuit units based upon said first identifier and responsively entering the wake-up mode from the sleep mode of said one of said track circuit units; and
responsively outputting based upon said second identifier from said one of said track circuit units a signal in the first direction to said first track circuit unit or in the different second direction to said different second track circuit unit.
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Accused Products
Abstract
A method provides sleep and wake-up modes for railway track circuit units. An intermediate track circuit unit communicates in a first direction to a first unit and in a different second direction to a different second unit. A plurality of wireless messages are employed between a train and a plurality of wayside units operatively associated with some of the track circuit units. Included with the wireless messages are a first identifier of a corresponding one of the track circuit units and a second identifier of a direction of travel of the train. One of the wireless messages is received at one of the wayside units corresponding to the intermediate unit based upon the first identifier. A signal is responsively output based upon the second identifier from the intermediate unit in the first direction to the first unit or in the different second direction to the different second unit.
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Citations
32 Claims
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1. A method of providing a sleep mode and a wake-up mode for a plurality of railway track circuit units, said method comprising:
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adapting one of said track circuit units to communicate in a first direction to a first track circuit unit and in a different second direction to a different second track circuit unit;
employing a plurality of wireless messages between a train and a plurality of wayside units operatively associated with at least some of said track circuit units;
including with said wireless messages a first identifier of a corresponding one of said track circuit units and a second identifier of a direction of travel of said train;
receiving one of said wireless messages at one of said wayside units corresponding to said one of said track circuit units based upon said first identifier and responsively entering the wake-up mode from the sleep mode of said one of said track circuit units; and
responsively outputting based upon said second identifier from said one of said track circuit units a signal in the first direction to said first track circuit unit or in the different second direction to said different second track circuit unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A railway system for a train including a wireless transmitter, said railway system comprising:
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a plurality of railway track circuit units, one of said track circuit units being adapted to communicate in a first direction to a first one of said track circuit units and in a different second direction to a different second one of said track circuit units, each of said track circuit units including a power supply having a control input; and
a plurality of wayside units operatively associated with said track circuit units, each of said wayside units including a control circuit, a wireless receiver and a wireless transmitter, said wireless receiver being adapted to receive a plurality of wireless messages from the wireless transmitter of said train, each of said wireless messages including a first identifier of a corresponding one of said track circuit units and a second identifier of a direction of travel of said train, said control circuit being adapted to respond to receipt of one of said wireless messages and set the control input of a corresponding one of said track circuit units, in order to enable the power supply thereof and enter a wake-up mode thereof, wherein one of said wayside units is adapted to receive one of said wireless messages corresponding to one of said track circuit units based upon said first identifier and to responsively enable output based upon said second identifier from said one of said track circuit units a signal in the first direction to said first track circuit unit or in the different second direction to said different second track circuit unit. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification