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Emergency warning system for vehicles

  • US 6,714,127 B2
  • Filed: 04/04/2002
  • Issued: 03/30/2004
  • Est. Priority Date: 04/04/2002
  • Status: Active Grant
First Claim
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1. A severe braking warning system comprisinga. an accelerometer programmed to measure deceleration forces exerted on it by a moving first vehicle in which said system is installed and to transmit varying output signals correlating to said deceleration forces;

  • b. a microprocessor electrically connected to said accelerometer, said microprocessor programmed to monitor said varying output signals from said accelerometer;

    c. a compass module electrically connected to said microprocessor and configured to detect a magnetic orientation of said first vehicle and transmit to said microprocessor an output signal corresponding to said magnetic orientation;

    d. a radio frequency transceiver electrically connected to said microprocessor, said transceiver designed to transmit radio frequency signals to a second transceiver of a second braking warning system upon activation by said microprocessor, said transmitted radio frequency signals corresponding to said deceleration forces exerted on said first vehicle and corresponding to said magnetic orientation of said first vehicle;

    e. said radio frequency transceiver further designed to receive radio frequency signals from a severe braking warning system installed in a second vehicle, said received radio frequency signals corresponding to a deceleration level and magnetic orientation of said second vehicle;

    f. an alerting device electrically connected to said microprocessor, said alerting device is configured to convey visual or auditory alerts within said first vehicle upon activation by said microprocessor;

    g. said microprocessor programmed to compare said received signals from said transceiver to said first vehicle'"'"'s magnetic orientation to determine whether said second vehicle'"'"'s orientation is within a pre-programmed angular range with respect to said first vehicle'"'"'s orientation, whereby when said second vehicle is within said angular range, said microprocessor is programmed to activate said aural indicator to transmit said auditory alerts within said first vehicle; and

    h. said microprocessor is further programmed to ignore said received signals from said transceiver when said first vehicle is traveling at a deceleration rate corresponding to a pre-programmed deceleration rate value.

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