Method to authorize a head of train unit to transmit emergency commands to its associated rear unit
First Claim
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1. A method for arming a head of train unit to control emergency functions at a rear of train unit upon command over a telecommunication unit link, comprising the steps of:
- manually initiating at the head of train unit a change in pressure in the brake pressure pipe coupled between the head of train unit and the rear of train unit;
sensing at said rear of train unit said change in pressure;
transmitting from said end of train unit an indication of said change in pressure to said head of train unit;
displaying said indication of said change in pressure at said head of train unit; and
manually initiating the transmission of a predetermined signal to said end of train unit over said telecommunications link within a predetermined short time interval following the display of said pressure change.
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Abstract
An EOT emergency arming apparatus and method in which an engineer at the HOT operates a standard air brake control and responds to a resulting report of change in air pressure from the EOT within a prescribed short interval. The response is a signal which includes the EOT unique identification code, and if received within the short interval is interpreted by the EOT as if the EOT ARM switch had been activated.
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Citations
5 Claims
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1. A method for arming a head of train unit to control emergency functions at a rear of train unit upon command over a telecommunication unit link, comprising the steps of:
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manually initiating at the head of train unit a change in pressure in the brake pressure pipe coupled between the head of train unit and the rear of train unit; sensing at said rear of train unit said change in pressure; transmitting from said end of train unit an indication of said change in pressure to said head of train unit; displaying said indication of said change in pressure at said head of train unit; and manually initiating the transmission of a predetermined signal to said end of train unit over said telecommunications link within a predetermined short time interval following the display of said pressure change. - View Dependent Claims (2, 3, 4, 5)
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Specification