The Post Office Industries now offers the service and workshop facilities necessary for an electric vehicle programme of this particular type. They can also carry out conversion of vehicles to electric operation, and can obtain charger units and batteries. The data collecting system is microprocessor controlled and built with easy exchangeable modules. This makes the system easy to modify for different applications. The system will probably be used in other swedish projects in this field. The system consist of preamplifiers for currents and voltages, a power meter for measuring the power input to the car, a sensor giving pulses corresponding to the distance driven, two analog multiplexers, two A/D-converters, a CPU-card with a microprocessor MC 6802 with RAM and EPROM, a D/A-converter giving information of the contents of different RAM-positions, a LED-indicator giving the status of the system and a casettmemory with an EAROM. The CPU is programmed so it measures the different currents and voltages, multiplies the corresponding values and accumulates the momentary values, of power and distance. Once every 24 hour the accumulated values are transferred into a casettmemory. The casettmemory has an EAROM, that is a semiconductor memory that has the ability to keep the information intact even when power supply is cut off. That means that the casettmemory can be taken away and sent for evaluation for example once every month.


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    Titel :

    On-board computer-based data logging system for electric vehicles


    Weitere Titelangaben:

    Bordcomputer fuehrt Betriebsprotokoll in den Akku-Elektrofahrzeugen der schwedischen Post


    Beteiligte:
    Hannervall, L. (Autor:in) / Olsson, C. (Autor:in) / Ristborg, H. (Autor:in)


    Erscheinungsdatum :

    1982


    Format / Umfang :

    5 Seiten, 3 Bilder


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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