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Voice warning system for automobiles

  • US 6,198,388 B1
  • Filed: 05/09/2000
  • Issued: 03/06/2001
  • Est. Priority Date: 05/09/2000
  • Status: Expired due to Fees
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1. A voice warning system for automobiles comprising:

  • a microprocessor, a first voice integrated circuit;

    a second voice integrated circuit;

    a power input;

    a voltage regulator;

    an engine oil indicator lamp sensing interface;

    a third stage lock sensing interface;

    a reset circuit;

    a time base oscillator;

    a mixer;

    a volume control;

    an amplifier;

    a loudspeaker;

    a quieting circuit;

    an engine speed sensor;

    an engine speed sensing interface;

    a ripple differential amplifier;

    a window comparator;

    an engine speed sensing adjustment;

    a door positive sensing interface;

    a door negative sensing interface;

    a hand brake sensing interface;

    an engine oil sensing interface;

    an engine temperature sensor;

    an high-low temperature selection;

    a gasoline sensing interface;

    a LCD module;

    a brake oil level detector;

    an engine oil mileage interface;

    an automatic transmission fluid mileage interface;

    a battery; and

    a power detector;

    whereby when a voltage of 12 V is applied to said power input, the voltage will be regulated by said voltage regulator to a voltage for supplying power to all circuits;

    when an automobile is not started, said engine oil indicator lamp sensing interface is at LOW condition and said third stage lock sensing interface is also at LOW condition;

    when the automobile is started, these two interfaces will be at HI condition and meanwhile said power input is already supplied with a voltage which is regulated by said voltage regulator to a voltage of 5V for supplying voltage to all circuits;

    when the voltage rises from 0 to 5V said reset circuit will send out a reset pulse signal to said microprocessor for resetting its condition and said time base oscillator begins to generate a time base of 3.58 MHZ and provide it to said microprocessor;

    after a time delay of 3 seconds, said microprocessor will trigger the first address voice of said first voice integrated circuit which will be converted into voice via PCM (pulse code modulation), the voice will be mixed by said mixer which is further adjusted to a desired magnitude by said volume control, and then the voice will be enlarged 40 dB by said amplifier which is then output to said loudspeaker via said quieting circuit to give a voice message “

    condition voice computer is beginning to inspect”

    ;

    said engine speed sensor is adjusted at 2000 revolutions so that the engine speed will be higher than this value when the automobile travels normally thereby making it possible to discriminate whether the automobile is stopped (engine sped below 1500 revolutions) or moving (engine speed above 2000 revolutions);

    said engine speed sensing interface picks up ripples from the power which will be enlarged 1000 times by said ripple differential amplifier and then modified by said window comparator to high pulse signal which is then transmitted to said microprocessor, a correct engine speed is obtained by proportionally subtracting a value of said engine speed sensing adjustment from the signal;

    when microprocessor finds the engine speed over 2000 revolutions, the automobile must travel normally and if the vehicle door is not closed, said door positive sensing interface is negative or said door negative sensing interface is positive and said microprocessor will immediately trigger said first voice integrated circuit to send out another warning message “

    Please close the door”

    ;

    when the automobile begins to travel, said microprocessor will first determine whether said hand brake sensing interface is at HI condition;

    if said hand brake sensing interface is at LOW condition, said microprocessor will immediately trigger said first voice integrated circuit to send out the third warning “

    Please release the hand brake”

    through said loudspeaker;

    if the engine oil is insufficient, said engine oil sensing interface will be at LOW condition and when the engine speed is higher than 0 revolution, said microprocessor will immediately send out the fourth warning “

    Insufficient engine oil”

    through said loudspeaker;

    when the engine is overheated due to excessive running or insufficient cooling water, said engine temperature sensor will pick up the overheat condition which will be transmitted to said high-low temperature selection, and if the temperature of the engine exceeds a normal value after high-low temperature comparison, a signal will be sent to said microprocessor which will trigger said second voice integrated circuit to send out the fifth warning “

    engine overheated”

    ;

    if said gasoline sensing interface is at LOW condition, this means that the gasoline is insufficient and a signal will be sent to said microprocessor which will then trigger said second voice integrated circuit to send out the sixth warning “

    insufficient gasoline”

    every five minutes through said loudspeaker;

    said microprocessor is set to send out a warning message “

    Insufficient brake oil”

    remind said driver of filling brake oil through said brake oil level detector;

    said microprocessor is set to send out a warning message “

    Please change engine oil”

    to notify the driver of changing engine oil through said engine oil mileage interface after said automobile has traveled a certain distance;

    said microprocessor is set to send out a warning message “

    Please change automatic transmission fluid”

    to inform said driver of changing automatic transmission fluid through said automatic transmission fluid mileage interface after said automobile has traveled a certain distance;

    when the voltage of said battery is found lower than 11.4V by said power detector, this means that there is something wrong with the power generating system of the automobile or said battery is not working properly and then a signal will be sent to said microprocessor which will trigger the second voice integrated circuit to send out the seventh warning message “

    Please check power generating system and belts”

    through said loudspeaker.

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