RAILWAY SAFETY CRITICAL SYSTEMS WITH TASK REDUNDANCY AND ASYMMETRIC COMMUNICATIONS CAPABILITY

    公开(公告)号:US20180111634A1

    公开(公告)日:2018-04-26

    申请号:US15848811

    申请日:2017-12-20

    Abstract: A railway safety critical application system substitutes commercial off-the-shelf (COTS) hardware and/or software for railway-domain specific product components, yet is validated to conform to railway safety critical system failure-free standards. The safety critical system uses a pair of tasks executed on a controller of a COTS personal computer or within a virtual environment with asymmetric communications capability. Both tasks receive and verify safety critical systems input message data and security code integrity and separately generate output data responsive to the input message. The first task has sole capability to send complete safety critical system output messages, but only the second task has the capability of generating the output security code. A failure of any of systems hardware, software or processing capability results failure to transmit a safety critical system output message or an output message that cannot be verified by other safety critical systems.

    SYSTEM FOR COOLING POWER GENERATION SYSTEM OF A LOCOMOTIVE

    公开(公告)号:US20170267258A1

    公开(公告)日:2017-09-21

    申请号:US15073817

    申请日:2016-03-18

    CPC classification number: B61C7/00 B61C3/00 B61C17/00 B61K9/00 B61L2201/00

    Abstract: A system for cooling a power generation system of a locomotive. The power generation system includes an alternator and an engine system. The alternator is coupled to the engine system. The engine system comprises one or more components. The system includes a fan providing air flow, a first sensing module to determine a first temperature of the alternator, a second sensing module to determine a second temperature of the one or more components of the engine system, and a controller. The controller regulates the air flow based on the first temperature and the second temperature.

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