Trainline controller electronics
First Claim
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1. A method of testing signal quality for each node in a wire network on a train comprising:
- commanding each node to be in a receiving mode;
commanding each node, one at a time, to transmit a calibration signal; and
determine the quality of the calibration signal as a function of the length of the transmission path on the wire.
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Abstract
Trainline controller including testing of signal quality on a trainline network by commanding each node to transmitter calibration signal. A signal detector is connected to the trainline at a common junction with a head end termination circuit. A stuck-on transmitter is determined by a transmission current drawn by the transceiver is on for a present amount of time.
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Citations
14 Claims
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1. A method of testing signal quality for each node in a wire network on a train comprising:
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commanding each node to be in a receiving mode; commanding each node, one at a time, to transmit a calibration signal; and determine the quality of the calibration signal as a function of the length of the transmission path on the wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A trainline communication controller on a locomotive and in a wired network with nodes on cars of the train, the controller comprising:
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a transceiver connected to a trainline; a signal detector, connected to the trainline; a head end termination circuit connected to the trainline at a common junction with the signal detector; and a control connected to the transceiver and signal detector. - View Dependent Claims (12, 13, 14)
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Specification