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US 12,160,279 B2Granted
Automotive physical layer (PHY) cable fault diagnosis
AssigneeMarvell Asia Pte Ltd
InventorsWensheng Sun, Shaoan Dai, Xing Wu
Life of this patent
Estimating the term…
Abstract
Methods and systems provide for using echo measurements, to detect cable faults in cables of vehicular communication networks.
Claims14
A method for fault diagnosis in one or more cables of a vehicular communication network, the method comprising:
- obtaining a return echo of a data-carrying communication signal transmitted over a cable in a vehicle;
- applying, to the return echo of the data-carrying communication signal, a computer trained model that distinguishes among a plurality of predetermined fault types in cables by analyzing a signal shape of the return echo against a plurality of signal shapes of echoes associated with the plurality of predetermined fault types, so as to identify a predetermined fault type in the cable;
- and
- initiating an action in response to the identified predetermined fault type.
1 more element
A system for diagnosing faults in one or more cables of a vehicular communication network, the fault diagnosis system comprising:
- one or more processors;
- and
- a program memory storing executable instructions that, when executed by the one or more processors, cause the system to:
- obtain a return echo of a data-carrying communication signal transmitted over a cable in a vehicle;
- apply, to the return echo of the data-carrying communication, a computer trained model that distinguishes among a plurality of predetermined fault types in cables by analyzing a signal shape of the return echo against a plurality of signal shapes of echoes associated with the plurality of predetermined fault types, so as to identify a predetermined fault type in the cable;
- and
- initiate an action in response to the identified fault type.
4 more elements
A system for diagnosing faults in a cable in an automotive or industrial network, the system comprising:
- an Ethernet physical layer (PHY) device, comprising:
- a transmitter for transmitting an outbound data-carrying Ethernet communication signal to the cable;
- a receiver for receiving an inbound Ethernet communication signal from the cable, the received inbound Ethernet communication signal comprising a return echo caused by the transmitted outbound data-carrying Ethernet communication signal;
- an echo canceller for estimating the return echo and canceling the return echo in the received inbound Ethernet communication signal;
- and
- storage media in communication with the echo canceller for storing the estimated return echo, the stored estimated return echo being available for readout externally to the Ethernet PHY device;
- and
- a processor or computer external to the Ethernet PHY device, the processor or computer configured to:
- read the estimated return echo from the storage media of the Ethernet PHY device;
- apply, to the return echo of the outbound data-carrying Ethernet communication signal, a computer trained model that distinguishes among a plurality of predetermined fault types in cables by analyzing a signal shape of the return echo against a plurality of signal shapes of echoes associated with the plurality of predetermined fault types, so as to identify a predetermined fault type in the cable;
- and
- initiate an action in response to the identified fault type.
9 more elements
Dependencies are inferred from the claim text.