The paper presents a cycle timer which enables the accurate following and repetition of SAE driving schedules of stop and go cycles, for electric vehicles, by reducing the human factor. The system which consists of a programmable read-only memory (PROM) stores each of these cycles, which are detailed, on its own plug-in card. The actual vehicle speed, and the PROM indicated desired speed are displayed on a dual scale meter allowing the driver to match them. A speed change is preceded by a half second buzzer warning and a new cycle by a one second warning. The PROM controls the recycle start time as well as the buzzer activation. A 5 volt regulator providing logic power, and a 12 volt dc-dc converter providing analog and memory power are described.


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    Title :

    A cycle timer for testing electric vehicles


    Contributors:

    Conference:

    Electric Vehicle Council, International Electric Vehicle Symposium ; 1978 ; Philadelphia, PA


    Publication date :

    1978-10-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English






    A Cycle Timer for Testing Electric Vehicles

    Soltis,R.F. / NASA Lewis Res.Cent.,US | Automotive engineering | 1978



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