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vechile speed measure — Parallax Forums

vechile speed measure

ArchiverArchiver Posts: 46,084
edited 2002-11-19 03:28 in General Discussion
Hi to all,
does anybody have idea how to measure a vechile speed without outside
sensors.
Because I need to use it on several types of car and I would like to jump
over any outside instalations. I'm already have a unit with proximity sensor
and magnet wrap installed on shaft.
I need to make a continuosly speed logger with alarm when driver drive over
speed limit which is set on unit. After 10 seconds it will write a data on
chip card.
Thanks in advanced.
Damir

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2002-11-19 00:13
    Damir,
    Try using a GPS receiver that will acquire at least 4 sats and obtain a
    velocity fix. Use one of the experiment codes that have been posted for
    data loggers and just use the velocity section of the GPRMC code line from
    NEMA. just a thought for a brief discussion of NEMA look here:
    http://vancouver-webpages.com/peter/garmin65.nmea
    mike m
    Original Message
    From: Damir Petrinic <damir.petrinic@r...>
    To: <basicstamps@yahoogroups.com>
    Sent: Monday, November 18, 2002 6:10 PM
    Subject: [noparse][[/noparse]basicstamps] vechile speed measure


    > Hi to all,
    > does anybody have idea how to measure a vechile speed without outside
    > sensors.
    > Because I need to use it on several types of car and I would like to jump
    > over any outside instalations. I'm already have a unit with proximity
    sensor
    > and magnet wrap installed on shaft.
    > I need to make a continuosly speed logger with alarm when driver drive
    over
    > speed limit which is set on unit. After 10 seconds it will write a data on
    > chip card.
    > Thanks in advanced.
    > Damir
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2002-11-19 01:00
    I didn't mention in a last mail that I would not like to use a GPS.
    In that case I need to made antenna pedestal because it must be used in
    several different types of cars and trucks.
    I already have GPS Garmin 76 with NMEA 0183 sentences.

    Original Message
    From: "M. E. M. Electronics" <memelectronics@e...>
    To: <basicstamps@yahoogroups.com>
    Sent: 19. studeni 2002 01:13
    Subject: Re: [noparse][[/noparse]basicstamps] vechile speed measure


    > Damir,
    > Try using a GPS receiver that will acquire at least 4 sats and obtain a
    > velocity fix. Use one of the experiment codes that have been posted for
    > data loggers and just use the velocity section of the GPRMC code line from
    > NEMA. just a thought for a brief discussion of NEMA look here:
    > http://vancouver-webpages.com/peter/garmin65.nmea
    > mike m
    >
    Original Message
    > From: Damir Petrinic <damir.petrinic@r...>
    > To: <basicstamps@yahoogroups.com>
    > Sent: Monday, November 18, 2002 6:10 PM
    > Subject: [noparse][[/noparse]basicstamps] vechile speed measure
    >
    >
    > > Hi to all,
    > > does anybody have idea how to measure a vechile speed without outside
    > > sensors.
    > > Because I need to use it on several types of car and I would like to
    jump
    > > over any outside instalations. I'm already have a unit with proximity
    > sensor
    > > and magnet wrap installed on shaft.
    > > I need to make a continuosly speed logger with alarm when driver drive
    > over
    > > speed limit which is set on unit. After 10 seconds it will write a data
    on
    > > chip card.
    > > Thanks in advanced.
    > > Damir
    > >
    > >
    > > To UNSUBSCRIBE, just send mail to:
    > > basicstamps-unsubscribe@yahoogroups.com
    > > from the same email address that you subscribed. Text in the Subject
    and
    > Body of the message will be ignored.
    > >
    > >
    > > Your use of Yahoo! Groups is subject to
    http://docs.yahoo.com/info/terms/
    > >
    > >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2002-11-19 03:28
    pedestal is not the best. use a magnetic mount antenna if you can as the
    vehicle chassis makes a good ground plane which can be significant for good
    GPS reception
    mike m
    Original Message
    From: Damir Petrinic <damir.petrinic@r...>
    To: <basicstamps@yahoogroups.com>
    Sent: Monday, November 18, 2002 8:00 PM
    Subject: Re: [noparse][[/noparse]basicstamps] vechile speed measure


    > I didn't mention in a last mail that I would not like to use a GPS.
    > In that case I need to made antenna pedestal because it must be used in
    > several different types of cars and trucks.
    > I already have GPS Garmin 76 with NMEA 0183 sentences.
    >
    >
    >
    Original Message
    > From: "M. E. M. Electronics" <memelectronics@e...>
    > To: <basicstamps@yahoogroups.com>
    > Sent: 19. studeni 2002 01:13
    > Subject: Re: [noparse][[/noparse]basicstamps] vechile speed measure
    >
    >
    > > Damir,
    > > Try using a GPS receiver that will acquire at least 4 sats and obtain
    a
    > > velocity fix. Use one of the experiment codes that have been posted
    for
    > > data loggers and just use the velocity section of the GPRMC code line
    from
    > > NEMA. just a thought for a brief discussion of NEMA look here:
    > > http://vancouver-webpages.com/peter/garmin65.nmea
    > > mike m
    > >
    Original Message
    > > From: Damir Petrinic <damir.petrinic@r...>
    > > To: <basicstamps@yahoogroups.com>
    > > Sent: Monday, November 18, 2002 6:10 PM
    > > Subject: [noparse][[/noparse]basicstamps] vechile speed measure
    > >
    > >
    > > > Hi to all,
    > > > does anybody have idea how to measure a vechile speed without outside
    > > > sensors.
    > > > Because I need to use it on several types of car and I would like to
    > jump
    > > > over any outside instalations. I'm already have a unit with proximity
    > > sensor
    > > > and magnet wrap installed on shaft.
    > > > I need to make a continuosly speed logger with alarm when driver drive
    > > over
    > > > speed limit which is set on unit. After 10 seconds it will write a
    data
    > on
    > > > chip card.
    > > > Thanks in advanced.
    > > > Damir
    > > >
    > > >
    > > > To UNSUBSCRIBE, just send mail to:
    > > > basicstamps-unsubscribe@yahoogroups.com
    > > > from the same email address that you subscribed. Text in the Subject
    > and
    > > Body of the message will be ignored.
    > > >
    > > >
    > > > Your use of Yahoo! Groups is subject to
    > http://docs.yahoo.com/info/terms/
    > > >
    > > >
    > >
    > >
    > > To UNSUBSCRIBE, just send mail to:
    > > basicstamps-unsubscribe@yahoogroups.com
    > > from the same email address that you subscribed. Text in the Subject
    and
    > Body of the message will be ignored.
    > >
    > >
    > > Your use of Yahoo! Groups is subject to
    http://docs.yahoo.com/info/terms/
    > >
    > >
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
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