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Controlling device with a road condition display for an exercise bicycle

  • US 5,180,347 A
  • Filed: 07/03/1991
  • Issued: 01/19/1993
  • Est. Priority Date: 07/03/1991
  • Status: Expired due to Fees
First Claim
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1. A controlling device with a road condition display for an exercise bicycle comprising:

  • a frictional load means comprising a motor, a gear set, a first cable, a sliding piece, a second cable, a tension belt, and a resistance wheel for generating various resistances said motor is engaged to said gear set, said gear set is connected to said first cable, said first cable is connected to said sliding piece, said sliding piece is engaged to said second cable, said second cable is engaged to said resistance wheel, said motor actuating said gear set, tightening or slackening said first cable, said sliding piece, and said second cable when said motor is electrically triggered by said driving means, thereby said resistance wheel experiences increased or decreased resistance respectively;

    a picture means for providing a motion picture of different road conditions, having an indicator being displayed together with the motion picture and flashing at different frequencies in accordance with different road conditions;

    said indicator flashing in a signal-output period and not flashing in an idle period;

    said signal-output period and said idle period constituting a task cycle;

    a sensing means disposed in front of said indicator for detecting the flashing frequencies thereof and sending out pulses to a first rectifier circuit;

    said first rectifier circuit rectifying pulses from said sensing means to square pulses and coupling said square pulses to a first counter means;

    said first counter means counting up or down for each pulse during a signal-output period, and holding a counting output during a following idle period;

    said counting output being further coupled to a comparator;

    a second counter for indicating a present magnitude of a frictional load by updating a counted output thereof, whereby the tightness of the frictional load is represented by a corresponding output of said second counter, and said counted output being further coupled to a comparator;

    a comparator for comparing the outputs from said first counter and said second counter and sending out a first output for controlling said motor to forwardly rotate, a second output for controlling said motor to reversely rotate, and a fourth output and a fifth output for controlling the second counter to count up or down;

    a timing means electrically connected to said first counter and said comparator for cooperating therewith and resetting said first counter and said comparator at a first pulse of every task cycle, so that said first counter counts to a new value every task cycle and said comparator compares counted values from said first counter and said second counter;

    a driving circuit electrically coupled to the first output and the second output of said comparator and to said frictional load means to drive the motor to rotate either forwardly or reversely;

    a pulse generator electrically engaged to said frictional load means for generating at least one pulse in response to a changing resistance of said frictional load means;

    a second rectifier electrically connected to said pulse generator for rectifying the pulse therefrom to a square pulse; and

    an up-down controlling means electrically connected to said second rectifier, said comparator, and said second counter, respectively, for setting said second counter to count up or down.

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